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 0x2c1574e27c6f2fd3f69f69472e9d0ab1d75a3486444d9d515bb7bee3695951bd. 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/909e6447-e6ab-4967-a900-3074b12402af.json and https://artists.proofprofile.net/proofs/artist/909e6447-e6ab-4967-a900-3074b12402af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ven Ven Ven (feat. Emilia Vega) [Special Version]
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 0x61d33466c9a707f7edd6b6df9a09310d07216ce01cf528e784ee72c24c990620. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/MXB872100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1d1f9ddf3ada5b3c0e48769664ea9692e00776a7ecefe4a493fbd903125895. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:41:44Z), 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/QZTBD2373463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1e6b4701a2d7910720e982db01acde669b6fd0e051f331d9ef9656b71c551d. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:04:20Z), 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/QZWV32454141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55361c26d6e3b98b7051666ca0120d5d34441848934c2b6b6bb0ba922862d314. 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/BK4DA2462060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6d7ea7e16c61709f692b92b8cad5108dd68501fdd3138d1d79a0fbd13966a4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/BK4DA2504479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716b892e5a0212b92993fc9c65ac26aa70475291caa7d93e4d4b15382bcb757f. 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/MXF172528121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3768ee47a74c07469a907443a769b124b74945d41a115644acc6a0981025423d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MXF172528387.