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 0xc09f1954cb115401b4ec5dfe34dcf4e0638aca802fc53131da5ee52d168c3cf7. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa97f1f1-4bfa-4295-acc6-9779e27e13d4.json and https://artists.proofprofile.net/proofs/artist/aa97f1f1-4bfa-4295-acc6-9779e27e13d4.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 0x39081752169c7522779f50ff2a6bddfb969ac5e5b32d26f54ecf66d311af8dbb. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:56:30Z), 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/DEHC80900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375a1c40a26c07c84e33bce285ed790803e9c80ebcf265fe6abc12544d54dabb. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:32:37Z), 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/DEHC80900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec098f866871770b17e20b7267664c1cb0eaca17a50442d68ca8b510174a6095. 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/DEHC80900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ec6bd098f54aa2086bb69d91d8103ed3e71a0cce168713a4e74b4c3dc85f31. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/DEHC80900061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39d0cbc972814ae353e8ab5d9d23cb55aa08585862c7d99f5545f902da8587e. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/DEHC80900062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49df0928bac975f9dff662c23f85a9c585519da1b76031ef38e6aa3fbc52951f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEHC81100033.
Silenzio Cellulari - Silenzioso Muto - Single