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 0x9661cf843b087089f22d2a37ac6b0861046c778920da3df6bfb83c02a0f054b7. 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/d9ec8ac4-7dd4-43d1-89e1-6821bfd3c85c.json and https://artists.proofprofile.net/proofs/artist/d9ec8ac4-7dd4-43d1-89e1-6821bfd3c85c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Watch Her, Whip Her / You Call Everybody Sweetheart
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 0x3b819c2277d93c24886bdb7a42edeff5014361ed8478976cbb13c1dab3c61658. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/TCADI1739004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae83ad128900ccec4287b5119db703faa7f4c0ac9f95a14b7f8cb168afd38bf4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCADI1740671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450b448134a7a7e2367eb1e1885cdd7ab3faf0af56037cd5e5fe301d3ed42fe1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:05:48Z), 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/TCADJ1705630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd288dcdd44a772c2cb497e3b65d2e10f53821c1cb9e8c74873ae752a3380db. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCADJ1705660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e9fd1699adadeaf2aa65274ff5b747b5f9599b6c296713bcfd0ec162619d03. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:05:40Z), 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/TCADJ1705795.