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 0x7683522477b78c0a250ccd3e50e945232f33e4f175534b524ebf65f7d2082f1d. 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/9c4bbad3-72e1-4cfb-bfcb-2290f82ec405.json and https://artists.proofprofile.net/proofs/artist/9c4bbad3-72e1-4cfb-bfcb-2290f82ec405.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 0xb026a453002bc363afce18a9a0b5d3786b0c4cb3ae1fd392fdf28dea1cc0032a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES71G2246717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c30207dc134b40da9e7173d7e16e3a1cb95c767fe5c91a4fc086be414a0385d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:52:14Z), 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/ES71G2246716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093ba02cb17fef413e9bd0319336f2dcd92ba9627e1cd493863075648a5b0002. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NL8RL2324462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcd6d32e41528810d4e404eb98c9a14abdb903f923727cf43b18d38a832ad89. 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/FRX282251061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cd95a46bab1fedaf9b8495249d86850b42ed6571604b396b1feb03d95c978f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX282251066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e258eb260857ad23a91e018a077353b2ead06f1d9ac07815d5cae0f8150c733. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAFZ2278441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad21e670eee75b5b8ab27c382d8a9175f9f8359e251580a4bc0e384f86ebd240. 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/USHM21615125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd08a68defa50b984962ca2268b092b5d05b73951bea253bdfc9c84a68ceeb0. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:16:31Z), 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/TCAFL2180032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc74b1825284f439060ece03c672b5c30c6f2c1a2a8fe24baa2fc2c0018adfc4. 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/TCAFL2180011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b08b40b6b58363c1a94ac0f081f13e4bf86495eaae6bf69fdde888dc95a352. 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/QMFMG1529409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2464abdc9712acfb9e1c4c62e827426a76a855604ffcc294a2d13f251b9ddc96. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/SE6HN2229977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb85db13fea005aa79b41dcb8c57be98e4472da8ffcc7ea49b4d716d1775dae4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NL8RL2444909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9303b44a0b68837b503fe93bc7cb347cf179f0b4c5168c1204de53cb8f8cb36. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:41:08Z), 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/QZ8LD1981199.