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 0x35afb4438d20924f8df02b052f8dcf5ddcc4ffa9b9eee8b981b236f2923fa935. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa9a3b43-a864-450f-8a10-1bb9e318fa55.json and https://artists.proofprofile.net/proofs/artist/fa9a3b43-a864-450f-8a10-1bb9e318fa55.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Las Cosas del Querer (Original Motion Picture Soundtrack)
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 0x17a2c6c40019f1dbd5228839eacbdef2f0602878dc2008480a3a88651b9c0d51. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:02:07Z), 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/FRZ810807103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85086dc752707b7ebfc0c8f16bbe04f29b719d8d956b9f73c96df5933d12195. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/FRZ810807104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf341b5effa9e3bfd331ac29507899f5efbc133198db1b3ed89c7e3f7827a374. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/FRZ810807105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972e8318ba5c32347586217c1a46373baad86753c48698030decf52ff7568c65. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRZ810807106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab6a40e0091f6863d13aace5c429650af11def1091d574132b3f3868ffdd054. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRZ810807108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052b40766aaa33706a1965b13dbb0fb26f022ba2e6a7035126512f981e22dddb. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FRZ810807109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac316558dd65a326ff24571fe53b36cfe3bf2f73a21ec12d69c8b12b4ad13096. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRZ810807110.