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 0x59c1680b6d2c2f58a8ff5e8f81526105d5826830b33941166bc506050584b797. 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/04650636-0185-474d-bdfe-13ca61fc3251.json and https://artists.proofprofile.net/proofs/artist/04650636-0185-474d-bdfe-13ca61fc3251.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
REGRETEVATOR (Original Game Soundtrack, Vol. 1)
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 0xc95d301ae1835ef8bffc0afc313102e00bca40bdbce1e05a440327362de56521. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYZ2434904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09396bfd8a43f8fe4bef78fa845c26de3585c0cb009f5dd799541d448c0396b4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYZ2434905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8927eacf66f9df915d3e6c89856d01f482d6313aa2c22e52a5576a2a831185. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYZ2434906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64ec1e4f4ffea9ef08e9b1c89ff1cf01f9e33506b29f34273eaed69dda72f02. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYZ2434907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba74829476347422a687e39e815ea37a90a42d273af712b1e3a07e961b0ed67. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFYZ2434908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe223dd4c6f6b1f9b00510a5e78f6d789053c16b7735fb715cef5091383882de0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFYZ2434909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda325dc4bccb18e8d8918609471f6fc21374e436c41ef1cf5393b5106f00af16. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYZ2434910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bbb724d8eb42076402d4e0a184e224718b382eccc926a672e4f4bc362c90fc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYZ2434911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df33652d2b28f38f5dc70ef9ecf1f433664075d5029805a77d25dca05fb1545. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYZ2434912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db81752fc2c3b0180b21eea7e879fe7809eed3e0e855f89abc84e6433ba2be6. 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/QZFYZ2434913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7207484e3be385da5c0e7123100214c662317b6ce037d5a8322a3b1a9f52e976. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYZ2434914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfac9a1bf5c169de35c02c2255a53a33fe304baa648c8d92b79bb1be98f0d79. 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/QZFYZ2434915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1591587ae98b8d98e22684c9df75b40be4e112d9dc2516321c3e552d018fca. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYZ2434916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3a9e7d1a3c9ff77cfd778c243b36fede15cb1fc81d83390bd2ae29d12ed444. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYZ2434917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47702e2de0f081fe0e01ad9ae8fdde5330f28c6317eb8900ad7e49bfcf9a79a2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYZ2434918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594dde02ff68527d2e4879d75252bb9a9ef439912b44b032ea6d33f5989150a9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYZ2434919.