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 0xee330b9019df4f1d462e4db02b244f496bdd92f18c4ee335274300904b35b8fb. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/272a88e6-9b04-4d99-b8c4-b82b2333c34c.json and https://artists.proofprofile.net/proofs/artist/272a88e6-9b04-4d99-b8c4-b82b2333c34c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Subaruins (RIP SUBARU OUTBACK TRIBUTE SONG)
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 0x8dc56dccdb06252953edd693ea65cceb999e607f4e91756ed2c362b9e6c3c772. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN52116613.
J.K. ROWLING APOLOGY TRACK (I'VE CHANGED MY WAYS!!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00332adcb5901914f8fb4cf00f101a5688b92f849da36b288c8735cd7430433. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHNA2559959.
Obsession Devil... I froth at the mouth like a moth to the same door I stare at every day hoping it will never open but wanting to leave so bad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f325e4cb56734c452db7716970086c8dc18c1ff46bfc9cb407744b88e15860e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWU2560540.
Idle Transfiguration...now i know you still loved me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0195a479ed580ebb31ff3fa7408bf2aa78b8ebac0c5d91de124ee4f7ba89e384. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZNWU2560541.
Just Because a Trans Woman Made It (Doesn't Mean it's Hyperpop)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a7e5e0a4da1302689f723e9d13f2159207b453d8087f0301610fc386693270. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTAU2596069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a2b067a33b755673bbd450c4e16fafccbe3c0a6f7ca57ca81c6765537dbeb3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ52182507.