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 0x65c650a14341a0ec6b47f5d6794e7216253fa876aefd45f9ed4461a8fde16acb. 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/8c7d4c38-b0cb-4f29-aad6-999191b72d53.json and https://artists.proofprofile.net/proofs/artist/8c7d4c38-b0cb-4f29-aad6-999191b72d53.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 0x827f900d57117be7ea150474c8d40a25f5bfa2cf77e7108599fce540d55b49ba. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX202089905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e4200e2b1774d87b1fd7771052682ff4129e5e2e45a90fdb5d1dc98a16ccfe. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:04:39Z), 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/FRX282089842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ffe0e29db34d8d2e6ef1d53251003fd346c23ab9f240ac0caf7331d860b575. 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/FRX872049655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa96b61180deac45dc238bbf699eb1ea541affdbd872976bfdee42c855929aaf. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CA5KR2370991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b430717d78c4ff292ae7343e7c242ab3703f79b2cf924ed980d572465a5a051. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/CA5KR2370992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7508fd4da075663f57183961e176ccc77171c5dec96ed034cc85b8f15d9207. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CA5KR2370993.
I’m In Love With Everyone (But Only a Bit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec3480d6804ab88f123d3e3e00ff4330ae6235dc304215ccadf730900cfeb36. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:06:33Z), 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/CA5KR2370994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432d5186e269860c88d96870eac9e5541f44a2ba07aff500e1ced830d47c44fe. 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/CA5KR2422867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e19e472b903888b61173999c09728d5a72665c81d5b923f3ed1a25aaa942cb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CA5KR2441748.