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 0x24059ed6f82849b6988b4896a8f8c12eec3dc02e33f2566be99399754b7992c1. 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/6ec19482-ecbd-4f3b-b31f-5cf505be14a8.json and https://artists.proofprofile.net/proofs/artist/6ec19482-ecbd-4f3b-b31f-5cf505be14a8.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 0x7242b7906672f9ce102e32f58d55b8143ea740c7ae1a42b744016ccce8128a17. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ESA011989219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5b9aaad09c1eee9ecca55832263d99933ca4a6925f235740fb4c6d04560e7c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZ5AB1805577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca12d3abbbe67001a28a76eb76a6e04407296e4d8ad5828368da51527d6576e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZ5AB1805578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea6127a7c8a87da9a621f6c23f32177ec6a063536f0beaedbd5a3b6778c7dc5. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:35:01Z), 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/QZ5AB1805579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adfa98d6e58deb4f5720ab875df8f3ae3b073a5b036a0454a9a38c7e6bba47a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:55Z), 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/ESA011900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe549665e9b0890fd024d238f10f90f5e34c0ccc6da5a780de3844e0b342c312e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:47Z), 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/ESA011873398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd394a8b10d86153dd3dbe1aebd758c5cd494afb225fd119d0755645cde803213. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:25:37Z), 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/COAF42290836.
Cuarto Grado En Letra De Otro Salsa Urbana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd596da724a71cba62355dd86e576f09b83828c257573429ec4ce5e8f9f5e8cbe. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:33Z), 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/COAF42502809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b218b81845b041dd2f23840b4d52af989a7aaba92b04e4db2a3776d60a7837. 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/COAF42504579.