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 0x0719139eff4f47ab90a1601d44a9f9116e8e51f952fc55074c9aec245fa2d4c8. 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/96f77689-f0b1-4cd6-8e11-383e57812b33.json and https://artists.proofprofile.net/proofs/artist/96f77689-f0b1-4cd6-8e11-383e57812b33.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 0x8abd360100b25c5815193674b66226ba296a90c8cfca72292e182e4a3b7805c5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BXBKK2500076.
ImaginAline - Uma Viagem no Tempo (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd294981430ec1223926c7bdbaac1a64cc9f51c21967836ced1bd5260e6aec2e. 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/BXBKK2400028.
Pedro, Tiago e João no Barquinho - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de64fa52fe4a6588cbe1cb0293145db803578767af51167ee4598bd4c79e7df. 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/BXBKK2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980b8f582652e11663523e2b9991db69acd8eff6e773138d180ba117beec2730. 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/BXBKK2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66134d0cb50f7888d06d6a4e6404ce37a082b99e38340a6fe8792249db1b31bb. 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/BXBKK2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988105e62d33eb6cbe926cc80c269c9ccbaf8c5c72de63ee8beb3f51e2a975ad. 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/BXBKK2400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b405fdc7d30f3d11c638e296de935ac4b258672de0e902216f7536702091f54. 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/BXBKK2400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c50bfc6396f64d89acd59f5156ff90a59446d347e7a06c8281f3759f0bebe60. 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/BXBKK2400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294a497aecfe580bef0468f66a64681eed683dd6c5ede2d7801833a9e24eff30. 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/BXBKK2400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c7b8ac4cca298d46b81781edec5a558e68cf9f0eb5697356f566bface9ddf6. 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/BXBKK2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9f1af8a3424a15ebfb930fed67361fa485030ff470605f34b5371c1b744879. 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/BXBKK2400031.
Imaginaline - Uma Viagem no Tempo (Playback)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6f8cec076cb9f4271c63cee3883187fb575a2bb649c074432be59b1b4ed4b0. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BXBKK2400030.
Pedro, Tiago e João no Barquinho - Playback
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfd2e008bf4355ef0496aa78e52eb46eb225dc674ee3c930930ccdc576be783. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXBKK2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf129464d552ba3e0b14f4ac46394fd62eb14ead33a98ccb475a48790d6ff96c0. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/BXBKK2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874fc21d9d510a708a1c8dcb56998a821a8ee1208f8035db6b19f3bdf93bb4ad. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BXBKK2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bc198e25bc1ca2f4d234f8b4c862c1f709db7993a26245172c923b6cdcb6a9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXBKK2400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4063f9aced1856082adb9a3dd0cad797c315c75fa659baf3712bafa59b77a970. Chain 2 (Bitcoin): anchored in block 956995 (2026-07-07T04:27:57Z), 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/QZTVM2473804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3ff7f55b72ef6e479b56ac318e02d9440ab8811bcf1cf5bdda93fc924ed3d0. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/BXBKK2400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dc50423d219d4759f0dfc70ec448b1516320ace53261d86d59021059a3261b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BXBKK2400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657c38d466d002edbc01efd6bae86ea847cc9e67da97a5841363619226cae56e. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/BXBKK2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa190f4b72b061c93e88b1bdeefed1ea2bcffad16e1586e93f652a81a79c9a000. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/BXBKK2400033.