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 0xb7a7c1ea478ff6ca76294b8b852d0daf64f0f8e06a8253eaa69e45b1599b6630. 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/73e3e18d-5186-4e2b-94cb-0af978903418.json and https://artists.proofprofile.net/proofs/artist/73e3e18d-5186-4e2b-94cb-0af978903418.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Lower Vibration (feat. Opera Quartet, Juan Carlos Albelo Zamora & Giovanna Famulari)
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 0x730bce3d8bf3bff5a4d091a25562387f6d736cddd6c7b7396bf5697b72cd99ec. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1513914 — a six-check JSON result.
N'oublie pas (feat. Livia Collins, Giovanna Famulari & Ruggero Brunetti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1975bb3d3dc24c4a785a704985e0f29003e90b149208c84055ebc2f2176ef6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1513915 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310c09268fb55b02d87ec90c9cbf24c80656f61f345c1372816075bf5c62f03f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1513916 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c49e760bf0048083e70db53e57a27ba586907c89ab49ead8946546a4fc5727. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1513917 — a six-check JSON result.
Iarosin (feat. Valeria Lukyanova & Juan Carlos Albelo Zamora)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b3ed4af6462eaade4b4019abecd48b91f48cf4f57f0bbf825a98abbdb66b6a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1513918 — a six-check JSON result.
Classic Breeze (feat. Juan Carlos Albelo Zamora & Giovanna Famulari)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd619049cf0c160239c05e5fbe3610f57b564b69bc12affc20c1ff9fec1c29d71. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1513919 — a six-check JSON result.
Ricordati di me (feat. Giovanna Famulari)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd269cb13f9590c571b6ccedd13600414b6c96fad489098959231acd8ae34033a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1513920 — a six-check JSON result.
Reverse (feat. Juan Carlos Albelo Zamora)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc19ca5a21ddd1a4951e1fb11e47fd1f95e4a4f32ebd3ffb4271962f7d7a7cc. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1513921 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69163bc7bc436f8ae95142335b0c0907e611789dc733e70dd4be9cf570cfb2a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1513922 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d86ba7e04be413c68368c2ea3f2848df57310f1e5087703ac77617ede682c3e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1513923 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201c231546b6c1a5950350c1ddd420516a1db5e0a72a55583b570d5404587816. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1513924 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf025805abdcf4df6c5189dc601f5204c256229cc019d29c4ba40ec545325e145. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1513925 — a six-check JSON result.
Ah l'amour (feat. Angelique Cavallari de la Tour & Juan Carlos Albelo Zamora)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3d89db4eda9e22095fcb72cfe4c5c5b2d6a5ba60ce7e1135e48047301c12f5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1513926 — a six-check JSON result.
Iarosin (Duet) [feat. Valeria Lukyanova]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3ed4dfb5cd0efeaa49014548e42f3727eac61b6adb618c23e36a17b7c44de4. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1513927 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4b23d4f36d8c1dbeaac229a643a388a57b60318daa67a5d0a3234749b9804a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1513928 — a six-check JSON result.
Karma Busta Rhythm (C. Campos & Steeve Justkott Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589a58203781e595e82540111ab74d5b26e58d75e6aa57e88937c21562f23414. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6F31385180 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa882e67ae400627f40f1cba0b8bfa2f222c8ce1d1bc55e2d9336817f820b2c05. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRBFM1800062 — a six-check JSON result.
Music for Dreams: Best of, Vol. 3 - Pt I (Continuous Mix)
Music for Dreams: Best of, Vol. 3 (Compiled and Mixed by DJ Ravin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5ede5c3ff9f5519120997b02b5bdc0a2313696e13d29e306507647f147d04d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKAZ71570001 — a six-check JSON result.
Night Life à la Medina (Mixed By DJ Karam)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf2bc0a7ced178aa8236c02a23d0cd6297b5c5d4149545f5dff9e872ea0a94a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V81782316 — a six-check JSON result.