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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f8c21fced0dfca2bfd78d2dda72ee743d12dc5a9ecd7d86602f034961d2e71. 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/15bb81bc-e63b-44f6-b105-651193dd4496.json and https://artists.proofprofile.net/proofs/artist/15bb81bc-e63b-44f6-b105-651193dd4496.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1ce65ea23f53acdd2b3b2901cd7981a033d2e24fc8684e01841e1cc24ed9d3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZ9Y21704156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f634674601551f88e5eb2d4e25cee70880961b017fc2344f3a002ddacaf04b. 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/QM4DW1822172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e056f99976f41494dfd7f7e51df8aa0e6366e5473526171983e4fe145ef990. 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/QM4DW1822176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dfbec5195de8a42a897aad353caf54a01c0b45ae246ad972dba475801a96aa. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM4DW1822185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e0911f8966bc84e07b2a36a31d3ebaadff2fe465454d6ae65dd432822988cf. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHN41941215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfbdd81a2292be77e8087302c702140c034323e778c4d15591228a02333595f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHN41941219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b186c4e8160472d83c8f74f62b996c88c71c0d8b6a257aa2395b7a75d310e9a. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:37:21Z), 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/QZHN41941220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba87f24a059fbb89b0b2d891c5a9291fd59289b6e8bd8a72aeea4ce8f14c649d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFYZ2039917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a3715e73c2d46c760d6ecefb704b1f841fa97861d46e5150bb94bfb7a4f759. 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/QZNWS2198814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9cfaf56aece1099fcf036e04210ec472f967073fdd051dbe998ba73673ae81. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZWFJ2307934.
From Erast to Olden: Epic Celtic Metal Reworks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6d70f7d0ec619c4f30fadb6601e7e4ff9fd92850a4601d91f0ce518a02ba5d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWU2514249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bb4080aef756398059bdf3d65814cddba7018828cc6116c247e9be6a7bb7c2. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZNWW2573214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acc4ae1b609c0965bb8658ac26841eb878680c829f6093cd076f185ed4d8982. 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/QZPLS2593325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c7b8dfa71711e2941d035ff9a4641bdaee19010b4262fc8fda56cef9bfb3c8. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZRP52529897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd530ec954735c13b1535b9be24ef8dbbdd7a8f06f643062a2a5d9bc2858fc8dd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZRP52575940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe033fa721c50c442d3caeefa198a7173ba705790264f3967532ac81e060748ce. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZRP52527356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f74242a2d22133e11d4f71b4e59641796978f1ed994e259c0c11e02610f6fa4. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:36:42Z), 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/QZRP52529898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45a502a880b60269fdc30b780febf5e6d96b384a8c241aec15cc55a23a73b75. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZRP52575942.