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 0x4b1f67512628fb07dc68f6ef569203577ed58a671e993ddd697cd4e2dc3f6109. 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/678c76c8-f88c-4e6e-a2f3-bdcaf4f789ab.json and https://artists.proofprofile.net/proofs/artist/678c76c8-f88c-4e6e-a2f3-bdcaf4f789ab.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 0x44ac24c770d1e28b8975c4e89acc265bc64492be15b37efcd98aa17611ceb8f7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/MYFH32510001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51091e9b42933971a5271f7dfd2a3343c3fcbeb88e2017d922c60aaad5569be3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/MYFH32510004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb84d5021ae1199bdb29c31cd49924a749f0d5f974c43800959c4d79caae68c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/MYFH32510043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec63b8e125f48fb900d384b5eeb51e94167d8c4fe65ece23e340faa748520973. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/MYFH32510010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fd4d8ce73decb4006c1dd46815270bee9f98f774107d336040d1185486a3cc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/MYFH32510013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521add946a4d983b3afbcfd4d30b59276ec44b55bbd27bebd817f972dda6451e. 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/MYFH32510016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1e777d0e53b864ba34da974f34d702fbb82246fb050e6c265164ca9235e10e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/MYFH32510019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3996544712f50e42a2ed861847ff5d14f9c4cf719c675dc4952682f430468e64. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:01:56Z), 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/MYFH32510022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfab1032405ab97401b907c39e12ccace9837a5a99baeff2b6ebc5e1aba1fbee. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:52:54Z), 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/MYFH32510046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ae3e8bd8a259744f1005122ce84475a26cf0636ea256d032874a4c7da6fb63. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/MYFH32510025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd7f0615f9a4b0b8775c88f937bf05deb86759ef888a7ca3a6cbba5f81db6fe. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/MYFH32510189.