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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdffa17345fd1943a00d21b56006801f682e375202d52d4d44db513206261db. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e757f57e-c109-48bd-9c8b-881c8c8c7538.json and https://artists.proofprofile.net/proofs/artist/e757f57e-c109-48bd-9c8b-881c8c8c7538.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20d1dd4288a9011284da09400413e4b099f6d99df9ccb779ee264b7e1c97a74. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/ES71D2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83851c71c55eaa38cca0848e1054150c550fdfbb034d4590da925e02a273f1c5. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/COA921600350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fabe3a0ed6c543614d35b02686ecd1a15ee2eaea30a709dc5d77d05e6ebd3e8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/COA921700821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802d91da274e2bc255daafd6d8e4c5dc7db81abf7756805d8c9afbc6c2789063. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/COA921600351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb411a0d6f6e0b74557ba0764ffa55e8cbace97a48f96243d3f87244e8e7e7e92. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MX3741500363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b637a98bad2088148b7d4ef4f61fc9c1db20356bcd6fa7e8cb70425a8b0d19c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MX3741500311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bed8033afe75b2c35a79218f1b9fa688e1efadcd90901e65bb16bfdf2e62133. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/MX3741500315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9c4b365a6d1608e67477d35e996e27065d73691ece619bfc239d66d1589218. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/MX3741500322.
¿Quién nos salva de los buenos?(En vivo Pocket audio)
El tiempo no sana (En vivo Pocket audio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104de6b0dc51270b9fdf0515147dcff1d6913a7a3446bcfffde8c93ea8b3bad9. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/ES71D2300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa965889a31f8bab1f566aa07181e0a157e50fbd9af50ca802cc0cc53e7efd1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/MX3741400974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948d3f839c0c7e343091c1deae448da28fbb7f5d786f543ea248d3a8670d1f32. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/MX3741400969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca01b1d917a0052956e875429d812f416b7e62a3a57a52bbc31e0c16a56f5df6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MX3741400970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaa3fd5832825b9b1db799ed3f928eb4f0d43d4bb92471a05b250ab77a0decd. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/MX3741400972.