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 0x71317427fc9a180acf2500ff21f5b22e29debc57f7b8f04b5cfb462a2688321f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcbcdf1c-92d7-49c4-9dd5-0d9ff878cf7a.json and https://artists.proofprofile.net/proofs/artist/fcbcdf1c-92d7-49c4-9dd5-0d9ff878cf7a.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 0x8327c8d9d42a08595a364c2dfcc2876b2660d19decdd5064c9442d2e1005b8a0. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/BRMUD1100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c26f8a7416a884395aa70e0943efe6a6a194f8aa2448678d2c7222f5ccd4de. 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/BRMUD1100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c555db9fdd01ce5f2f58147585d989c85aee6a018e53473779d75b7ac3fb1a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:31:14Z), 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/BRMUD1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc284578a1557f71758967f361b51b50859f9a351c5547d13d8b23e9282700fe1. 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/BRMUD1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d95020da16828a11335a06d155d9339596b88d826568a206d06f86dcba14890. 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/BRMUD1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6af63b1213c37f48e1eafc0984d966ddee4d63def022c47da3360c5467a05b2. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BRMUD1500002.
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 0x0ad7236f26e02aa578b6b6d02d5a4a93c98f5a69f0ea038e8ca3e7eb757806e5. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BRMUD1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3780425d9cd680465b2e416468299b580320fa83632c551407edf71ce1b5d1db. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRMUD1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a53e530f4976d1843ac12b060f397b54e892ce2b04b8dd3fae49c9cd03fc67. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BRMUD1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f39225cbe85943f77506fb4aba765324159b0571f25563ec3054c47ab28eec. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BRMUD1500009.
Vale Quanto Pesa - Pérolas de Luiz Melodia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b786d4f4805f9589f9b5e80432626a514d387eb40693e4724ec18abfac44613. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BRDEP1800333.
Vale Quanto Pesa - Pérolas de Luiz Melodia (Edição de Luxo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d33992aaaad30d22f00e74600b3ae4fe6ae42b144ca294a591b7e1938d4936c. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/BRYTP2400006.
Direto no Coração: 40 Anos de Acontecências
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988c8287d1c19f354282c0114314efa6ca17f27b6f7401488252340440b4fb1e. 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/BRU0C2100005.
Samba e Amor (feat. Marta Ren & Pedro Luís)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205ea26dcc9ad74337416ad4592ea01cf86b540e412536c23ed0ce748ed3e3c8. 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/BRSME1800826.
Que Belo Estranho Dia Pra Se Ter Alegria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7d26e517e987ca2b763a87e81f22839c8c039ab3235bb726fc783b7097e429. 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/BRMUD0700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9705e948e9518d81248a0aa93b992e5c3d6e1ec6a2d8abdab033d1ecb2ac7a. 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/PT2HF2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10844e17790f4e6b5b1cd0d7ca6b70e8db330b0b97be6b003277cc140ab89fa3. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/BRUKM1300025.
29 Prêmio da Música Brasileira - Homenagem a Luiz Melodia (ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6566519cf7b3fdb19e5c54c187cd533e6fab872c19f5cbb5966cf02afdb3601d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BRPUI1000531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc73ea1e507ebe5b0a22b2b4d2235a664ff4c5d3f4b7c70087926d841ebc68b3. 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/BCDQH2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06f0e9072197a36714ce7aea5efe4554ba4182d5fa9d1fddfa3df5ed7709351. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/BXGTT2000097.