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 0xf681fc3ba56104c07192e37dd4cf9dd449341eadf2b0480f4d3204da9ec92863. 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/97c0d62c-45f0-43de-b6bb-1b10e2c5834d.json and https://artists.proofprofile.net/proofs/artist/97c0d62c-45f0-43de-b6bb-1b10e2c5834d.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 0x35046edaf49b82b6ff81466cb5b8bfb7dabebbc405125ea42f86968c0070a014. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAFZ2249317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2fcfde14499a275e7a0a7f3ebc0f65451c3cb3adf867af9a658ea1b57703b8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAGB2211438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198cc7b7d4fcb0514780c3a7f0f119eeec9d5328df2153bf72c4ff2c22035566. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/TCAGE2292486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44097d09c9bab5c2d722debee884ed7849b81f75d3e79652620ed94c2f078c6. 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/TCAGH2292174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b65de707b0d00ad0ef2dba73ef449fde733e004a787dbdc1754d7555a875ed6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:58:31Z), 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/TCAGH2282089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdca7d8fa675d6ac3f62fce78c03ea864df399d413616a28c1800dbc43a2ef8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAGN2240529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412558e51539396caa4fd9b23872da8d1a6a4dd523c95bb70964118f711479b8. 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/SE62M2286654.
Acoustic at Human Rock Life (Live at Human Rock Life, 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15c41f4a8ebf7f960d31d9ddb81db32656a5746a6671fae9e5582a9c0afcb66. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/SE66N2360202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727ef7c334f9b7179eefd6b541530232d2a23a7b0d37df2ca210f5377a3410f0. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:04:39Z), 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/SE5BU2437215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597402ebf5cc5fe2a2143584b8cb70027197e2be5fbc22cd8b39e2737b72a258. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/SE6QE2492001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597402ebf5cc5fe2a2143584b8cb70027197e2be5fbc22cd8b39e2737b72a258. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:22:28Z), 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/SE6QE2492001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae9658792653badb6ccfdf49a7391e2e6e18b33863ec4a257cd1c0fb3d8a198. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE6XW2538518.