Block: 282057 / Tokenview Block Explorer

Summary

Block Height 282057

Time 10/16/2020 09:53:24

Size 0 Bytes

Transaction Fees 2.48124000 SC

Confirmations -274019

Total Amounts 1208285.33584080... SC

Mining Difficulty 37178517834917109590

Transaction Counts 139

Block Reward 30002.48124 SC

Hashes

 9253.594752452886280... SC

9253.594752452886280199790677 SC

Hash: 96303c009884f15d34616a00b6fd28c3fc28287032d02a21be35e8021a097a77
961fffb7a0e717431436ed930a041a4ed5... - 9253.59475245



d4266547f3c59c90399e16a5b8f952379a... + 0.03864000
1058599c32999642c74f6a73fae49254e4... + 9253.55611245

Fee + 0.00000000

Confirmations: 1

Type Transfer
 0.03864 SC

0.03864 SC

Hash: 73990aaf3aa8e9c7016c3902e8d1fb19fe860146e8c38805d87a9e2127758f3e
d4266547f3c59c90399e16a5b8f952379a... - 0.03864000



92b5742eb24ddb9dc7d83a70ccadb8d53a... + 0.00000000
b9c9a199e358b44290382460b7d6f2b9ef... + 0.00000000

Fee + 0.03864000

Confirmations: 1

Type File Contract Revision Contract: {"parentid": "92b5742eb24ddb9dc7d83a70ccadb8d53a052e6fee021b2b94460cee07db5f2f", "unlockconditions": {"timelock": 0, "publickeys": [{"algorithm": "ed25519", "key": "ax6OCMv8vkjPiM9muuv3fuA/yKayN173HRzyd8EfRiA="}, {"algorithm": "ed25519", "key": "N5Kbtb+BA2HlaFsqznaeG+atJ9Kmubk2o6KY7Ykippo="}], "signaturesrequired": 2}, "newrevisionnumber": 18446744073709551615, "newfilesize": 0, "newfilemerkleroot": "0000000000000000000000000000000000000000000000000000000000000000", "newwindowstart": 282200, "newwindowend": 282344, "newvalidproofoutputs": [{"value": "489348702132026417999709", "unlockhash": "ce3e8bb91f15a6febed21f79284b0f05d58d64d1a11d8352bdeb78d2fdca90830e664e30c490"}, {"value": "1930795133550313499480764", "unlockhash": "04b83e1514667626b108b8061e5968df06e0f3cb58e303530d1c3e222460d4929e905aa23d58"}], "newmissedproofoutputs": [{"value": "489348702132026417999709", "unlockhash": "ce3e8bb91f15a6febed21f79284b0f05d58d64d1a11d8352bdeb78d2fdca90830e664e30c490"}, {"value": "1930795133550313499480764", "unlockhash": "04b83e1514667626b108b8061e5968df06e0f3cb58e303530d1c3e222460d4929e905aa23d58"}], "newunlockhash": "b9c9a199e358b44290382460b7d6f2b9ef1c608c3d9377dccaaf08e16ac55368b29504932b4a"};
 0.03858 SC

0.03858 SC

Hash: 3ecf0d716338abd9b29801571057d18bf5f19117b48556c6ab1ee7fb0f70d561
5250a65fc296c832157c935eede7d14d42... - 0.03858000



e5e6f44d0c583f4a499faf942905f0e919... + 0.00000000
42e5aabaea4574ae88cf18048208c06908... + 0.00000000

