1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7643d49bd5482e9f6d07e52808b2a36b739edb100f04afe87240ffa3233f59ef. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91933b8c-7eff-45fc-b0fa-ae9e77c3fd91.json and https://artists.proofprofile.net/proofs/artist/91933b8c-7eff-45fc-b0fa-ae9e77c3fd91.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Going Home Again (2025 Remastered Version)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7271b9e181c765dedd26ae4884c028e33a09ea772c9b72c19ae930a58f6a0fd2. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJH2520482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bce58c3afc9ab2e17d158727b25192d96265c9ddd3882d6bc0fe42486642819. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJH2520550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e04cea187e2ad6eeab75f692b46d0cc8bd72602d8336f1d93041cd5343d5238. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJG2520554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4201df30358fcaa4aa0921a49a0ed8c4f3f80a18b8f9c3179e4445100bbb33a0. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHE2314393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c3c2c62e046d9801309fe89eb8a3cd918a783eac00c9160fe417608aa03a86. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHE2314392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447ce8146c172395d1d863f33cca80862372dbb63a6479d8b8e5eeb827f858f7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHE2314404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cf2bdecd3694c6a394c838ec41a5425dc493c0f956d5b7ba68cd77ea058fec. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHE2314402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb31509b9009dae147625275bbde46e122c694690ec6432c0ff58f6218a6c8a2. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACZ1736614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e287446226914653bf047a632107b44024d75080ee79350cc0888e507b125fb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACZ1736628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebc644e542ebc26b840f33646dc8bb2349ead3285626cfff586db971a069336. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACR1667388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ef5bdcdf11f74f42fd7f83262f80c06b9317f18f39a8a49917d352f1e61e4a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACR1667389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c50dcd9f9563150828497da58dd4bdca1f3fda1d2e5c71d45728d54268bfd31. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACR1667390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c67280ac8744a664a347d90245f53745d87b44c1480ea5343a1119121e5db7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACR1667392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede92f74df0f6f6e585932fad5a7eff6fe639e81569435907325dc676a7ff044. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACR1667395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf228037af0845e00f97bb14da03834c286caa14dbf77410f3930c580cdcca79d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACR1667397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e49c79f4e0ad8d21914d3193b12e91a640c8c7d613b3a354898ae9b1a65254. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACR1667400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace4c13efbc6194c62362fe054845f3cf2a2f6691228cf0d09edf30b403234db. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACR1667404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa154d2a67c1d1d865481dac44f0be835391997508fac6cbcc2a78ec1e10829ca. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACR1667405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d3c9b6df55b26728d38b136d04aedbb878cac9b8dbf01cc77ce981819f4baa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACR1667406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0863cd0803416b2b80075e0e7bd9d3e1dde527518dfe1d41391eb486918458a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACR1667407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b9fd8dd778ce0b4a631c394fdc80eddd5294d21093183083578767e59ce02b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACR1667408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac862d801bc3b357f8a6c36703240713f37f797c5a3d371f12e75891f5e01d1b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACR1667409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a594f2ac7879b75c93d3c028c7e57ce31a60a71dd26a594cb99401459d9480c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGT2320488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc473a2923915aed3544f1ad3a5b0ec9ee15d85c082fa5ff681822722336ae4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGT2320496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec1e3faa7e904e75004dda5ebdeff0cbc953f46540c2fb94f106272feeadf27. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGT2320512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292fc27f3a2dea0b9cf3408da3373cebfc74b7b418004722fea8bd87d74767f1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHZ2421320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9422abfd562676e8a6c9efb50fdf611c3bbb8e4fade89d3643aacd72733a7735. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIE2484765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4a323f045975c9dec9a35cf9d05499acdb4c0a73a8c804d276c400a9552d16. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIF2484863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226120d5594afe292cd302cf80cc0f858025b81080d557d12ad8c6b9409f3c77. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIF2411917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533179362cf67e548651363d6a925314a23504fa5de8cb929b6e9d7a0f0cb727. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIF2412158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e9d6c5def259dc9d005b7c03f7ef5c39efcfa9cec56499b2af6edc09ab799f. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIF2412244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42667ed1248fc1fd0e29cf5d39568142e74fe725de747a21f9d24e4ffe4654c3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIF2412285.
Right Person, Wrong Time (Night Club Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb3b173326eb684c372477b1cf6a16e822b8abe50748d0cac693f69ad849064. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIO2442296.