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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502744d5c6d310d01950bcce0b8a374d7f0d6152c2c8ae3d8c168a83c799c53e. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab1f6d7f-0f5c-49a0-addb-15bafef4e3c5.json and https://artists.proofprofile.net/proofs/artist/ab1f6d7f-0f5c-49a0-addb-15bafef4e3c5.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5081dc08b0ddc65484d37cbc3cad742e4a0106e9d29159fd15ed026c346fd8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZHZ42260808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95af025ec98d1c829ff16c2b2ac2666dfe708978d6a7162086b4378c2bbd0a1. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:03:38Z), 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/QZNJV2306538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c720ceb96824d5ef9b6c160f2618533d474c47f0b124f51ecccfb978aeea3d. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZNJV2306543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ded4ac453bfacc0baf7ac5afb1cbb35a59be4bbb0397348966865626e723808. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:47:57Z), 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/QZNJW2440893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ae29cc795f65c79884ab6394225f7fe5bdf2049b3f767c1a6db9dc65c95fcd. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZNJW2440894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a727b0652391778b9c42722cd085f282ca9289116d33034098920567e59e741. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:07:02Z), 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/QZNJW2440895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5cbbc4706c051fd2f7a6286c5cd9f3780fa370be3eec6c20deb09fe85e8232. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJW2440896.
No Meu Cariri/ Fogo Sem Fuzil/ Quando Chove no Sertão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c56475d3d0f46cab84f8b7b0d91a9211e68ad1bdced46a87b95a808b47f1ba. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNJW2440897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1468074319c958882b57c7fdbabdf29e1a86a461bbf03e5623aa7a228649afab. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNJW2440898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eed5c2a7d63b270a4fd94bfe31e5221cef75a47bd062f267f88a7b42285c2d6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNJW2440899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0048694cfbe204a4fd053c2ea0ea0b527b884f10ad00c91b0ca6deaf2fcdce8f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:22:28Z), 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/QZNJW2440900.
Meu Divino São José/ São João dos Carneirinhos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9665c28954458cd863d19d5b6d394870e4cb3a95989dac4464f07ffd87cd1e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNJW2440901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca31d214f8ce9d6abd3f54e37b7c06c8669411b019af659e170ca729ab28cd29. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZNJW2440902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd064878ac94d93b658d3c9b529796aaf2fb8f58f6e8c8c3966ac1170c5723444. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNJW2440903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e11bcdb2d2aa6c2bb0b5282a7b05979124db314bed6cadcdfbaf523b40472d7. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZNJW2440904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e750b4ae45ac214fb3fff89e3d4115f5461e3bc810f662cd4760b406386e5f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJW2440905.
Meu vaqueiro, meu peão (Versão Nação Nordestina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd550d7cbce9c24e1750016100f06a9922f0087556203909cee70ee52cbe91bf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWU2588337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc717bef075b7a2f3b277a23b72d8cadd54ea1b877dbb96acc6ab0d9c72693ef0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWU2588340.
Um São João Encantado Pelas Mãos do Mestre Moza