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 0xd317c13ebfbb1cf033839a8d3987f8ed44bb8c28fb06626d3306392b54e4ec67. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6e20939-c8ab-42c8-bffb-0237bcb7e8a6.json and https://artists.proofprofile.net/proofs/artist/b6e20939-c8ab-42c8-bffb-0237bcb7e8a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozambique (feat. 10x Guluva, Yung Silly Coon & PILLS)
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 0x4cd7856da4268c98344876866f19a0b274f6224d044a6477602671ffc063ce9c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZAA012200454.
Oksalayo Siya Jola (feat. JazzaMusiq, Kgocee & Star'Jazz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96683c97edbd1c8757c76f517d64f072e1d0e19d949f4a7ab2ea4e4d250e9446. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZAA012300089.
Dlala 99 (feat. Yung Silly Coon & PILLS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1fdff11a53365cfce5f5c6be671edd4795869485a2f34e4db36a971ff73bb6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZAA012200453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd7856da4268c98344876866f19a0b274f6224d044a6477602671ffc063ce9c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAA012200454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fac8e1682cdbd4c05884172a77cade0b50b901266eb15da5cf4a656c6275c2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZAA012200459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d593c66575900c603afb382ea0b13f76f9fe6243c280d0bf1fd5ca665d51146. 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/ZAA012200460.