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 0x80304e4cf0bd37da13eaea46244b3b2081791faae1a5ba49e82bf90e66ffc530. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0bcf29b0-0a13-47c0-9350-1d31b0bed7a0.json and https://artists.proofprofile.net/proofs/artist/0bcf29b0-0a13-47c0-9350-1d31b0bed7a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Con Sabor a Costa - Piensa En Mi - Eterno Amor
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 0x2ee55b630ba06466d2b907eb95e0b4082ae30db14389d4e4d340d01cb9c027ef. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QM6DC1413856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c19f75457d6a148791a81169b6cda4bc6c17f9192ca5e8fe9d3f9c92403662. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:45:17Z), 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/QM6DC1513875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3403878dcd8013ea39a551a8f9c5b91acd4ae34ba6397f5ea108445d7e915ab. Chain 2 (Bitcoin): anchored in block 957697 (2026-07-12T11:22:18Z), 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/QM6DC1513860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9beef1c0daa61a9f60e2cc767f914311a6755e5634d347c287c667ddaa84762. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM6DC1513862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b88db79b0efe03b280ba577768842bc926fa96ada60d0e7b4ba8dc8096918c. 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/QZDQH2164432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8b68790ee97cbfbf25f857e85a6696a83f14d7942799ae28deb6d7a05d7187. 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/USJ3V1118563.