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 0x15fc4fbd8936250143e65f081858db0b9716adf24a06bda3a573df6a5409e403. 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/8d1b40dc-cc02-4ad8-817c-6bff64860264.json and https://artists.proofprofile.net/proofs/artist/8d1b40dc-cc02-4ad8-817c-6bff64860264.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 0xaf85563c31c20d108aef8dd2f149d0900220f5b7b566bf34d762aba5d1eda018. 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/BRENV1200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcf2e8f7124f38d8b56f7533b0d6f513c5c52b616d36f897cf1b700e33d7add. 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/BRAPI0000359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1789d545c7ae48388af0d82c6769c96200ded77b13695dcd1e96ec0014bb7207. 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/BRAPI0000360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfbd6d2e17834c074c6dc8e1489083e2465afb511dd72a51ae5b85876cc74cd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRAPI0000361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb1dd69cc6ac6db57fdd04fc05aba823727642387ebfd202096aa66d611dad0. 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/BRAPI0000362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e07a4b5305824ba92f920b734be639a52bb0e3347a184d0d36a334e595cd22. 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/BRAPI0000363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb652dc0a9ac812b3b9985e459e25d323832ba39a6606892505f223a322c6451e. 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/BRAPI0000364.
Pot-Pourri: Saca Só Que Rolê / Minuto Informativo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c58cb7fc8f8235a453e7bfd4d93474796477d99ca8e8088d207c89c0f6fecf. 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/BRAPI0000365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bdcff4f8224eff76de9aa194a3759fc1395c01ba6dd37c6fab32bcc1e2ab79. 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/BRAPI0000366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af5ee73ba3fec7cb41bdc3a8b86d20a0b3a9b287f69de410f503ac567d6fa2e. 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/BRAPI0000367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa48e002786eb8eb24fdd09121a1486227a6d5b05cf48b19e02fc2d98fdfc8a0. 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/BRAPI0000368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417f25188f820f2d9f8c235e13d036b8ec78c810b5f15044855319147aa18580. 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/BRAPI0000369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426304732bbd4e4843302e84d1b1b2a53b44ecfaa7ed145c9a78f65a01c9717f. 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/BXSSW1802477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec63a69cf2a0767caf77b331ee43959fd3fb6d3e92b6986af1668cfcfc8874d4. 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/BXSSW1802478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a0619ec6c8550e9e9c28127785c2d078ff9b1832d730c0274b7521be8247f1. 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/BXSSW1802479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72fbff018854521084e9218dec485480cdc643133756bd2b76f4b2ac8b01045. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/BXSSW1802480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73bbd8997674a02c48ad0f8a96c5b08483081bbdfe5e14764fbb2b9f2a19a9f. 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/BXSSW1802481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f45d9b9e629ad62653a677e857c06bdce0d543601852406f44cea4d9882bf5. 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/BXSSW1802482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa598f096150070dda68da1d5967dc1bde21696eadee390c878f67278da7ad791. 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/BXSSW1802483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0085fefd532734a80aa8c08e10fd89ed43e752d3886c40498f8e6f3539ca3c69. 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/BXSSW1802484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7856d6f5c6a7e9ac2ba3e0b83490db2272bd3ded25c068a7a797ca4f85668d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BXOB62000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fde37b6951c0732a129ccad2c5e20d2972ff00553091c634f2d6b1fe75599c. 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/BXOB62000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527d17a95dc5c3212a14ff76ad2bc521854166115e94b4328599f0053b1a6600. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BXOB62000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8759612426d7360840b80a154986c23054dfb6ed59bc8233a7c4937c4f09f6. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/BXOB62000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84822f06c054ce21d0e6eed70e3352eeaedaec9fa7adacd1a22ff53a7a6d78cf. 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/BCB662200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bbd611be876a03c0443fa5289ae750c02779fa5ccf889ed87e3e360f443f40. 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/BKF812300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a20746caff1c3a3b798d33d111ddab4672fd7f4fdcc270523d26fb31db7910. 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/BCB662500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58d1a7ebba9d64cca39de2fab52003daeffa1aa83914359950442c23e909630. 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/BCB662500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7fdba0a77f989a6787eeb4707d0608250ea4b9e277f608bb1aa7e5f490ba3b. 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/BCB662500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71cc428f26080fe1129528077ffd2eea58d4c396bd3cb6823e5944701cdbe4f. 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/BCB662400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6d126471ebaf8d2d930f1f1b5d65eece6585d8c6674d985207b48820d424c1. 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/CAENV2541661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9883733a2f0295d31411b68c0d0dd52115a556ce60a2210ba0129c82c1bba845. 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/QZHZ62084905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85467a01f7416b5cb530050846d83b79c30cff8e155cb03591b1327560018fbc. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/BCB662500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2df52f49c43d0f733dbada204b49e3e97a8c3f10264547187c63122d86a87e. 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/BCB662500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a49c07a29a98bf1a447a2011b289a7cb733993031d510c5ce95297c4361bb2. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/BCB662100007.