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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012407cb52200c4b40fce8f0b14499eac7f7735286afd61428e1e0baf9837222. 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/d2bac072-9ca5-4251-82a5-17b899815204.json and https://artists.proofprofile.net/proofs/artist/d2bac072-9ca5-4251-82a5-17b899815204.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
The Fellowship of the Ring (The Lord of the Rings Lofi)
Secunda (from The Elder Scrolls V: Skyrim) [lofi version]
Secunda (from The Elder Scrolls V: Skyrim) - lofi 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046cf6533df68f8b4f5e81a9c73649315cadc02bfdc3528dd50d0e178b9a2cc1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2304531 — a six-check JSON result.
The Bannered Mare (from The Elder Scrolls V: Skyrim) [lofi version]
Solitude (from The Elder Scrolls V: Skyrim) [lofi version]
Solitude (from The Elder Scrolls V: Skyrim) - lofi version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c55646371e2eed5d8d65bdb8a66da630a624f14fecf6b22f55047a60553c2b2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2304834 — a six-check JSON result.
The Streets of Whiterun (from The Elder Scrolls V: Skyrim) [lofi version]
A Night Before Christmas (Christmas Lofi)
From Past to Present (from The Elder Scrolls V: Skyrim) [lofi version]
Dragonborn (from Elder Scrolls V: Skyrim) - lofi version