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 0x3b8e6968b370b6de797b2278ab3b889e54e772c046d56a0f95d6bfe0d7d864e8. 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/24c6d863-b39c-4cba-9dec-7e300c213e4d.json and https://artists.proofprofile.net/proofs/artist/24c6d863-b39c-4cba-9dec-7e300c213e4d.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 0xf6543bca361e9c427e4e096940d800ad4b5c11f273389cf55a426fea8ea07128. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:26:43Z), 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/ZA56E1407354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0ab019dbfc1a7910d80dd3ff2c99f65852b28f0f211b683200710bc763e257. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ZA56E1407357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707530a47fa29b1b29542ee425e38d29e50ee3faa5e73c11ddc65634cac13652. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ZA56E1407349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ac7f77f7c247ba023bd97083aabcd61f6a814f84590f5882e5b787d12d7e3b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ZA56E1407350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc1f229370586baedd33d9739cdbf06ed1b5da875f04c79dca4433a72dc4c44. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ZA56E1407351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1d0550df9103f576b8aafe2eaa7f4ad6252758d178f52f9bea24663873341d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ZA56E1407352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a6a49a23879f5cb3b8784ed833dbaf5dafa35c4a0393ba09aaaf2b2b4c6a38. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:20:01Z), 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/ZA56E1407361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0227b9ec2ecc5833f8fe23032ae59e54653ccb24650d557e90a96dde0df308. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:37:24Z), 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/ZA56E1407362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc8ea440fac8a36966f93988500ee4b7610b27402b4055737e642ae893481e9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ZA56E1407363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ab2282680de67a0b6831749c973b5e562091ee29ae9dbb26ff6908ddc1986b. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ZA56E1407364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006c3f2f2915656c886776aac9af37ec11f7098b06eba66e6b65c3a95b2b8f9f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ZA56E1516134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c9543ab764eb680cbaa93fb87bd795e864028e3bb31ead4c59a7e7fc4e003e. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ZA56E1516135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c3c1bd2f9c313ed335811cf810aff75507c3b4b868f4e785d44a64616b86e2. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/ZA56E1516137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd516595b305ec34fc4e06e674629ee31f69d9260af6f08ac0302b8b7ee09c7e2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:40:52Z), 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/ZA56E1516139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa150539d1055b7e01331471f638d31ab8009516784b1ccdd5c821630f1e80207. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/ZA56E1516231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575df85c0a761402dfc113f9e1f6cf24068a7c89ccab4ecbb02caf990a1df544. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/ZA56E1516232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f71fdbf54b44ac62c409bd749e2fa9fa94856025422f83ec4853cef781f939d. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:59:18Z), 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/ZA56E1516233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4604be2a5a37e3933edd5753c9d77dda945e7bbc7cbbaa0f2a01bd71e24de8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ZA56E1516234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1637106cd5850890864aca59cf0896e97579735a33ca3a9f9a4d5866e8b0db. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:56:51Z), 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/ZA56E1516237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54f9be522a17595b0d0de5c1dfe40118b070e7aeae0d0557225601d4dd4bec4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ZA56E1516238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092210ab555efac8e6b20c4aa1a1d04bda4eb0289aa2c851ceb8af7c8545524d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ZA56E1516206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4136b71905fadd4bdc912568af1675f61f5a63f0b7d0561f507ff91662908001. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ZA56E1516108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb95d5910ae22a20dd36d70e264273641a614ac0d72d399ac5cb0b9833bbdfb. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ZA56E1516110.