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 0xcd9723d0abf7085de79c4f431b76a6299e9d95ea8f8809bf96b003abaa7f924f. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1c89e5a-8797-42c3-906e-108ae7a69b51.json and https://artists.proofprofile.net/proofs/artist/d1c89e5a-8797-42c3-906e-108ae7a69b51.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 0xb6258a5f845e5854599c623d086441333e3122d9d2f657698f1848dbc3853cb0. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:09:22Z), 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/SE22E2100101.
Mary's Place and the Odyssey (Solo Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291e36e9d136c8d914dd199c8d0ecd92a09314f20f03f0e23a04e48951df8826. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/SE22E2201301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa943b83ef7de12f001019d0a34edb85251e25ff5dc18f8475085056234aa0bd5. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:01:09Z), 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/SE22E2201401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139f207d65509908bd7b3041f56a90e01de0dfae1a3b7548e7f0291f9bd4989e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SE22E2300101.
The Benefits of Daydreaming (Extended Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732eaa58a836a91ffedf6aafc79b0d00546d8ef70c93e645da5996d22e2810b0. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/SE22E2301201.