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 0x8e4b30f8d83656de7381b724163dbc3ef6c795eed3c9c8e4b7d501e65c213d66. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf6b97df-c342-4f74-a6f5-12353d2ff223.json and https://artists.proofprofile.net/proofs/artist/cf6b97df-c342-4f74-a6f5-12353d2ff223.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 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 0x7ba323572cdc4b8ef4402557b7deca7112f4e1d8f750a4d60a64287583793279. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QM24S1823820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a92ded70e9694abd2e437c7f9086201bf74b1e704f5ed4e8d1edeaf0ca9eefe. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QM24S1830938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c5b80b39202f62fe93f2b5a33648421f8ecdd1975f8dcb9e22f93efab6574a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRU701801053.
Operational Interference (Inspired by 'The Outlaw Ocean' a book by Ian Urbina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc090d1c239ca39afe4bf6fbc9e5f67139256030b9e673bc19c47a8222f0e581. 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/QZ93L2000535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089a55e9b4a63d6661d42dee87c640ece22c2ae075a263c5f3cf0f492c3e07ea. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/GB2DY2200615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2a85112038c3f6ca787c164f180ef9858ead5e35c17c8f1533367f76c60ae9. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:04:25Z), 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/QZTB72322116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f810b047e202d6bb9d3afbbc082e127fd42f33d12d95feb6c4b2d2104e56908. 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/GBCFB2301000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd2c119edffc7423487e8871fb39fa90c88698470503a2c582daffe37064e41. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBCFB2301002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9112b323a5cf21e7ab64413178f91870da4dbfb111204926c0a248b6f2baee4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBCFB2301003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cc0afa6a6c7e85376a0610c429e9395470230aa03c5808141b228818d9d118. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GB2DY2100215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adc27e3371371bca6fac2abc9a51c5b5350be2078b606272224868802d613f7. 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/CAUM82000176.