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 0x5ef04dc242ddf44c601b423f3c52890f8c22ea5bb5f552de93989ebab557745b. 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/fc4a5f69-3399-42ad-9e45-221fe5f837fa.json and https://artists.proofprofile.net/proofs/artist/fc4a5f69-3399-42ad-9e45-221fe5f837fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Patio De Noxo Presenta: Prok (En vivo)
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 0xadb155694fee2b7a64541b7cb059a01dabc2afb9539397df9d105c8458552db2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZES52440434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa0afcda65c009dcf5315186c2c2e4df2a619b1db77c6427f0307c1fa435330. 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/QZES52440435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16697a6cf32d13c86ab523b79f457a223961532d69fc21154fe70969791892a4. 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/QZES52440436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62ffb8d49c327e4a09e9c34b884d93f9313c648fe02e1b619c4d1c05bc647f3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA82596889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299ad86d6b8d6d95b8596b9f08fa0d1c48806c5c4f09a923d1e6bac1ab551100. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA82596890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33a0a4f7264fc89edf80e55c9e5c1ffe386002e7cb76948311897a86a4b2b78. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA82596891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9c1d630f77a91caf11412ed644e122a2bd06d500fcc059855f73e159c323d5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA82596892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221f19bbc2316327363afd62b840badbf374fd230b16d642229190b51e736e01. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA82596893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc802adfe7ee7118bc44737879be2ea3cbc99224ad9acba124254bccc1fa597. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA82596894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c87683d448b9affa33b2461310ba2674efa6e54cbd32eaa5b27f1961c45e63b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA82596895.
El Patio De Noxo Presenta: Akapellah (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2497b0cf54e2407981ebe882b6e2fbba2606b5caf044cbc282e6014ba8c4f3e. 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/QZWFP2354577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2272106f8bd110425f5e8b05706850ea6677e5fcb188bb19c2f2c21e363121. 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/QZWFP2354578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d81a25f62f2a4525d6e63ff5c53474e5d35ff84a4794760193743bda90cd37b. 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/QZWFP2354579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a01d9106fcad0790707341dcf86d251cbcb9783aa79692997880bb6a854a88b. 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/QZWFP2354580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29970b0eef641a4eb3583b44a718a94e1ca4c2c3075a73e7252c26646e5a8baa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWFP2354581.