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 0x68b5849e1021f3ac7e1a26a86275cd71e77a6f65c8ff495f2f807eefd777e22c. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9be73363-2159-4410-9550-d036de25b3ad.json and https://artists.proofprofile.net/proofs/artist/9be73363-2159-4410-9550-d036de25b3ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
História da Minha Saudade: Bailão e Modão
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 0xa79dd845dc443f1218c98a3a270afe9d6d2a99d3bfc194bc30991c23970e441a. 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/BXNT61900064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29714e1ee249f1b8b29733011da8bf131874e3eda91604306858311777603bdc. 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/QZGLS1996829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85cf7f8a8f27be6e560e22de3f6bb931b7cb2a1fa0bd79f8e558d6513a63c3b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZGLS1996830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7c44d019e9e1554119d5f8e57c5b6a400ffcc4feb0b36c9a9b1aa818a4aa6e. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZGLS1996831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe180cd267b80f34e1a0069bef4cea346bb6bc86af69266d19121feabdbf3bc12. 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/QZGLS1996833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10408fe8eb114468f5e56048c6538d33c498882b9cbda70fd2d75560d50bc8e. 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/QZGLS1996843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf87d8fdec7cd38adf5233114e461ff9420829d8991c6f521912fa9d16f09989. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QZGLS1996844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd98bc5940d87287949669c922a9fc0e45fc117cc33352a221756ad817ab9bcf. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZGLS1996845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f05aae9300a98ae61d5b07ca95817768ec63d8c3a2fc42e75f6b4316c0c02e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZGLS1996848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3468bc60648e88a770645a8d1e18d9ec3f4f5338d40f77a95ab5e7beb8a80209. 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/BXNT61900072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5327ac0f096682265be309057aa53321135a259df8c2d4d673deb9a1faaffc. 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/BXNT61900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff86c2d5cfe3db80f80ae776c6d4cfc579dc114380842ec68836a4482949ef8. 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/BXNT61900078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de53a1e40be14f058c1f5cbb2b2e28a4b5b3174f53bee05c162a81ec57b2dec. 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/BXNT61900080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32254a22f65c554a205b178f598286ef10bd10ab18f1956d504e105f541000f8. 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/BXNT61900081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62968338b1a1df2f741294f48555ee4d164128549ccaadcb6631bff680f1197. 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/BXNT61900084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e10d326e6d3eeb581dd7c59299ca2938cbf75a41df7f06f084cb9703705e6c. 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/BXNT61900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b27ba7b748cc00fa11a54e8640093deb8fa26ce409b870b51049d87b6cfb29. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BXNT61900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3686985a06d1093539bf189426dcd91ca294acac87c037757a876307784e0e. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/BXNT61900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c73e6d360d91f68c7d49ff3daf9443ec12e9d0696d1ae5c0c019d861e475672. 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/US7VG1938601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0b631f5b840f1362bec14562810824769c721128ca76ba9345a3346ba744f8. 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/BXNT62208865.