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 0xb7a0fcb6ea184af5595af2aa5e539f00a89c045ef439ed59ff6bc5e83e37fad4. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b392cf8f-50a2-4625-aa9b-d74d0e2404a8.json and https://artists.proofprofile.net/proofs/artist/b392cf8f-50a2-4625-aa9b-d74d0e2404a8.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 0x3eb7ef8252732561ce1abe9eaa42f3a6364c2d87042acdbd7704c3ff7eb0146f. 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/BRTRB2400307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce7f4db7e883a34de9492b9d6470ab99335e432e6b668a00496c9a13490d92e. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/BXKJJ1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3928d97fbafd677bbd6537d70aabaccbb70ff96e03d2d9e890cba321ad843511. 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/BXKJJ1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e2367d03bf242e91b35c376f813d92c7f258c181f33ab45cc08b31d62ff978. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/BXKJJ1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc14fcdfe67b66a1d8d9c45eb46ded4fca03e4940ac46a76b7fc4a5a95df479. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXKJJ1800005.
Camaleão I (Bob Mintzer, Jessé Sadoc, Lula Galvão, Vitor Gonçalves, Jefferson Lescowich, Rafael Barata, Idriss Boudrioua & Alexandre Carvalho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58d3ebf72f70f9721c305c8c8da63111274e158dc67d577b0a6a47a44c23e87. 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/BRC771200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186f61975cdc3cd64feba1c22bde2c84de802e4c7253a40c91899496fbc64cf2. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BRPVO2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fdaaf3f57848b267398d4aadacc590e223456ad5a7ffc342d7a05892e3b19e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRPVO2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb969b9de0f36a7aecc9b916d69747af7466897702155aa0bd66c4ab6b0ce9d. 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/BRPVO2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106decddafd8d051c8f2c27c91925b5d7e932f8ea59dc7a42d60fdc8b96edb80. 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/BRPVO2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405728c03cdc5860474109f62e1b5d50d46b556236340639fde29ce5161d1e6d. 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/BRPVO2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00429828d69bc53a3908af939351603845d0ab8e42474226ab50554134c45d21. 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/USCGH2329210.
Fabricando Fantasías / My Funny Valentine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507137b4448ce616861693ef918af6a67f699c21785a9a4b62f22932cfb2074a. 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/QZ7R42054195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8467bd5109188a3c7c1063946d6c1cf5f398b0b3a84354120f4f37ed263990. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USHM92106020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25139539d47aa8cd68db083e22a76bf53322f230200b7f19a3fc566fe5d12324. 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/USHM82140052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea23400c64eb978a7ba38058d26e89c3102eb948cf10d3d251a784f72bd83cc5. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BR33J1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fe7cdc1a6a8448bb11d45278834c5b243016ddb26e244da38c8137d6fd9bb6. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZ7R42050611.