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 0xbc343bfc966da091d8c736dc69c6ef01f69a29c1481268c494e1967ab6507122. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6333138f-77b4-4da9-9fcd-1ab159875240.json and https://artists.proofprofile.net/proofs/artist/6333138f-77b4-4da9-9fcd-1ab159875240.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 0x8025583e5e539732b6b444b8f43f055bee5e7d1789e0d345be950e6f0d965793. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:06:13Z), 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/NOAGW1200162.
Far Between Highlights (And Further the Distance Grew)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8128ca87555ba1c8f7bf28306b8645fb3d802187ef5a0786358c85c5f9155f6d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/NOAGW1200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea322119964e158d6ee392de0670eda8ebb5f06cf799efc841f4de3e4cf1da75. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/NOAGW1200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f4a118e9059d2ca9509a8edbe4d8228d4a800f930580342054120261bf5293. 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/NOAGW1300630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dad7924e17453eedc61de79764b73bfa8121a350b30cea059c14783bb430d18. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:44:42Z), 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/NOAGW1300633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31f2d0b519902fa02f3ebc92116cab695abd5129f7c07574d6ebf0e63a4614b. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/NOAGW1400265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa602a88312b07667ce38f12fbc4e0f6269bd376daa8e1bdb325abb7e547de7a3. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/NOAGJ2220008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318a6075a5360f16c75fd286878f8b86ae301fd1217e7ac0a13625d682710028. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:09:52Z), 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/NOAGJ2220004.