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 0xd816fcc5156f7575fc0cbce432995d5bb82922e1f39511dc93fbd33a973b93cd. 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/02d80525-f358-4c76-93fb-79808eac2454.json and https://artists.proofprofile.net/proofs/artist/02d80525-f358-4c76-93fb-79808eac2454.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 0x7f589d18b6e0640d64d9581357255d8f634d55536ffb4c537e14916476f69469. 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/FRS711700500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b71014d066c44f2fcbe2860dd02e2818a29c08647472feeafb563a796b4671. 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/SE2WJ1906002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2705a9b7a6aed62db88e6c746d265e95450bc3c54925c94e3120bb413108d8cf. 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/SE2WJ1606001.
Everything in Motion (Kornél Kovács Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9960c370e788ae112be44866b60adfc2fd39906fb46dd87f8ff6752affe4429. 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/UK34N1800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c6b1f3382fb6e8f4a52334c80b42cf4a46a1012b49624dadb62cf7ca3fafff. 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/GB7CH1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dde3221a2fcec4587f7e963f07eeda16200dc99e102c1c50154b78f3da1703. 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/SE2WJ1400501.
Baby Step / Down Since '92 (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121f48fc6ee64caa5cff543e043b8eeab04e1e9d42fba0a1b735890e8f43f48c. 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/GBEWA2101340.
Signal - Jean-Michel Blais Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01077b29d1cb800576372e95f808f77df54430e4fa486823b3f6068446828daa. 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/GBEWA2101290.
Silent Escape / Szikra / Alpha Tauri - Mix Cut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e94207e23eb00d64edfb31be9dc301f8706a9f798994c669c0080a05bcecef. 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/AUXN21800140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ddf7218306c48527f3d5102091e7736dde0a254abf31152f32cff66f0e4093. 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/AUXN21800143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197d22a3dc83a0a1c7d3484793308e7a0cbffbeb178ad0b08c5e296a93b8c957. 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/AUXN21800144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7209ee02eec06b08e050fa23d7470dfe0cefa8e8cbcc317c6122730f7279326e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUXN21800147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d9ae9e20737ddc3b4b2f67ddb7cfc4181410722ba045600ce39eff4f17ee2a. 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/AUXN21800079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171cc4399ef7e1be127e6b3c459352a4e8ede763eebbb8cab7afb8e7c46e3223. 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/DED621700154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4002cb4c2009ceaa84f4dd7327a7897abc28e2e1db8135f3e72f6413ee48bdd. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/UK7MC1600013.
Global Underground: Nubreed 11 - Theo Kottis (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e972498a63f02cfc5944502647cf0d948ee298ccc754f960504d6ae7a8c9c5e. 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/GBHFW1800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16e39d20d9d4d040e6d211a3f741d5b0bd9ef8af58f458d8e87d758f3af37d5. 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/GBHFW1800058.
Parallaxis - (Traumprinz' Over 2 The End Version) [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b15fa956f0ceb786e5bd28a06f2dbb17b3635aff6de2aa8cd7b2674ba54a1bc. 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/GBHFW1800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9fdedf0753843c07b29d9a90f72d96d967bdca13237714437c1187c938118a. 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/GBCEL1800562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3387f976cbf83fc6a3923c03faacba8bb2257993b13c259269b8f0ef13f24f60. 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/SE2WJ1805006.
no song without you - Cosmo's Midnight Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37df9c12260846d5754d4976d19b727922a0c9a6587b32e43e4553d7bc88f16. 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/GBAHS2000926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef2efb6555c9afd96e33e21c0efdab3eba948b6c95422c7d30a590ef2fb1c46. 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/GB6LY1600395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3a79ae2b794fdf80292076d9c782f4e6ad2fdb707ab3482b974bd6306f2ce4. 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/DECY62100136.
Somethin Bout You (feat. Betsy) - Kornél Kovács Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfa3073bc875891e0822ab2d50fb0733b24cc17bca6dd93f4e74cfd3645db46. 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/US38Y2425989.