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 0x0005b2da57ca3f960cb24d49d11bad54aa81e09fd4982759aaec3dfdcb7a2005. 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/02a1a6ac-b91f-4ff7-8947-be5efa7e7b7f.json and https://artists.proofprofile.net/proofs/artist/02a1a6ac-b91f-4ff7-8947-be5efa7e7b7f.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 0xf13581129c7e365ec5898402fde0f73abdba965696c3a8f360bf50e74135a5eb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IL5842550917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc0928464aa742905c245d7a04aab08ce32ba7e7901d3f82604998416a233da. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:22:19Z), 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/IL5842550919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf382c2b8e76b608502c89d54ebadcb5dd435bb6d08ec76f9a834412b6d94d69c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/IL5842550920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf962a4ae1c1ab936153f10690e17cc45b3b5ca8706ab2cb9410b221fd2cbc3c4. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:41:41Z), 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/IL5842550916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9526010a0c8aa806a07b11c4b41a7a4d2bc645672be26941065056d4c30dc2e3. 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/IL5842550915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07776642a27c3ced59cd3226df20763ff8185a11b9f01c6073585d03ead9f22. 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/IL5842550913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f93cbc60ba4f2725783652106867584516836969d74409d9c6519de15dc35d. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/IL5842550939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6100d70c2cdc021ba808cd256c9a1f575f5249f3b8a4ebdda142fbaac73cdee5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:43:43Z), 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/IL5842550951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe698aad8d6f20cdcc52be738a86d680f04d04ee44b35b1c8baa5cc0494d564ac. 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/IL5842551031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab3576d4f499045581133a398733e2a6cc77916bbc18b351b9fed7e85cb414a. 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/IL5842551032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb054ec5b9af59284ef37356660fe6aa0b6489882415c3a9b463c25561b1ff2b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/IL5842551033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3e659ea0c92df33cdb6671505b9f020487268e6939708755a3ee41747dd954. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/IL5842551034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92aafb4fb0fbc64f4eb479bbca686edb028a6914e62b1f1a53aa4c5a8c490f26. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:54:52Z), 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/IL5842551035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6814afa2fce8611f902b611f3decdf942a5081248df75b264d55abf1db9271d9. 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/IL5842550922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163b04bade4b8054734d09a795cad5b193613676303f88a41a347b1d5184504d. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/IL5842551136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c6a25cfcc4e2bfde2e9403916c26a04735f11e800b0421cbfef65b9144b223. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/IL5842551135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b499a52d30f16fba7ab90dd66e8f08a5d7ba1cfdbe882bdc7fb40f37dbc90c. 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/IL5842550923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b29a924fc0b8120d1bf838a7be58c9e68a1f9e230afd21744967d615d92479. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/IL5842551319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0343cf6d5434d5ca64657b3d47777499d1029dd51543db26361cfbc3e66a99. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IL5842551320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ba3d9944488f4137226451bf50d88dc85b02104492b65b1c652685c3328753. 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/IL5842551321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efb54eb51e106974d2a59e9befe8f230f3cda7f43330b8c8632bf6e5af43d32. 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/IL5842551325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a339708d57901a2cf657980b6ad49ddfebc1dde5d1fe8c019cb43aec302407. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/IL5842551492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d518d6f963913f3f662d1839668ebe7cd252a5eee6b223cae6c1a8a7b85b0ce. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/IL5842551493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd74dc81362543a3dcdfadda742365ff2437e75ef182787552e8c9d74fd29414. 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/IL5842551494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6d3c495ac32ca9999c9b9fc6634b3c76e49e4adbb043d2ec6e02ac60b11087. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/IL5842551495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ba90ef0016c69864e21e20f2482fde67f775279aff4a3604f405a5e41f2630. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/IL5842551497.
Ye Make Me Sense (Sea Shanty Album Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42aa1578242e99e782f2f78a4cd6f153247a55cce2fcaf752978887c48f0dcdb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:04:39Z), 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/IL5842551309.
Another Bug in the Cod v2 (C shanty Album Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdc9308e23087d2dd2ae5f66f445c16ae1e1a63ccdbcafa973ba7fd34ebe919. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/IL5842551310.
Lasses Live Longer (Sea Shanty Album Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a8d8517939281401fa023bc27692ba0d56969cdc2ea81e65ae59d1d8948088. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/IL5842551311.
Yo Oh The Fall (Sea Shanty Album Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee0a8f016ebb09086fd74ade7597728da556971ca2b1cbbd6f82a463c57c099. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:22:21Z), 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/IL5842551312.
The Ballad o' the Wayward Plank (Sea Shanty Album Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1f5001aa09a2ffbb3ba5705c521d2488e458f79d43035e30ac31e26311d4b9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IL5842551314.
Serenade to Me First Heartie (Sea Shanty Album Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3160b30c021a07d9b6fe775ac339100e6028856f3667394724f605375643412. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IL5842551315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c63373cff7783f174695d5091973d61ce8f6b1995fe5cdb9d7b95db893f26bb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:56:13Z), 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/IL5842553178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c73d19a842d19646d1da569b6c3a718d6dd306c1b436c3a74de096b93ff166. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:08Z), 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/IL5842553179.