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 0xfbdd9dad906f9ad3a9529db93dcf0ec7134c0aa9edcfee32edacdc83f3313d64. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a869ca91-49c0-4ed7-8183-94a8b7b954da.json and https://artists.proofprofile.net/proofs/artist/a869ca91-49c0-4ed7-8183-94a8b7b954da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
You've Got a Friend in Me (from "Toy Story") - Guitar Version
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 0xd79201a8999be7df4daea7bc71fe5f81aab400150c8dc5cceed08063140c5a21. 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/USFV71010293.
When you Wish Upon a Star (from "Pinocchio")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfa946ed452c69b790d186b51fa94c0a84a88de4b9c6706faaa5d54079f4d84. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USFV71010294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b291b8d07c2fc6f41dbba2ad5b097fbd2643805c52cdd975017915f98511c69. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USFV71010295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48d58809b8830e1ce6b1e9777acdde9d1d5b99c2e3820c95f77603123389a18. 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/USFV71010299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7cba677861d4cc6ceb3c13d416fb5382b1a1856c2ef566d9c5ea405f8bc3c6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USFV71201792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9815c335c1d507cfc177f80a3ec4d4de3079b3ff1086aac4dc28f4f2d3f3f911. 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/USFV71201797.