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 0x87d717a21b41808fe75989c976f54210d567a9e367684a6ccfd776501c90203f. 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/59ae570c-f47f-44e7-8f60-98a088adb070.json and https://artists.proofprofile.net/proofs/artist/59ae570c-f47f-44e7-8f60-98a088adb070.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 0x16d16de00b1c435fd65673b55bd3aa1c6a76a6c75679f5d74a3bd38bc311f312. 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/MXF018400282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0819b8301c41e860d8b28bfcc933fc8f5cdb9718adec99939823f1652807b8e3. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/MXF018400091.
Los Amigos de Mis Amigas Son Mis Amigos...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf3e9e82593190ceb3b2360ff7d494f8042fa77909e08380884bda31f95cd08. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:22:33Z), 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/MXF018901175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d8deba41fdd0ecf1c53818610b0612bb97cb4bd2b5eb99854b40c105e851f1. 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/MXF018400290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4ca1030a953e2e25cc3903f66fe378e33056dc1f074620b6986862d1e0b92a. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:15:59Z), 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/MXF018600248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efd6bab50ddbf865eaef0f9551477d612827a4013bcc61cb98503da24befe2a. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:05:42Z), 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/MXF018700757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fd19c541ea17496ddb74384a15e146d78b157010f86a97e4daacba8238d827. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZ2J21510830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9102277acf55560069ea1390f0ce75451a219248e5dcd0edb480ecb14095abe. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/QZ2J21505347.
No Prometas Lo Que No Será - En Vivo Desde Teatro Metropolitan México/2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1767a5d17dbadb1c8eadcc31e5914eb514d113a17f442971deb57bc04402db. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXF061300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1767a5d17dbadb1c8eadcc31e5914eb514d113a17f442971deb57bc04402db. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MXF061300056.