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 0x83288afa9b4f0af40401bdd72de550dc72a417068373c027adbaff5e9c778292. 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/c3d93687-5654-44ed-8d61-fc7d7124c3ba.json and https://artists.proofprofile.net/proofs/artist/c3d93687-5654-44ed-8d61-fc7d7124c3ba.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 0x3fc74adef8311348b65ac6870a41019cb45483f905b287419117c5d7afade064. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ESF971289961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8980b73d2ee3f81bca6afe7efe32503e1f532a55aa7738341bd779151274be1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:04:48Z), 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/ESF971289964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2816829513acbea668e1eba53d370b6591716fb102fff95e829bf7ec59f9c19c. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/GBLV61630632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b411b41e4677c6479f7c54b362735148fe2bbd7cf894b084bec3c7b97166d5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ESF971289975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5d3b0d5cee96e47777d73564340fd0039a8ab87568b5a149e3b53f0075b7bb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ESF971289976.
Children of the Last Generation ( Bennun & Healey Remix )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eea92eea3e57f69c3461dbd7f7095dd8f465f443107932b6f4939eda1e35a3b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:58:18Z), 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/ESF971289940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c451dd3448cb4d6a26d3562fdc3c0b5e5eb8a162ee3f68a52835272e75b042e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEGA22203640.
We Interface (Alex Stein & Victor Ruiz Remix)