Fee + 0.03858000

Confirmations: 1

Type File Contract Revision Contract: {"parentid": "e5e6f44d0c583f4a499faf942905f0e9196af7521aa7273e361854d2b26b0c14", "unlockconditions": {"timelock": 0, "publickeys": [{"algorithm": "ed25519", "key": "zrDVaUD5CyWtHs3lgJ9TNLFQuTyBfn5gs2QLIvrHblU="}, {"algorithm": "ed25519", "key": "V9vAjXrEj1g/X9zwPkmHnTPfq2bus3krW1YRm+qWCzI="}], "signaturesrequired": 2}, "newrevisionnumber": 18446744073709551615, "newfilesize": 0, "newfilemerkleroot": "0000000000000000000000000000000000000000000000000000000000000000", "newwindowstart": 282200, "newwindowend": 282344, "newvalidproofoutputs": [{"value": "471903485981919605774780", "unlockhash": "aaee1c3239ff9f23daa6cc865e28ca3e5ae7d514390bb3f0483261ff99f922e2aa84da6169a0"}, {"value": "878940470510852253149836", "unlockhash": "37731b22c6d3a4d3544f5199259d38f01d29c0773517bbb06e8bac1ede24747f4f273e6971c5"}], "newmissedproofoutputs": [{"value": "471903485981919605774780", "unlockhash": "aaee1c3239ff9f23daa6cc865e28ca3e5ae7d514390bb3f0483261ff99f922e2aa84da6169a0"}, {"value": "878940470510852253149836", "unlockhash": "37731b22c6d3a4d3544f5199259d38f01d29c0773517bbb06e8bac1ede24747f4f273e6971c5"}], "newunlockhash": "42e5aabaea4574ae88cf18048208c069081861e46c3dd1dff8b6b642b304a96dc91292bbebd7"};
 219.1105912495674628... SC

219.110591249567462890328195 SC

Hash: 44d1363cf00aa715f3c97b229a1e24123861273df80c5997b034f750a4b56573
42a076784174e475cfa62801e3250bd692... - 219.11059125



5871fd77ad231545f94dd7d83b910b6f17... + 0.04011000
7f42f155426b0aa5d75d90b24ba1a10b93... + 219.07048125

Fee + 0.00000000

Confirmations: 1

Type Transfer
 0.04011 SC

0.04011 SC

Hash: 33ccf425d02d535effe0fadfcd5f9f72c5e7456b589cb5fff08766f975bed28d
5871fd77ad231545f94dd7d83b910b6f17... - 0.04011000



04b9c9297f5a976efe141e5ee8f9e6fc17... + 0.00000000
58b9355a9cbc16e622b693c0a09e8c9020... + 0.00000000

Fee + 0.04011000

Confirmations: 1

Type File Contract Revision Contract: {"parentid": "04b9c9297f5a976efe141e5ee8f9e6fc17013a9c5ee2bfee418a99c2a10bf21b", "unlockconditions": {"timelock": 0, "publickeys": [{"algorithm": "ed25519", "key": "CMgy60FOFIoGsBAViS7L3FvCCiGhGGu1fyfMzytVw3Y="}, {"algorithm": "ed25519", "key": "LL4pBly4rBRfU0v694n9BG94pia+Xmu2lmvyqsQWCbs="}], "signaturesrequired": 2}, "newrevisionnumber": 918, "newfilesize": 5557452800, "newfilemerkleroot": "38a937dc18374512f126cb44df7e919e586dc05237789a0d2fde73a9a5c9349b", "newwindowstart": 282200, "newwindowend": 282344, "newvalidproofoutputs": [{"value": "987997893823855870231857", "unlockhash": "c09654f50f0d30863c77cb1ddf42627d00772f020a4fc16771484f6251abccfcf72274b1e0b2"}, {"value": "1550696898136435783303955", "unlockhash": "a6eeffc50917a983f0a960db9dbe6fc1a30e1fd5e5c67061e8aaf4dbf5b0f2b2bde41949860e"}], "newmissedproofoutputs": [{"value": "987997893823855870231857", "unlockhash": "c09654f50f0d30863c77cb1ddf42627d00772f020a4fc16771484f6251abccfcf72274b1e0b2"}, {"value": "878294759831931697019176", "unlockhash": "a6eeffc50917a983f0a960db9dbe6fc1a30e1fd5e5c67061e8aaf4dbf5b0f2b2bde41949860e"}, {"value": "672402138304504086284779", "unlockhash": "000000000000000000000000000000000000000000000000000000000000000089eb0d6a8a69"}], "newunlockhash": "58b9355a9cbc16e622b693c0a09e8c9020806b055ad4432102528c04633390d281c7981e11b4"};
 374.3344903480060116... SC

374.334490348006011648417734 SC

Hash: 89915a4ccd6827318a7a7d890085089cf6111f85fcd0973d9e74a90bbd986c5c
b28a3aeaf2b46ada8c37dd4ae7972218be... - 374.33449035



93aadbb5a38d4f19efc79db51ef45afac3... + 0.03852000
3422431269338eb629f326daa0b70c4745... + 374.29597035

