1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x0ff6ee8faae5c790b69f06f4385fcf8221319ea2c60ec7872c4c3e7ee629febb. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85d31191-0d2a-471c-813b-414cb7d7da6b.json and https://artists.proofprofile.net/proofs/artist/85d31191-0d2a-471c-813b-414cb7d7da6b.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 → block OTSBitcoinBlock must exist at that height 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 0x301e766557dc7dc2cbc0dd04b2abf5b6c0eccab7ba7a12ad00daf0413a1bd8de. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITPI82000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbff514716855f16cde8740f535acd03163305f46564c278a5e1176b1b96c833. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITPI82000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02eff57e41eda1b50063e34617f449bc6315741297ccdb55ba5d922f6fb8ec1f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITPI82000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e653d4e9d4d0741d3bd691a9e06ce24b7e429bdfc2a89de5c18ca4173f6363. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/ITPI82000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666d03a282e23e0b608d872f8e696bfbcec84e7976562762a0810ac0725394ff. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITPI82000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccc59c0aefbdc807697ed5a6cb814e9f51a1de74dc7bc6e086b9167e0bc0187. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAIS2480585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95432462d0a424f59c2a891f62f394a027945b537a9f5541cffd9557e941a7f8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAIS2483191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e65781a38d8ca6549ad76da7c197711781546658c5af51e4a01f649059d588a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAIS2483219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d077882d821f24ad1b465a9ca97bc2b65a542329b7fa25901be33e5ca43fbc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAIT2483292.