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 0x936625325c840f5081e2fdb063a09e4aebb801ae1d40df18f790fe31ecd618b5. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc071491-d6d9-43a5-9972-3fb89d519e66.json and https://artists.proofprofile.net/proofs/artist/dc071491-d6d9-43a5-9972-3fb89d519e66.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 0x222732a6d30c219cc3d059c7b5d4be96bbd486b4cf7e19578c691a2476e93c39. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QT3F82578919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd343745bf9e55d1d872a3eadd80720e0a7a8f125b58ceb5e288458adc0e092a0. 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/QT3F82578920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd79644df0abeb8cf32a05827ae782ba9156391bc9649107e854fc4cf46b584. 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/QT3F82578921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8d96ddfc7081113d0a728ee4b68862258d8e406a59c140ff289d6bef861eeb. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:40:01Z), 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/QT3F82578922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152d26bdaa895cefc16186ae8ea42e45ece97ad8855ee5f858e50288f5eb9627. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:04:28Z), 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/QT3F82578923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53484b22e9e2d94270f66b3fc16ef191c3955a7bc6053d6460be3f9349e6a787. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3F82578924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4ebaa964d830413832420d32fed264e33e9662000fd2bb4c0bada64b78c18e. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QT3F82578925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13285fb4dd530d21dbd7067402ff94a735dac71e1ec7b252fe4406c94682b343. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:24:30Z), 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/QT3F82578926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6a3addd162af942bde3643c029369b7209ca9c2272d9ccee2a97c12a31b0de. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QT3F82578927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f96379bc13c5c91abef14ab5728b38d022e0e6427c8ef7da1ba988c1c53c0f8. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:13:51Z), 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/QT3F82578928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517ed4d03c05cc838544c19788129aaee72a4e349eea46f032100a2b70e5811d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:22:07Z), 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/QT3F82578929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd77f055967751e09989c4fe6be28d5d4b07d43ac8ce458610822cd0184a1fa. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QT3F82578930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50280c8596ba0540ab1c30f7438dbdfac7f0f3e0ec856b9bcb1f65d04847487a. 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/QT3F82578931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a316b12279c62319c70c0253cbe3ea0119727c56b3f7f4579a757e5d256d61e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QT3F82578932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d6c9a318b0fe074d3cd6d5397618858c6200a9c18f1f4b6d337822eb7fc76a. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QT3F82578933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4d95179a99843d3c0f19cba03eae28fdc4451d2d8b8a024ba217bd1a3007a6. 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/QT3F82578934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dd7e75179cd4bce8acbd6249a8f32293426e80f2fed867545d08244fb8bef0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:58:03Z), 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/QT3F82578935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952160a4ae71667d89dacb0819a785fda39042853a1670f310e316b3e827ca8b. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QT3F82578936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90e66cabbeebf0ed35f99029ffc3fbd4dd22e455df57a0312cc8ffd006eb85e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:18:30Z), 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/QT3F82578937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf0eb6e9aed944911ee70f5283be2e3e87fbd84e68c02415201c9565a3b19cc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QT3F82578938.