{"copyright_id":"0x41fb0eab77ce0f674dd5a3881f8e5c0fb01d973abed0afbf9fa9426e1bfd5f1c","name":"Tomas Villarreal","registered_at":"2026-06-11T23:28:09Z","symbol":"NIM0136523","token_address":"0xbfd83155ef2cf16efb1f34ead4b912bdc12b2130","type":"artist","uuid":"696e2ebc-dfdb-4f18-8537-6df735c7d39a"}
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 0x41fb0eab77ce0f674dd5a3881f8e5c0fb01d973abed0afbf9fa9426e1bfd5f1c. 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/696e2ebc-dfdb-4f18-8537-6df735c7d39a.json and https://artists.proofprofile.net/proofs/artist/696e2ebc-dfdb-4f18-8537-6df735c7d39a.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 0xa8504aaa43c72f7fd52e79a67014f561c31f525585c595a62df8b77444e5b6f6. 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/TCAFF2014338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2d4dec6bcd616bb849c7204f0adb3feb2bbc5e46d5e1f17340b8a2052459a9. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/TCAFF2014344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9aa0e976d9143452e8b5332e897752a2d5be21165e44fbcf07ba011ba12df33. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAFF2014351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7c734d50ff65e71c049eeab248c289817e28e5b6c7277cac406cdb33b94a56. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAFF2014360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7d31e1be2ea52ec76d808fd7431c65cc0e7b41e26d91263231817f70af1f67. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCAFF2014362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dbbf9488f8f9b3a6ec77cd0902a91ba63910efb9d959c1d864ea075fb5c1c4. 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/TCAFF2014385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda167adcdbb3da1d994790c08ffabeb198b85bc6202d6956e3424aed8b393a76. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAFK2187820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ceaa95e9f09e342d966fec769dfc48dac9004c60728ffbfb1580b67feb51664. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAFK2188685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c38046bd7716ce89abf2c75a56ab2ef9b703b27eb73ecacb6573f958aebaab2. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAFK2188691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d3556cb78337440475f10d45f4d5a3ef41e1605fc324c008c41239ac7e5563. 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/TCAFK2188719.