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 0x23fd1c6c3705d0ce3cbbc4faa9a790b1ba3da55580fa78afe71fdc304710f57c. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c95f5174-ebc8-4dc3-a567-63e0cab7a68d.json and https://artists.proofprofile.net/proofs/artist/c95f5174-ebc8-4dc3-a567-63e0cab7a68d.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 0xc2fbea0ed49382d67fa6f13ace0553dd421409efd10771f5769ca2b6379d4020. 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/GBLEY0500011.
The Angels Fly because they take themselves lightly
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca86b8b59ae2813547ce15a11675fedcbfddd6de3c9a9ce2537ebdcd25aae0a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:30:44Z), 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/GXBDH2301011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93886a398e2132e3e59dd4303f99ea72f0a5c8da07a69600ff46cd545cb2f27c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:55:20Z), 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/GXBDH2301009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21242f8d2abe609fa793fee81624d34c0e703f92f1ab81547f6797d7dce22483. 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/GXBDH2301008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561f7b8ed32ce5025753fe91796c66fe91661b73099a114035151acb84ca5cec. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:37:43Z), 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/GXBDH2301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e2946c48dfccc8c957247bac4429e3c49ea2781f7397aeeea7372c5f64b1e6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GXBDH2301012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7554282a899b12d7cf7e0fe153940b6441c8a36ad60af055054b29858c7456. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GXBDH2301013.