Fee + 0.00000000

Confirmations: 1

Type Transfer
 0.03852 SC

0.03852 SC

Hash: 70a4a28276431218153275e8a26e9ec0c8051b854f998c71179c627916148916
93aadbb5a38d4f19efc79db51ef45afac3... - 0.03852000



0a4b38e0034b980b062eb05c27e58f1980... + 0.00000000
f5884586de6c15d2a52fc38a1641c7a931... + 0.00000000

Fee + 0.03852000

Confirmations: 1

Type File Contract Revision Contract: {"parentid": "0a4b38e0034b980b062eb05c27e58f19802e172104d2c7ac546cfc3a5df25cc4", "unlockconditions": {"timelock": 0, "publickeys": [{"algorithm": "ed25519", "key": "bdlbefWtsv20vTKM/NrwqjzVsr28KKLMSZYCigIwGuA="}, {"algorithm": "ed25519", "key": "S4BEWAcUS7Hynmgdv/E35knkSONHEkTrXAmEn29nfj8="}], "signaturesrequired": 2}, "newrevisionnumber": 18446744073709551615, "newfilesize": 0, "newfilemerkleroot": "0000000000000000000000000000000000000000000000000000000000000000", "newwindowstart": 282200, "newwindowend": 282344, "newvalidproofoutputs": [{"value": "58372451395874738271", "unlockhash": "22fcd56ca1c27407563fe0406c2592e7c7d99ff7d733d75c2da0a0386890d92dc198a23889a3"}, {"value": "1150230870348602274107809", "unlockhash": "e5e4f181abdc4d0594a490104763867f6cbda3a1a079471244148069aee199336e30ae818bfa"}], "newmissedproofoutputs": [{"value": "58372451395874738271", "unlockhash": "22fcd56ca1c27407563fe0406c2592e7c7d99ff7d733d75c2da0a0386890d92dc198a23889a3"}, {"value": "1150230870348602274107809", "unlockhash": "e5e4f181abdc4d0594a490104763867f6cbda3a1a079471244148069aee199336e30ae818bfa"}], "newunlockhash": "f5884586de6c15d2a52fc38a1641c7a931b12a84a4535fbc3281fe4744cdb4adc0a85bf1c55a"};
 5093.784703645827525... SC

5093.78470364582752556127091 SC

Hash: 607df5b6872d0460118122b3407c303a2288c001d41f5403d6ec41de01778e77
7e6275a076c3a113d86010b4032377dee4... - 5093.78470365



bc3988be5172a1ec468d5fb09ac61686a1... + 0.03864000
fa158d96a943ea2db8f21d9f98e7a2b08b... + 5093.74606365

Fee + 0.00000000

Confirmations: 1

Type Transfer
 0.03864 SC

0.03864 SC

Hash: eb54b861b697bcc69c8d35a3b6be55b1188f04a9dafc563a62c2cf8f1db0fae4
bc3988be5172a1ec468d5fb09ac61686a1... - 0.03864000



b632aa67c3a2b1e24f6aeaf0c2fb407038... + 0.00000000
7b942226678354e14118c1ddb530e8897b... + 0.00000000

Fee + 0.03864000

Confirmations: 1

Type File Contract Revision Contract: {"parentid": "b632aa67c3a2b1e24f6aeaf0c2fb40703845681f6bbcd9d1aba6c8597e04e2fd", "unlockconditions": {"timelock": 0, "publickeys": [{"algorithm": "ed25519", "key": "cG0QxfAF7hJK9sxcSHaYMMK882PZ7XbhQC0278xP0Q0="}, {"algorithm": "ed25519", "key": "j3AexfVknbr52Ab8BmWCpapqIJNjTTj0eWXX2z2Dm2w="}], "signaturesrequired": 2}, "newrevisionnumber": 18446744073709551615, "newfilesize": 0, "newfilemerkleroot": "0000000000000000000000000000000000000000000000000000000000000000", "newwindowstart": 282200, "newwindowend": 282344, "newvalidproofoutputs": [{"value": "53944293832105347986112", "unlockhash": "acc312925a3a05a9c3cd30901ebad939a6084a8a9df50b1554d2516e7abc2fe6067a91ff0345"}, {"value": "1422817105005218649754702", "unlockhash": "d8b2f7394fb70e8a163cda86ef946b5c62c222d753b31da8c27701fa66a258c1653dca9d92fb"}], "newmissedproofoutputs": [{"value": "53944293832105347986112", "unlockhash": "acc312925a3a05a9c3cd30901ebad939a6084a8a9df50b1554d2516e7abc2fe6067a91ff0345"}, {"value": "1422817105005218649754702", "unlockhash": "d8b2f7394fb70e8a163cda86ef946b5c62c222d753b31da8c27701fa66a258c1653dca9d92fb"}], "newunlockhash": "7b942226678354e14118c1ddb530e8897bf4db3d3e9ba4030ccf6b55925c569aa74d7cd072e3"};
 5093.746063645827525... SC

