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 0x6edf2ccdab717a8582ef1f6abba0706f683d3a53b3e1c8cb91cfc087c97433e7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/965d2035-467d-4464-b7b4-5220e812d152.json and https://artists.proofprofile.net/proofs/artist/965d2035-467d-4464-b7b4-5220e812d152.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 0x96162a3eff5df836512730b8b542766bd5e98c918e14025eb8a084fe7c0934fc. 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/QZHZ52042339.
Aviva-Nos / A Terra Clama / Fogo e Glória
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6f7ea93bd9a2d1a62d6e20fa9a05c3ff3e2844c14392d457eb22a7cefc9198. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BCCTD2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a3f40c9906bd15df154be981fae4f7555e62df80c7251a331b86f41a038d1b. 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/BRDFB2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3109bb12f19fde12e8ee87316aa65528eb1c0c6b88f5109c180c248f527d8374. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRDFB2400002.
Aviva-Nos / A Terra Clama / Faz a Terra Tremer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9114531feb002bc8f9a1b5bf6d6bdd847ce7402b5efe728387ed5ec7cad19d. 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/BRDFB2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707a87348243ba8d440b937ce3ede983697ac477a4f462c90e26b4c7e5799e84. 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/BRDFB2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80a3958e4db4250098c055fde07bdaa21931c6709fd05edb2595593512df447. 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/BRDFB2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d154b4be89beaddcff19e977642bdc11d07cfc75355346d5f1a431401e16e3. 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/BRDFB2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b70d5dc75e2af6dda618745b1a26f306a653bde51f17cdd252dd0030127003. 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/BRDFB2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88d19528c65918bfc17e02acdb9af4b23b958fdda94ccf700ceeed85d525e0a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRDFB2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b08410051f4a3b535d93f7f80a2bac1f09ccd6a5065b5f9d3b6eb70f3a0a07d. 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/BRDFB2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb227cffbdb2fabda274d8cd14ceb93cf5da349217ca8990e67f62f47ee2b7e. 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/BRDFB2300001.
Arcos de Fogo, Flechas Incendiadas - Ao Vivo
Arcos de Fogo, Flechas Incendiadas (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058718306244e32cfba852029e2d97460c529d202488ceb4b09e45bc815a412f. 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/QZHZ51921021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9276836337622b321abf14e99afcd1f138aa3dfa9586f05203db738f39585296. 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/BK57D2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96eac006d080b89138a080f4269c4798533ad3c4de45205d6437277a4f2d3954. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK57D2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1281c1bbdd53c5c201d30d06fe236198914b931e44d492aa7937ed3ea7d419e0. 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/BK57D2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc2ff487f259ff3f1ff0b3b53a519b51a735a69cc95de72df0ec572304b9861. 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/BK57D2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96eac006d080b89138a080f4269c4798533ad3c4de45205d6437277a4f2d3954. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BK57D2400003.