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 0x20962fe736a34cdeceb8699144af7525e3c6a9ece0678f10cf8a8b39a087228f. 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/eb0ce38d-ec40-4f57-8dcc-1c130169808a.json and https://artists.proofprofile.net/proofs/artist/eb0ce38d-ec40-4f57-8dcc-1c130169808a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lately I've Been Thinking Of Your Mother
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 0x7ed30dab39324b7369da53c5daff0f5495589cae76602d894a91784707700ffb. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:44:28Z), 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/NOTTH2502010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22ece3458cd018e42d148ddb058caa3bc1e39e1ba4790393f4565aedbf478fe. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NOTTH2502020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d1d5ae04bbf80c895dd2d8c1cc606dba4c4c6a84231d38b024748bc14e2f8a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NOTTH2502030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b84f019763c5ae67a8f9163ac818c49b1824d77350daf27d21b16fc9f529d9e. 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/NOTTH2502040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b3e8aa97df4f2d223d532499d4aa2386e27e23501cae7f9a6cba6dc33364c2. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/NOTTH2502050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86735abee6733c8e872caf62ffa26483793b7a019b1a7b36721576343f8c715c. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:11:25Z), 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/NOTTH2502080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eebb0b4d493c257d31f2a4a7591d80a9bc536df8a8ac821e065b7ee10332b56. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:45:26Z), 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/NOTTH2502090.