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 0xb9ad21597c6c38ef558e58406213361582a082821409d8c2e973c9611f0fb23f. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa252a67-5385-406d-9209-bec7f0ac4539.json and https://artists.proofprofile.net/proofs/artist/fa252a67-5385-406d-9209-bec7f0ac4539.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In the middle of the rain with my beloved
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 0x2bf359ff46efb218d23b597d0b58f47ed967678e3daafbde04572b3a3d88e796. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:46:09Z), 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/QZGLM2475072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe539cfba26ca2c5f556843c2aad70a3dc60b8775ceb8c9a94739414de804ba07. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZNJY2475798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44593593063543c81c3ff4d232bc824844a18d605b0bbfc04ef9da03d7ecabf3. 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/QZWFT2480136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cd057da91f6bd592eef0fe5467e5930c32f4ee6e0793835dabf2a1f599f11d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:53:43Z), 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/QZFZ22547461.