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 0xe475d7b2fae627aca329aaaa2d91a47256b735bc56a020fadb49311e3eb550b4. 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/f54bc4e6-75f8-4d4a-81a8-b28803da101f.json and https://artists.proofprofile.net/proofs/artist/f54bc4e6-75f8-4d4a-81a8-b28803da101f.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 0x94e68e3b9da09ba261736922bd536daea0fe30d603927bd9ab46b2b9f076c970. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBKQU1501937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4226b42f2642923081863c110d97d7074bc3880f11453c78ca7b3c7056245d5b. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBKQU1589385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7261ca640743500b5603477645d7db83f0d84644aac2ac47030b708ae7524c0. 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/GBKQU1589386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7af6e4579c9102ca8b2945ab4fb4d692abe5db67e5b65089c37d5caebda405. 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/GBKQU1589387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44961ce0dc44b77116ac8bdc4f286330b239295afd178976c54953931fa0368a. 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/CA5KR1531326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef7f49ca0900461811f712da25a0f637f59feff45b033dd80899ba27b7ef4be. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:41:42Z), 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/CA5KR1553594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291fabd0c57f7c4bb69396bd6eea79ad59a1a1ff7d9b05e4d6f7a46f9cfc9f57. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:16:14Z), 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/CA5KR1553595.
But Wait, There's More (feat. Thomas Pruitt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109b810f34589b07c277e76bb6b58d4d529205392657626ac641f1fe68b6501b. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:26:24Z), 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/CA5KR1718310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09963f9cfff659ee2fdc476fb58f6b8c71d592dd1763fd6b0fad1483b7d2a30. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CA5KR1718313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4005013843480c282cce551b6433aaa52c3fcf79f51f8872ec309cde6238dd34. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:36:19Z), 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/TCADY1803582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951b8b58d7ef6292db25d8f16eb7f234c19d3bc937f98d1ef18017092df3e0df. 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/TCADY1803588.