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 0x12da8abf73622fd6e339823a7f750fd0e9a6b3b9166e28906ca5925f21037b90. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/459911a6-0dda-43e5-aded-1bc600357f3e.json and https://artists.proofprofile.net/proofs/artist/459911a6-0dda-43e5-aded-1bc600357f3e.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 0xe67b4f22efc76e9ea195a8b874818c7380871ecff1ec7095be6a9fef1ba792b4. 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/CH6541867182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33e97633840b1e082cd900ac6c752a731b79b662fa6f3a425c20da85ae04cc5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CH6541867184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420f53689cb82f44c6a60eef2ec69df0b6850ffb528b952e91d257e7cf247049. 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/CH6541867185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584345ada608ee0da60111305d1c0fa99272860c880123007213ec4508292083. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/CH6541867188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff1f435cebaa5d78649d5c9237ceb02d91554c78be12c710461c0a467ba1613. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:20:21Z), 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/CH6542245343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa0663c3550cfb20fbb601439cddaf86ddfb17f61471e4db2f82a4c0a01a62b. 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/CH6542210261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8298ae91d41e1110c53755b58b8613852c01c547562163913e1a76c4661dafd4. 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/CH6542267814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19fea2b7cc8574056f0ac68a85b96845a5d44ea6b3581ff7d469c81501f81a5. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:56:06Z), 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/CH6542262782.
Hoy vieron flotando un hombre (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6065673569721ff7a856540ba023a6bd752d28ea15fd23aa9c424d807119fc. 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/ES6062584801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67717cf49dcea8152abbc0d36efdf9e38602cf5001a3be325d9fc4efff728304. 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/ES6062592901.