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 0x7f5a9466f59a1747d59a7db4089c6b515d29e4acc2cbcb336fa295991ed9e786. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d47a9f46-472a-4d0d-b7cc-52d8e85ebe99.json and https://artists.proofprofile.net/proofs/artist/d47a9f46-472a-4d0d-b7cc-52d8e85ebe99.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Besame (Live Session) [Version acustica]
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 0x50ceafbf29b1ae2cc9f2d9f85d8ae25515fcfc384d399f2caebe235ff1be7785. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QT3EZ2476808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9d9f2f680a2b23157b1b779be701676a20dde3eb032419ecaf8006886693bb. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:55:28Z), 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/FR59R2518214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cede6df32aaccfa1ef3cce3e5f31d8ffd01414b27d31bc7bd11ec4f99084553. 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/FRX202505066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda822afbd78d9847f4e9d7a63a33a238d9daa827df4602720ef2eb5a55b4d232. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/FRX202505067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3378c6fe851b2d9b5e1c2fc577dbd659626b27c311d59616e6b51eb370c07dbe. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX202505068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5cc4a58a0c507dec6e7e844fac93822ee81aa418e8bfc7bcfb0357706737cc. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FRX202505069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c8b3fa12eed3ffa8e91cadbbcc247ef4608f22eb4686bd7edd1e19ad680f04. 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/FRX202505070.