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 0x70f45b976eaa9c46d4102312e649b0425ecd34f2924b2684438edff35e9daf55. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7fb891d-913f-4f2d-aa7d-d5a314c98752.json and https://artists.proofprofile.net/proofs/artist/f7fb891d-913f-4f2d-aa7d-d5a314c98752.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 0x8aa6db6c63816e8318d27063a3e9cee8d8267197f05be018073e1fb730095430. 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/ITZ0X2190182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb92be56aebb969b13e7317d8b8270cdb2c19a478a0f7aa33ab3545bf67514c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:06:54Z), 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/ITZ0X2190224.
Ma te vulisse fa' na gara e ballo? (Dance Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72278e93f90083d84404a26b744486a210f6cd5ea5aba6e31a4f3584a89f1d32. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/DGA072349310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8a0b9dbfe0e1881e3a4da7ee9f0c83c81b4f76d35269ca45405f2f84da93f7. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:46:52Z), 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/ITR632401128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0ed3e37c4004a1865565f54ae9f2345e061b5f155b6db02374bf6b180724b0. Chain 2 (Bitcoin): anchored in block 957535 (2026-07-11T07:11:01Z), 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/DGA0L2458767.