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 0x9a82315189ade6eb5ce02d779447ce2896d1b21e8898027ef99eca9a31adb707. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1befe4e3-db80-44d1-a2d5-37958ce163e6.json and https://artists.proofprofile.net/proofs/artist/1befe4e3-db80-44d1-a2d5-37958ce163e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
My Heart Is Broken - Dj Quba & Sandra K Remix
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 0x16620c314c4a72df0e53c499b699deef8ffa6d787495b3d01bd8e9f98e402de3. 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/GBKPL2014292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890fd7ea9cdc89ad292e4b76e223ea7a59f7f0440d6770d949e5add75beda46e. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:53Z), 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/US83Z2212976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c877d039f49f0585a9f5bb855a643f87838efd495171dd21d8809b4adda4b8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US83Z2239067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc6722c5c109d71c40b70a67097659730111554c2cdf81e72a97e3c014866f0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US83Z2496715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7734588eac7a37230a5352360d4ce0c46f745d109ba22fb60e4c6e3e1ba628. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US83Z2521517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0314a38e15dc1742249b26c25a883b5de04066ecb01b4e67dbbbde7300726204. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:49:45Z), 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/US83Z2550574.