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 0x46d6474b6d9a858a1d4783ac50da92a634e64cbfb4f1194286236b70adade73a. 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/d88c85ec-1a53-4a29-976f-4643b923db48.json and https://artists.proofprofile.net/proofs/artist/d88c85ec-1a53-4a29-976f-4643b923db48.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 0x37c48550a34c0c6d3c49278f93beca64618d92a93a1b4f3bc780553b68b399f2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DKW922002009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce40f81e1ce2424689d96142f5ee5db5549e1302d2e57ac16eae4dbaafce353. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR26V2079052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165a2462a2174f4c775b5ccc2a6a28b494f7dabcf50a1615e7c0787cd767baee. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/FR26V2079053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82519537bd3f13149a57555130c1810bfddb5c439b24ae81950f367153c65ae4. 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/FR96X2147025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf061076b355d2072f60a2753ec9a62df5c680bb129ed89d5932a0e80e5aa85af. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR96X2147026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea79feb0794a0734d5a65867443f0630687500805525704ffed08c770c965ef. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/SE6N62206669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279055ad57078bb5b8d06444758c0ee2e61341790576effd8591031cdfae71e2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6N62216442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c54b661961424e679f752fb36878df764312075391514b2eea3425cc54477e. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:40:12Z), 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/SE6N62216926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88473456e49f6f49caafa52021e4d484ba4b2cebb02f42697fcfb8d49c596feb. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:40:39Z), 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/SE6N62500244.