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 0x84c5881da66db278201faa265cc7bb8361d4eed61b048d49ac1f70910209eacc. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a314d0a8-1d58-4170-b315-467780de9687.json and https://artists.proofprofile.net/proofs/artist/a314d0a8-1d58-4170-b315-467780de9687.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 0x19d457e645c4546b95748d44120208ca2d86fa2ab12d8e2c5406ef9b049f9fdc. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:49:51Z), 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/QZFZ41905697.
Hoy Mientras/Loco por volverte a ver/Te amo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277aca2b505dbda238ac4de5b0bfdb1bc0ac7da660f7b7e1984cbab64e0638c9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:05:17Z), 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/QZFZ32293711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02454fc0a2b0647fd00e8adc1b37aa3a2ecbf50c936b0801ff03738310fb0915. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:22:28Z), 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/QZHN72294088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dffb5bdfb049d6bcef9cef0939c2361885586fceafa85c490299e0a7561120. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:05:45Z), 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/QZTB72261590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f518e8903460fa6764b2ed9f72e222a006c10c91144b2b7154d27f31060c9d. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:26:42Z), 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/QZTB62311539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a0271aa3177a9d8be4f6e0f56f4c75ef17d902f2d2275c4dc7d9dbbc531fd4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN52485668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001bd36b6745d0e55c9fc86894fb188893afa6862c9fe2628d7c2188b218578c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:53Z), 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/QZZ7P2543814.