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 0x27a11ec01887236c1bb1e56242cc65c96167d70ed1826f05dfdaaaff1a204666. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2c8b2e8-11f0-49bc-aaa9-757f0dbde1d9.json and https://artists.proofprofile.net/proofs/artist/f2c8b2e8-11f0-49bc-aaa9-757f0dbde1d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
My Dearest Friend (Undying Light...) [Demo]
Across Space and Time (You're Where I Belong) [Edit]
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 0x3b2b9407e97b9de4bf79a5f316675296ad35993dc9e667a81ef026f4cb573397. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZYHJ2451267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf797f86aba7a4e91e2b8b7dfbb9b783d446dd6450c0bc8c49ed1ab322427b245. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZYHJ2456217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992f0fb2d27dba98057017a695983eb750f887256339537a251c8292cda29bf1. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZTB72522345.
Before I Forget What I Can't Remember (Edit)
You Did Not Last Til Spring (Remix/Remaster)
You Did Not Last Til Spring (Charles J. Cliffe Remix/Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c3e14e6e547c601f47976f3ef70cc1ca1357efa10b171e258cce51c817f449. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZES72554936.
Across Time and Space (part 2: reversed)