1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3fc709a195369fe30226bdf5ebddbcfb23cb5b8da2268f4e55b98c029cacf673. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b60adf8-4c9f-475e-81d5-b1a85bab7f13.json and https://artists.proofprofile.net/proofs/artist/3b60adf8-4c9f-475e-81d5-b1a85bab7f13.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 → block OTSBitcoinBlock must exist at that height 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 0x718a5dbb0e33c7758e79b381183d58713e2865abee7948ae635f679209550130. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USRO29027507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99e2642559b32d5816364bc8b315c6ff73c2f8132545ae07f360b4565f01dd2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USRO27810112.
Joe Val & The New England Bluegrass Boys
I'm Walkin' - Live From Kosei Nenkin Sho Hall, Tokyo, Japan / April 18, 1979
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05822155ffe024edf8f95dc120951e9bc07c9711d0648e4adee70a7e09b8ff66. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/USRO27100604.
Al Jones And Frank Necessary & The Spruce Mountain Boys
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6692f2b92a6fb61b10df41f9c0be45d6d78b9a1007efd7378c382d4b8843308. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USRO27605304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a5479f2b39d0ec770417889ffcf18b3fb4a5593f11b661409543ce0ac478ee. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCABR1374759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950126731dd587e194b7dadebac6a37e4032c3dc1fd2153ce6bcc8331cf88bf5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USRO28013003.