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 0xfd6cfcab36cc8b1bb8e9c7bf60e3da714768403d82f2359c352dacbdc0f34b8e. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9475375-880c-4ebe-9b38-f2e9cb640a31.json and https://artists.proofprofile.net/proofs/artist/e9475375-880c-4ebe-9b38-f2e9cb640a31.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Y Que No la Alcancen Mi... Liebre Norteña
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 0x07b3f1df666b13eab4f72a998d4492c53b4063052287582db67a54c77d2f1d25. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USCGJ2046343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0ecdad2c6fefcfb75be81bcd6ec7a54cdc38a02d066fd49e94584df9cbcfd9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USCGJ2046346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53061997bc9a5b0e687b0e4338e711149345998e1cc1a19c7aab05b7336d411a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:40:39Z), 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/USCGJ2046349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79564924a3e94af7409fc56091db055fc9cf6f93c905b78d1d0b32de91680fec. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGJ2046350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5512e8c3f353c0e62878a7df431f6a63c937895be7beb3899c5d1a9e50d6d6e8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ2046351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109a78511191b4443cbc91d5cc9fbe9ae21eadf3b21cd7c2f9cebe3b8cf50c8e. 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/USL4Q2090963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb140b2fc360566478b9d0cbb2a4a5eb6fbd88940f44c646e44565577f8fad685. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USL4Q2090969.
Te Acompaña En Tu Dolor (En Memoria De Uds.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7f351eaa7887a77647c0db6ef76f29c431ffd6801d95bf651805ea8cfced67. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USHM82182114.