5093.74606364582752556127091 SC

Hash: f0becc90dbdc32a5f5e31b75cc30ead15af47200a0f869b073a13243a8e996f4
fa158d96a943ea2db8f21d9f98e7a2b08b... - 5093.74606365



356985edbde2f5d2e60c8cdf439cfb6f69... + 0.03858000
4f3b53e1456dc4a122e4df0589017ba45b... + 5093.70748365

Fee + 0.00000000

Confirmations: 1

Type Transfer
 0.03858 SC

0.03858 SC

Hash: 2e553bdb889f54b6d4814f04e61436afbee00ee8a1a03235ac2512b16b9043db
356985edbde2f5d2e60c8cdf439cfb6f69... - 0.03858000



135717cbb815cad917df62a953f1bffa74... + 0.00000000
8a33efec53f1213546826e11e18c3c90f3... + 0.00000000

Fee + 0.03858000

Confirmations: 1

Type File Contract Revision Contract: {"parentid": "135717cbb815cad917df62a953f1bffa749cee87bfbdfcef88041c13c122b782", "unlockconditions": {"timelock": 0, "publickeys": [{"algorithm": "ed25519", "key": "sOZ5Vw6sB7lqNoPIUaoqm8GG3Ky2kpPE2UfOdHkNrsA="}, {"algorithm": "ed25519", "key": "j3AexfVknbr52Ab8BmWCpapqIJNjTTj0eWXX2z2Dm2w="}], "signaturesrequired": 2}, "newrevisionnumber": 18446744073709551615, "newfilesize": 0, "newfilemerkleroot": "0000000000000000000000000000000000000000000000000000000000000000", "newwindowstart": 282200, "newwindowend": 282344, "newvalidproofoutputs": [{"value": "452464931839801946496352", "unlockhash": "9f3d75a2378bbc5edbd18fd083e7191ee74d1052d40c470dca712e0f876ae910d825333ac535"}, {"value": "1003206982197596286230958", "unlockhash": "d8b2f7394fb70e8a163cda86ef946b5c62c222d753b31da8c27701fa66a258c1653dca9d92fb"}], "newmissedproofoutputs": [{"value": "452464931839801946496352", "unlockhash": "9f3d75a2378bbc5edbd18fd083e7191ee74d1052d40c470dca712e0f876ae910d825333ac535"}, {"value": "1003206982197596286230958", "unlockhash": "d8b2f7394fb70e8a163cda86ef946b5c62c222d753b31da8c27701fa66a258c1653dca9d92fb"}], "newunlockhash": "8a33efec53f1213546826e11e18c3c90f3192cddee36364279e71238a100cd864ace6f1e52db"};
 1301.329733070642404... SC

1301.329733070642404121651403 SC

Hash: b09fac7cb941bd412d7cddc002bcc296248ce35f6b1cc66ead0133fb9eab3b22
dbae73989867ead8576d136d5b87da358a... - 1301.32973307



9aca4cfceae5d897b2de41830954012707... + 0.03864000
e429a6a9c693a973db1229b24b7e7a26f6... + 1301.29109307

Fee + 0.00000000

Confirmations: 1

Type Transfer
 0 SC

0 SC

Hash: b1d00c6236f0e1d2ccfc9a7d6c6fd5873eac684568480340a5d3166b277e506f


Fee + 0.00000000

Confirmations: 1

Type Blank
 39735.96770169717501... SC

39735.967701697175017766694575 SC

Hash: 1aa94c21555847f9920af229a5313c8b2f242ea6c052e1a4eb2a8bca5df292fe
cd10717a4ea37957672c1c4ab9db02f0fa... - 39735.96770170



a7910418d0017cc25b11e4e0fa20287242... + 0.04008000
10996c34de4678bc7cb26bdb5428e8dc76... + 39735.92762170

