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 0xd27fcf23a51706b8bb90c3b1907b262161744b2f002004ec01555ef630f90da3. 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/74983446-6dfb-4c96-8adc-4e6e3036e55f.json and https://artists.proofprofile.net/proofs/artist/74983446-6dfb-4c96-8adc-4e6e3036e55f.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 0x4d36fa77e42ad79fe8be33a61e0bfbc576a900f50a07f7a5e862e6cea893d037. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZNWY2277055.
Can't Get You out of My Head (dnb Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05efe476e8f3c575b548148f938a03a1b40ee8b8d14d09f72b9aba5879f0a955. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GB8KE2418569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d999fd5cc3f6094bc6a9bb78842a9b6adde82ca9afe9d3040d41d81c06fbcf. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:47:13Z), 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/GB8KE2424889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f161046d259631551d5bca41874b1c8ba36870875e6469a17e2634e5f178d3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZZ7V2429296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44292f012b6e5884d32785ee66da2f77dc4566644f9f8d361db80dd602b4b9de. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZHN82554764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd19b214e879f6920c595c50435cd0641f65f7f68e14c6c0ed60206c635d444. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNWY2567546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3ccc3ab365945d2aefd00a56bd184fbbd0990a35f830ac34699097c5dee553. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:02:17Z), 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/QZZ772564356.