1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06a0b4705380c264ddf6148585920248e20b9dda165dcff18d964cc2008c56d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52d022c0-642f-4425-8a52-a80b848ec905.json and https://artists.proofprofile.net/proofs/artist/52d022c0-642f-4425-8a52-a80b848ec905.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0625deb5d71c6c47a4b586b689d306564d51e4b1ede15e38b615adc942b03fae. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1xfqqPIl5KYfs9DOUv612f.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1xfqqPIl5KYfs9DOUv612f.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050a2189182ebf06905574a530e3060c24e6d35eb6b5051e5e55f8b9b398c5e6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6SzuRdWhuhbn4zwHB4k0U4.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6SzuRdWhuhbn4zwHB4k0U4.
{"copyright_id":"0x4fbe9f84eda5c0d71068e2a8cc743930a469481be2597f76502a5bfdbc28ba18","isrc":"QZN882360238","name":"KILO - LSDXOXO Remix","registered_at":"2026-06-10T16:43:29Z","spotify_id":"5lhES89BF3gE4XJReYFUqs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbe9f84eda5c0d71068e2a8cc743930a469481be2597f76502a5bfdbc28ba18. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5lhES89BF3gE4XJReYFUqs.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5lhES89BF3gE4XJReYFUqs.
{"copyright_id":"0xb6793868233d1521a66945c0cdae073c7533bbbc389effefa147d6d44f2769df","isrc":"QZWDW2303534","name":"KILO - Nick León Remix","registered_at":"2026-06-19T10:23:20Z","spotify_id":"57RiinyaALC0qE28ElOaKY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6793868233d1521a66945c0cdae073c7533bbbc389effefa147d6d44f2769df. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/57RiinyaALC0qE28ElOaKY.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/57RiinyaALC0qE28ElOaKY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce415179cb7065f360ea202c25f44d994735289d7372093879918fdbc2cbc51. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2uA9VBo1OP9GeNqf9kJCv8.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2uA9VBo1OP9GeNqf9kJCv8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050a2189182ebf06905574a530e3060c24e6d35eb6b5051e5e55f8b9b398c5e6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/536rYtZCAq33yLmthsLTfE.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/536rYtZCAq33yLmthsLTfE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0625deb5d71c6c47a4b586b689d306564d51e4b1ede15e38b615adc942b03fae. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0XKwWBLf9Veb5cXDOcq88L.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0XKwWBLf9Veb5cXDOcq88L.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53eabea695101e4f3ac3010cb08335c7d8247183d78ac431f0fd0835d6aef59. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3D5K3K3kHKLkaotWQukNwP.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3D5K3K3kHKLkaotWQukNwP.
{"copyright_id":"0xd3d75895690e4a5c622b0e018fabf1c8e2bf69dca364274431b98f6cd3a5b731","isrc":"GBK6Y2422701","name":"Origins - 3AM Tusi Mix","registered_at":"2026-06-06T06:11:31Z","spotify_id":"6OCycJBRIG7ItttiTWlWQr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d75895690e4a5c622b0e018fabf1c8e2bf69dca364274431b98f6cd3a5b731. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6OCycJBRIG7ItttiTWlWQr.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6OCycJBRIG7ItttiTWlWQr.
{"copyright_id":"0x8aa852fb197bbab8f6240454f77599cf20b2e55c6dd02faa86c894f3e2cf5949","isrc":"GBK6Y2422702","name":"Origins - 3AM Tusi Extended Mix","registered_at":"2026-06-08T05:42:43Z","spotify_id":"0ac7VgtKqbBLVnjqAaDEea","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa852fb197bbab8f6240454f77599cf20b2e55c6dd02faa86c894f3e2cf5949. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0ac7VgtKqbBLVnjqAaDEea.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0ac7VgtKqbBLVnjqAaDEea.
{"copyright_id":"0x58d3f4630fa4743e9ed488bd33cda48e7ff201824a61d4387b58342931c02dd7","isrc":"GBK6Y2422703","name":"Tira A Roupa - Putaria Mix","registered_at":"2026-06-04T07:41:47Z","spotify_id":"5Qizlw34GcAayL5dlXrCjq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d3f4630fa4743e9ed488bd33cda48e7ff201824a61d4387b58342931c02dd7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5Qizlw34GcAayL5dlXrCjq.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5Qizlw34GcAayL5dlXrCjq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d881fc261cb68c5a738daa3d1fa2852a3e1ead9e044264cd34da9de6f486478. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6TXC9egDVd0T6gdwRoT41X.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6TXC9egDVd0T6gdwRoT41X.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54c9373dd3a8cc8765cc9614fc26d93bd123e106c696b0052fb4de4aa85a640. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5Aquk2RpKdwaMK7s6yFGLA.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5Aquk2RpKdwaMK7s6yFGLA.
{"copyright_id":"0x55710f48e0adc3ecf740345f3ecc728460fb25775eb9ee63d70fbeb4bf730c17","isrc":"BXG9S2400094","name":"Cuerpo Pegado - Max Chapman Remix","registered_at":"2026-06-05T23:21:28Z","spotify_id":"3l2pUqONbFB7y8BEJHeKRF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55710f48e0adc3ecf740345f3ecc728460fb25775eb9ee63d70fbeb4bf730c17. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3l2pUqONbFB7y8BEJHeKRF.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3l2pUqONbFB7y8BEJHeKRF.
