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 0x04c5da0eb63bd574518c41263c6b3d3402c78e05b458a397fbc56bc5ea539c73. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd93d371-d13b-4120-b8e8-ad136beb5c78.json and https://artists.proofprofile.net/proofs/artist/cd93d371-d13b-4120-b8e8-ad136beb5c78.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 0x71f6d2d1c2d7cc698981d400b0241657cdeb8989e1a092a95f8ff70136ff4b02. 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/SMRUS0069668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20fe2edf2949c941402bb6e9ab6a087cb1dad79b8bf2055ae445cca7f4d4521. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SMRUS0070108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52f968c6981cd5f791e13c4a8536107f126de9cac3544a318ff29b49936b502. 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/SMRUS0072067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ebe857d11b67f2dd45dac78321f81d4ae4527933ba910ab026791b1db792d8. 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/SMRUS0072389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8658a7e258f7959bca5acecd7338ee707ab96040f497178bdf9fdae2a9e65f9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SMRUS0072390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda507dc69e9e1fea9f07a255c9de89632a778d4188c685cd174ae8367f02ca6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SMRUS0072391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799762223c90165fbe0d146f0e1afbd07f608e8e98ad404423716b4c592618ce. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SMRUS0072392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896003cac820e420f00534e23cd48ec52db9bc54eeca05264ca14ba0a4c29c99. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SMRUS0072957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59d87f682dac77a2bfd89b57dfab7a0803c2e8caa8674e08d6c9b85f65188e7. 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/SMRUS0073885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf560edfd91be06f9bc342718c5cef5e6747ef363e35a15938e6c76d42d570b4a. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/SMRUS0074195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9f2d0bf58db3e1c0edba5966d19ab816a77a09639cac39cded0c20fa417823. 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/SMRUS0074622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc413b1d10ca206b33201f0ef0dfe04bc164e02360098a4abdbbaca1aeb512683. 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/SMRUS0075038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a74fbf9e9c2931af4802ae11aa72abc0fe571140a577bfc03a5d399c784f2a9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SMRUS0076473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5437a57e4041e343a261f4d228499e963a20cf4d69513caeb1402f603a53a093. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DGA0Q2351680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6c9c99a479822a0a5250ea25024a995073a1ad7f25623ee11b975541665754. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X42422665.