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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda6bd6ff5eeb3903cee1a7dd801696e2e84d0715ca1b983b692edd7b5476a15. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07e110c5-7545-4913-8aed-cbecc8970680.json and https://artists.proofprofile.net/proofs/artist/07e110c5-7545-4913-8aed-cbecc8970680.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
When a Cowboy Trades His Spurs for Wings
Nashville / NJ Ain't Quite Like Tennessee
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57e754555718938f84c58ae80e3b65119eb147ad6ee94b28f6b99a4261476f1. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QMFME2371166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2e4359265b6c883e78ac7c976839b06b108b8392c1a40804b7254528fea102. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QMFME2371167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc4fadade047bcfd53ad0c9206a7553f10c25e94fa520a6e0eb191a7a98e266. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QMFME2371171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5afe6362f68bf344b03365de1dd9603cfadc5a4b7a306f6b5a29d8866f526a. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/QMFME2371173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77728671f3e9a403054b2bbfec2048b9746691519895273a5d26e2af26e4935c. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/QM4TW2555757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa962c11739802a19ccc53ef8775c11ea9c1ea5917a76a34e7c119c470e3b2e. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QM4TW2555760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1cd5d938e48bd5290007b8b0cac31ecf1daa328bb6d545375b21dcb7c6a32f. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/QM4TW2555761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa8ddf5964246a88277c7fb9d86b52acbe39357094aaed3d323bf3817cc4aa8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM4TW2555764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b40754a92900a15d938b4c3aae8f369d53e468d234fbee96ce0b55e15caf956. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QMBZ92441048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f06cb0d891fe54d5b62d8ea894ccc4d38c589a5cca7fd83109b5554a7e0a4d2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZWV32562482.