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 0x8fc135d4603462e346c6b325255b95bd496b280790e940e5e714e71fc4e53d24. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9356e68-fd59-4645-a6c6-c24fa6c1dbb5.json and https://artists.proofprofile.net/proofs/artist/f9356e68-fd59-4645-a6c6-c24fa6c1dbb5.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 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 0xdd5408d252351f57aa53d7f78160974ad5dd5bdde6a4de586fed274dd5d59527. 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/USE830994952.
Top 500 Greatest Hits 451-500: Rolling Stone
Top 500 Greatest Hits 401-450: Rolling Stone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac77e3616807a094234587f16d49c80850f252248487fca2259d845c9c5673a4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUMEV2171507.
Rolling Stone Top 500 Greatest Hits 301-350
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2b2ba737d50c239232644dfcb25178c6ef7b2fb4ff5d1d4b9ff88e032ae4df. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AUMEV2179966.
Piano Renditions of Minnesota's Iconic Artists
Rolling Stone Top 500 Greatest Hits 251-300
Rolling Stone Top 500 Greatest Hits 201-250
Rolling Stone Top 500 Greatest Hits 151-200
Rolling Stone Top 500 Greatest Hits 101-150
Rolling Stone Top 500 Greatest Hits 51-100
Rolling Stone Top 500 Greatest Hits 1-50
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2d26259eb50ebe9f910f36deb0802373a7989683fff46ae5c8b914445bb72c. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/AUMEV2269283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3c51001e9b0bce2e224cb1adcaa31f798de2ab3a55b79816c30faa82717be4. 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/AUMEV2280190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f9515afc2545c424179930bc45ed334d76ffed5529903eaac75b0b97e736ef. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/AUGBT2212786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb40f7b9253cdd284cab695839c844aa31364a12fbf840d2dcf281685537888c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2471159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2853282c8a835548594fc797cc665a4964642900692889031c271ebf133e9db0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/AUMEV2471322.