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 0x50f1658846b7e6111d934edb0cd02177664c062701f11b25ab4f0e88a608e0ab. 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/c9f1e264-6a0e-406a-ae1e-d76d552c4432.json and https://artists.proofprofile.net/proofs/artist/c9f1e264-6a0e-406a-ae1e-d76d552c4432.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 0xed24be45faf469f98ede308ef647e112756a29693e1f34ec87f197a817b49051. 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/BXNZO1700007.
Brisa - Monkeyz (BR) e Thiago Mathias Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22709bb4f8a9012e9e6f7c86c8db3b90bc71e1b35f91088846a7ddb7478b7505. 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/BR3T81800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c08b79fe66e530d28a394bcb461272535974cd3f8c43ea0cd63154f83395f42. 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/BXHBP1800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13959a95cf7349363c6dc88e8198ce272daca29f16d0c06783845bba50cff55. 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/CA5KR1533817.
Armada Invites Radio 242 (Incl. Armada Trice Take-Over)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8e08930069fc2cb2beac037ef2cd9a36df752a78b09d149293bdc782e3ff6b. 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/NLF711900664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ae125642dcc84ed75f329ae9849a06f06d158947ab66aee9b9524f34fc03f3. 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/BXHBP1800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe35a811c325c2dfa3dbadab8ce3056e13f15acb99a4816e07ae173d10b7571a. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/BXHBP1800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da5994cab22ebc25da4ff575dad952dbf05f287374dcd2a6ba456fc319decd1. 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/BXHBP1800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2d3eefdaaf0c674d055293aa3d0d6d5ff2093018423331dd09d90c7fc81c96. 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/CHB701600137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c9f9e18f7005565bcd43e1185ca35af5f516e164efd2cb4b8c641ed3bf3a0b. 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/CA5KR1521395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4abc29300fa0fbdf1b79e6be65226f6df6eb3bb6d417e29744e7e7416557c9e. 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/CA5KR1521397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a024660c18c8c462e2d46e1a6f000ca023d285b188f21f0b2d305b25aa2a4df. 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/CA5KR1521398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9f3bd6a4ea3808b78f4e9108459fe8e47307dea093c40f5ececd6b979f54eb. 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/CA5KR1521396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94ae966ae955277256a7dd8ea87e80e368df4588ef75fbe8fb581cf06fd9b2c. 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/TCAGU2344505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8f96006d4cdc258f23388948fd54f4164e89ca9a13932300dd4742f2ad953e. 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/TCAEM1992759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966ecac120b569a9a04df56a47a59caaec78b16e015e01b57ef82d3d987429df. 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/CA5KR1958040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d67655ccf5f5d1c0283ea6cd13053ac93300f05711fc2b87f7e6a7f024e0436. 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/BXHBP1900065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd8d1e79af264fb1223ff64c78264172285bf182f7ea88ab4b56a46db5830df. 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/QM42K1886268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5684abc76a0de64dd458cfe8b59191ffddfe5652d3e6306e706c9e2e56278e54. 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/TCADN1827549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a14d05df4e70f3c9fbf723ceb079c8c1e47183a0f8839f4452b5d9a3e8fde6e. 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/NLF712407087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e184e03f6bbd7545d15b08da4f08dabc16ab50b4cedf3eea91e9cb24bf42bb. 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/NLF712104613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283a342e5d5dc2fdf920a9933afdcdae20847b20bfdc77f97e0e97ec858ad929. 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/NLF711911141.
No Stress - Tommie Sunshine & MureKian Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa820dab8d3369bc128e1fed6f3b6250f645f4bb6a757ec5194e88a5a1a4e5b5d. 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/NLF711911137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c1d09e905e3a652bc7e1062827a5f41789eb3a7845a2b94bd8e31082e33532. 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/DEH741648929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4c5e272a9f7c9d8247321d73bb0c0e29c216c80296ee1b058c43978ff78b71. 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/NLF712005460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4cce5c5cfc37aa78264ca465f38d14a7fbb447a8941287e983a829dd3b97b1. 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/NLF712004152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a75b84e3e8772d5a751c647eb1c003f60becfd496a5ca95df67500fbf5e6e1e. 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/GBKQU2029227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9779f6262fb0a9d1dafbc29ca54cbf03f5b22e77f5718817a654174367e7932e. 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/QM42K1847119.