thumb|right|250px|Live concert in 2015 Los Peyotes is a garage rock and surf rock music group from Argentina, signed to Dirty Water Records. Los Peyotes were formed in 1996 and take their name from th
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 0x6845828d926cd55475dc9651de65014c4185068053fefedd1d7f1040eb8b91a3. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad6f01b6-5cd7-471c-9d1a-9904a92ced3c.json and https://artists.proofprofile.net/proofs/artist/ad6f01b6-5cd7-471c-9d1a-9904a92ced3c.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf445565fe3b75e991beb57bd9fba61a6fd52195837a28f71995d65f6b54e4047. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:48:34Z), 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/USCGJ2102862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa010323cb28fc2a2d1b660e92c66dd4b81fc93a78d59c93e07ebdec292a9eea8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBHLW0810468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ba2ce48a24ffc5c31f705d14db10dd1f69c0ac4b4001f4d03e241e883d5310. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USCGJ1801915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f165349ab65daf1dcdd5c266bc4f24f648dce631eeb96021210f4ed197f377. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USCGJ1801928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624cc89334af44a03576693e0405c6f327ccfaa80c33e6a7d0776cc308dd274c. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:01:51Z), 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/GBHLW1010728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b6f6de092c45acae2ae7aaf4d6e0501809ab0f193ea63b308df7336f82e3fb. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:52:51Z), 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/AROW22200001.