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 0xa112afdd2a7c28ba8f7e795d56e96eaef35b26390a8b17e00e40af2c88da7ec8. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7e36e2b-4e3f-4a3f-839c-254e75676f26.json and https://artists.proofprofile.net/proofs/artist/c7e36e2b-4e3f-4a3f-839c-254e75676f26.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 0xf99c7b71dbc426fb78471236b5a4ee933a333d681883031ef359c649b3f2e503. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BXN9M2300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcb7825fbbb796d2e240f5d46df3bb235f69e6e3375bd67e06b135389a60dd0. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/BXN9M2300094.
Quando a chuva passar - BANDA EXPLOSÃO DO FORRÓ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe93bcd76a8232fe07bf8e5782ee9ef3b52580818598e8acceb38534aab2dab. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BXN9M2300293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8841cb30abf1e683f1bd704bceaa4218f71f0455eec112f3fecdda422f242d52. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BXN9M2300294.
Doido apaixonado - BANDA EXPLOSÃO DO SOM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa798604155fdb3dd4623421fda9a0f8a2ce10f30ae056a5a54f4ed76bdf93781. 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/BXN9M2300380.
AO VIVO 2006 - CURTINDO A PAIXÃO DO BRASIL
BANDA EXPLOSÃO DO SOM CANTA CALCINHA PRETA - AO VIVO
EXPLOSÃO DO SOM CANTA LIMÃO COM MEL - AO VIVO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cf27d36a17a08f8f206b6202859a43a83c0b2c4b3641278ea7a8aded005f4c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BX4E52262487.