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 0x58d4d257f138356b5cd2f217113fd29211833f564c64f7a2b5c32b76e4109bd9. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a3cc9e8-c0e9-49ca-823c-ba905630e69c.json and https://artists.proofprofile.net/proofs/artist/3a3cc9e8-c0e9-49ca-823c-ba905630e69c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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Tranquil World - Under The Forest Giant Of The Rainforest
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 0xd9fbb0890d0f64179b4eab9f1913c92f324670ab1d2154110a10df86de17ec88. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:02:47Z), 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/DEBL61405917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8be851e50abda6e438ab82d94de9745215d18bc9ca24ced3c8a21800e22bf0b. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:51:30Z), 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/DEBL61405920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d76738d6b812f905bd94d73b1684c5ccfb5fb9a1094ef745f8d8af0284336c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DELV41701862.
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