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 0x7a948c5f5c3a29ed8ef1d97925e315c6f89e551dafc6df9dac1afb3df220d388. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bdfb55ef-7cff-4e95-95bd-9b75c078f7c2.json and https://artists.proofprofile.net/proofs/artist/bdfb55ef-7cff-4e95-95bd-9b75c078f7c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Il Mio Cuore (feat. Modena City Ramblers)
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 0xf41e32b5616926c75251202bd0c495da98fc5c7cff675e71ee33159451c35535. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ITK872100164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10f38b2b5f3d597b382122437f6fd078fb62c7f96f8cc0142a33947e3a1f882. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITK872100166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1d848b28148bce7f0d34126f231f57e547f807ff4de7553ec89ac8f67ded6a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITK872100163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a745e398f941808cc627f88d5d1da36d9378b699f3e6d21b12d3f57a168d30e. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/ITK872000161.
La Terra dei miei Figli (feat. Cisco & Fry)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa367d66bf432788fe37853a97fed8ae144df6b311d4bc042860b7dc4597ec785. 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/ITK872000180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63807ca3c83acefac1961bf52044226116a4e8207ec8201e0ce891c3823d38a. 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/ITK872000159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e68447ce033cf8b7e3936afc0d6753816c6857648afdd191bedb40df8d621c3. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ITK872100165.
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 0x368efafd4a1e92ec0cc96ae8e82cb568dca7500daaace0da3cfa69d03fa2a2ac. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/ITK872000182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c86e34e8c50876d56a0c004256e0465ece5a89a94ca564ae398db3a6906d92. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ITK872100167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf55c18ec74185cab9e1fa40a66b5f435dcad1a3f47b15bd85cd0ce953ac0e6d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK872100168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c0255be587548cbc4bb604defd22a9d97f186a61eacfe35b200015051314e0. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/ITK872100169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa7d11bc6b02132cbcb86f552189d7a1d0011eff19faa4d642f8ac9a8518592. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITK872000198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58351804e7cd1766a185573ac26b3e0f9a352d0260b81d783511d6c52dd1252d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITK872100161.
Madre Terra (Special Edition feat. Angelo Branduardi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baa8cd66f32650351106d6fd88a9d9ca10db2355db83e6fdb3a02b44eab9723. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/ITK872100162.