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 0xa298867e9498d6b105ecb7be7fcd4818c320ee7b1f584e35a5393255d8d832b2. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89070ca4-abfe-4e3f-9fbf-6e8f461080fb.json and https://artists.proofprofile.net/proofs/artist/89070ca4-abfe-4e3f-9fbf-6e8f461080fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
SABELA I'SGIJA (Official Audio) prod by Wolcott
Stina Way(Masingita) (Letter to Nandipha 808 & Ceeka Rsa)
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 0x86433420cef7b70cb525387f1ca4bc47d38d7b6ab4ab065f934da6215fd4692f. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/GX3Q92405765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0098e3f3a9b0058b277aeb5eecd46fafa6a3abf57ca19f5edbbe9d73c13afd7d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UKXN22583081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80596e5bc3ff75441672ba9b70e50de76c6c5b63f2b6b4ade21f9ca50547462. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:53:54Z), 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/GX3Q92573817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c37dd1d91f0d911feb750927e8c5fb764ebcd25d1d1f47defc810593675f62c. 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/AUGBT2522616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8487bc270c4947a72e6b1c49c74c097035117de00419b863ce9b31ecd36c598e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUGBT2492410.