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 0xfc30b9506e0e80f23c441d4455c3f10d60091b5ce41386f9a0f2b92fdeed59b3. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26336252-7964-4e90-9231-6f5b0eff5cfe.json and https://artists.proofprofile.net/proofs/artist/26336252-7964-4e90-9231-6f5b0eff5cfe.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 0x49a8839d253d6b67a4d62ded0fec956c0dc14326177ac299e0d29c7f057e509d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:29:49Z), 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/QZDFP1886746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5dd6b9318726a86cadeaa4924ed48fc6c2c52afe8f156f74ad536ba373bd5e. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:02:01Z), 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/QZDFP1886749.
Las olas (nos llevaron a donde nadie más quería ir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59bd1483d19b61e5b6c541cf9ceecbec947ea97d4928ad000d81480894e59d6. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:24:44Z), 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/ES71G2232640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd258485e5f85cd4394df019ff71d61688671e7050d0269af10499644dbd13ac6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZDFP2138737.