Fee + 0.00000000

Confirmations: 1

Type Transfer
 0.04008 SC

0.04008 SC

Hash: 3f6e1d4ca9881518786179e8cb336dd767952c6543526d6834b2d5885a50ecca
a7910418d0017cc25b11e4e0fa20287242... - 0.04008000



c277a3afbcbc56b771dc99b2b366f91e24... + 0.00000000
5a3506e73f4ca110113a7b019430b5b64a... + 0.00000000

Fee + 0.04008000

Confirmations: 1

Type File Contract Revision Contract: {"parentid": "c277a3afbcbc56b771dc99b2b366f91e243a1d06c287a2ff1a2a4c3972804da4", "unlockconditions": {"timelock": 0, "publickeys": [{"algorithm": "ed25519", "key": "IMVF0tt/pY5bOvWN121/t8HyuCbR8dCKRKcFT9o3Ll4="}, {"algorithm": "ed25519", "key": "WxjXHQhY4/5pQTH9h/BZ63FUxcf24eArDtlRVHZ1iqo="}], "signaturesrequired": 2}, "newrevisionnumber": 12, "newfilesize": 41943040, "newfilemerkleroot": "8e62b95948757026b867861ddfeb3bcc7c07a2241bcbe75f87fbb1bd9985de77", "newwindowstart": 282200, "newwindowend": 282344, "newvalidproofoutputs": [{"value": "1099746782777991605614380", "unlockhash": "adb32c7d68b63d743b89e5d6ac010f72bebf136f34ca0c015145c9a4274c2c93d24cb84b5ddf"}, {"value": "545368094105134938009684", "unlockhash": "40dcd15405cbd643d4916a21d4be5962320a28a4070f81a7b63742222b5465a6284e0aa21ec6"}], "newmissedproofoutputs": [{"value": "1099746782777991605614380", "unlockhash": "adb32c7d68b63d743b89e5d6ac010f72bebf136f34ca0c015145c9a4274c2c93d24cb84b5ddf"}, {"value": "425943096870535449311934", "unlockhash": "40dcd15405cbd643d4916a21d4be5962320a28a4070f81a7b63742222b5465a6284e0aa21ec6"}, {"value": "119424997234599488697750", "unlockhash": "000000000000000000000000000000000000000000000000000000000000000089eb0d6a8a69"}], "newunlockhash": "5a3506e73f4ca110113a7b019430b5b64ac40e720d712914a049066e5b29d36d78e697467504"};
 965.8296380108951531... SC

965.829638010895153176745752 SC

Hash: d0eadbafa312ab3bf130b07571edb2316ed28bd2d6a278782a26673ce7163357
77d87bf2190369874053c78b15dcd9e8d6... - 965.82963801



19e275f78d1294a847da59766ef611232e... + 0.04011000
52d7d79d2749c359373d044dfb43a7fb34... + 965.78952801

Fee + 0.00000000

Confirmations: 1

Type Transfer
 0.04011 SC

0.04011 SC

Hash: 38e857899be484729204506d85455f6d91a5561121635bdd14a61b289ecebaea
19e275f78d1294a847da59766ef611232e... - 0.04011000



ee7b7c18efca1601fef317197a9f38885a... + 0.00000000
fa849a47da7eea316b8861696abc2de3cb... + 0.00000000