{"copyright_id":"0x55d0b0875f78b4edee9ce5f97397fd183c6088a20426539b13758d94eb1abea1","isrc":"GBKQU2432487","name":"Still Pushin' - Radio Edit","registered_at":"2026-06-04T09:10:32Z","spotify_id":"3OBUo6PrzYAxkudyLNryFV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d0b0875f78b4edee9ce5f97397fd183c6088a20426539b13758d94eb1abea1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3OBUo6PrzYAxkudyLNryFV.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3OBUo6PrzYAxkudyLNryFV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1957acea50ccf4eca3130053962b2884dd4b780987fe5c38eebcdc284787183. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/39JDdezxhax7XyjkRpM6Ds.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/39JDdezxhax7XyjkRpM6Ds.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84c5f6dfe266c84d8b95e7bb36ff9ba43b84d78a729c01d943def3f9cf2ded3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3YvkoTPtxXvcEfs3vcZQVl.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3YvkoTPtxXvcEfs3vcZQVl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97870f30e14379e637fbbab130c3b602962c38bc750dbdfaf91abcc248905b99. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2RvjRFKZEl5h5S8QftppUR.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2RvjRFKZEl5h5S8QftppUR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fff98192d06f806da4003a2ed96700a0824746444dc2d872e44bd12c4bba690. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/09fLcyru2xKfVPpN01dL0C.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/09fLcyru2xKfVPpN01dL0C.
{"copyright_id":"0xd4cae24aeddd17da26a40c02d9fe7515a16890aaf735e2fafcc07b1e1af73bec","isrc":"GBKQU2286551","name":"Smack Yo'","registered_at":"2026-06-01T07:18:05Z","spotify_id":"2UdCQIDwFvGhslUYZH5tRR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cae24aeddd17da26a40c02d9fe7515a16890aaf735e2fafcc07b1e1af73bec. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2UdCQIDwFvGhslUYZH5tRR.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2UdCQIDwFvGhslUYZH5tRR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b9ff0f3e22b5057d5c6a579c4ac0bda1f53c119d1c67a2ea30240f5d47d9d2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0HEdybB8OI2trJwwN3znNh.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0HEdybB8OI2trJwwN3znNh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34f3e3ef1520a340fe0f902bbe96f256764b7d613bded8d997be1f104b241ae. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/05t6VD5eeVcKtFLPe3t8jP.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/05t6VD5eeVcKtFLPe3t8jP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97870f30e14379e637fbbab130c3b602962c38bc750dbdfaf91abcc248905b99. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/00n1dp5vxKRq2vkfEwgtbb.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/00n1dp5vxKRq2vkfEwgtbb.
{"copyright_id":"0x562ca09e09922875212985f886864a28e5ea6dccaf2b41a1263e0d8fac7401ac","isrc":"CAOOX2500201","name":"Comissatio - Beltran Remix","registered_at":"2026-06-06T21:33:19Z","spotify_id":"5nUHf21sxSkqYYmsxdGtKo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562ca09e09922875212985f886864a28e5ea6dccaf2b41a1263e0d8fac7401ac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5nUHf21sxSkqYYmsxdGtKo.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5nUHf21sxSkqYYmsxdGtKo.
{"copyright_id":"0xc15b722d63c195c5cd1e80bc5ee16bf525ed84b67cabefa726dce4d3d77d024c","isrc":"GBKQU2511654","name":"The Other Side of Matrix","registered_at":"2026-06-04T15:13:35Z","spotify_id":"4yvTKoug0u40b2UWeUHQWK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15b722d63c195c5cd1e80bc5ee16bf525ed84b67cabefa726dce4d3d77d024c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4yvTKoug0u40b2UWeUHQWK.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4yvTKoug0u40b2UWeUHQWK.
{"copyright_id":"0x22005bf81e78c903de138b4f5271feaa424027d19ab460704f1fce43402287ca","isrc":"GBKQU2511655","name":"The Matrix Of Other Side","registered_at":"2026-06-06T08:49:34Z","spotify_id":"2yxMh6UKIMyJ6qOpYXUcAC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22005bf81e78c903de138b4f5271feaa424027d19ab460704f1fce43402287ca. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2yxMh6UKIMyJ6qOpYXUcAC.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2yxMh6UKIMyJ6qOpYXUcAC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0374e1646264c04feea03b5e9ff7d8f6c069d153fa865942f5ed85624962ab1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/75rxVv0sO1NbAq3FOLRu24.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/75rxVv0sO1NbAq3FOLRu24.
{"copyright_id":"0xe76f261313f72e24a8281423e59a6c4dfb8938e8b187b4996a9aba85de547f3a","isrc":"GBLV62409065","name":"Dancing Queen - Booth Mix","registered_at":"2026-06-04T15:11:49Z","spotify_id":"4tAaEc21tmsapEjMnSz0Ie","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76f261313f72e24a8281423e59a6c4dfb8938e8b187b4996a9aba85de547f3a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4tAaEc21tmsapEjMnSz0Ie.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4tAaEc21tmsapEjMnSz0Ie.