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 0xb3311957c626bf781ccfe1aadd8bd0f63e37b6f72201703ea8e6f7bf8cfdffee. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7926a1f5-601d-4665-b2a7-d14f176dec27.json and https://artists.proofprofile.net/proofs/artist/7926a1f5-601d-4665-b2a7-d14f176dec27.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 0xb4680fefee6f6c6f878910b7bf12fcf7827b24f36e5f9958b57a83eac65634a7. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZES71978557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795a046c14e23b9c10b4e4eb7c205d117bfb70635258a3522ef8c66740bd1b2a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:50Z), 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/QZES71978558.
Dumpster Fashion / Rotten Customer 2013-2016 Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57dfc0256972f84a8902ceda505f18bfc5c4b28eae9f46c0f16eb4612391a262. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZBRF1800855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfdefa5c732c8823327f6d57ec9ce4099346d6b7c9f753baa0d8a3fea3f73fa. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZBRF1800856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5b17392dac5e62b2b44b4d047996d210e4b0c53d0fa560f5a96c2cecdd0e10. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:29:53Z), 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/QZARB1899774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc73a4c98b5710d367a738999e19a216bb002fa69dabd79ed21074d703c03fb. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZARB1899778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e12a1b59a1a4918ea8a2c9697b7eefb783ab1f998a288b7545405532700e2c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZARB1899783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254318e4097665cc2f931654d1a4aeff0539cf7269c233f2095446e000632a4b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZNWQ2169867.