Fee + 0.04011000

Confirmations: 1

Type File Contract Revision Contract: {"parentid": "ee7b7c18efca1601fef317197a9f38885a97a536b9a05ff0eb3dd01cb995e705", "unlockconditions": {"timelock": 0, "publickeys": [{"algorithm": "ed25519", "key": "VeXoFEx9YYlkT7kKo5V/m556T4Ciioh0rDWqFP0jgCM="}, {"algorithm": "ed25519", "key": "Db2ROxmZYcyYQzRXRNM7mBdIyTKtLPmHLIYs75M4as0="}], "signaturesrequired": 2}, "newrevisionnumber": 959, "newfilesize": 5674893312, "newfilemerkleroot": "ded37790a17c41546e60c8ad7e0306b1e8cad62788c80514bdde6d8719915d1a", "newwindowstart": 282200, "newwindowend": 282344, "newvalidproofoutputs": [{"value": "1024378453015777182764708", "unlockhash": "399566d85612413f75152f1f735da5fb2a4931e8f5b8c3178638af3815e2607502e4d8b87046"}, {"value": "1465653691723968951961526", "unlockhash": "647256b484569c3a60ac99efeaef21a3a263d51d0509527653b01b87ef01cee6572f879d9dad"}], "newmissedproofoutputs": [{"value": "1024378453015777182764708", "unlockhash": "399566d85612413f75152f1f735da5fb2a4931e8f5b8c3178638af3815e2607502e4d8b87046"}, {"value": "902408320171786485146975", "unlockhash": "647256b484569c3a60ac99efeaef21a3a263d51d0509527653b01b87ef01cee6572f879d9dad"}, {"value": "563245371552182466814551", "unlockhash": "000000000000000000000000000000000000000000000000000000000000000089eb0d6a8a69"}], "newunlockhash": "fa849a47da7eea316b8861696abc2de3cb0c64c692c8075c1ce7ed52ea89c233da3169d044c7"};
 1844.581086059525902... SC

1844.581086059525902188547568 SC

Hash: 44b633921d4bddf1b73a3740cd578c8c4a844c636c515c8c4090713b281fde6e
7b5abfef922408152c8b7e9dd053482eee... - 1844.58108606



9ba176788091e02171ceabe51cfbddb32c... + 0.03858000
80fb26b07f086bff2bd39d2db25c4c25cf... + 1844.54250606

Fee + 0.00000000

Confirmations: 1

Type Transfer
 0.03858 SC

0.03858 SC

Hash: 2cb577b4189ec0d24337d1b9187a9c5e565a6d129fd39e5118d175ff71d2b4bf
9ba176788091e02171ceabe51cfbddb32c... - 0.03858000



c3b525417e694a38a2b83647d68a4fe35f... + 0.00000000
8ede9c844e43536a4e3399de8ded45ad5c... + 0.00000000

Fee + 0.03858000

Confirmations: 1

Type File Contract Revision Contract: {"parentid": "c3b525417e694a38a2b83647d68a4fe35f6cd439b2832ac7495105eec92458bc", "unlockconditions": {"timelock": 0, "publickeys": [{"algorithm": "ed25519", "key": "FJc9ftGYncmm17fXF/7j+xwMNrlY8R2qY7KqBzRDgZI="}, {"algorithm": "ed25519", "key": "1enaTKd9FssF1sjhk7P60UjBiRaStDz8RWMGtEB0cOg="}], "signaturesrequired": 2}, "newrevisionnumber": 18446744073709551615, "newfilesize": 0, "newfilemerkleroot": "0000000000000000000000000000000000000000000000000000000000000000", "newwindowstart": 282200, "newwindowend": 282344, "newvalidproofoutputs": [{"value": "227854642289931441149743", "unlockhash": "784a79f77bbd4cab8f5f0c8684d755bddff7c19b555a90dbad18a04b3cd5a968e5b3a6781d22"}, {"value": "942519801018311656854101", "unlockhash": "07732861f02fe5f5fcc554af2bb4aaca2487ff422a628f0e84aa516730400c22dcb41a9630ad"}], "newmissedproofoutputs": [{"value": "227854642289931441149743", "unlockhash": "784a79f77bbd4cab8f5f0c8684d755bddff7c19b555a90dbad18a04b3cd5a968e5b3a6781d22"}, {"value": "942519801018311656854101", "unlockhash": "07732861f02fe5f5fcc554af2bb4aaca2487ff422a628f0e84aa516730400c22dcb41a9630ad"}], "newunlockhash": "8ede9c844e43536a4e3399de8ded45ad5c06a9c0a146b3adb137e91bfedd5e8643ef696ee368"};
 2302.507515570967977... SC

2302.507515570967977800436497 SC

Hash: 6b61f2fbd16a4d39795a4e286b635ec1e0e0b43a4ebf1ebccbd65005d65e3bfa
c5e811defef24f2def9f9701d88a6c1749... - 2302.50751557



5250a65fc296c832157c935eede7d14d42... + 0.03858000
b82da4d947f34bfbf5ee581bac090d8250... + 2302.46893557

Fee + 0.00000000

Confirmations: 1

Type Transfer