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 0x6541522d59097129b7c11b00911af77740945df018e94a793f01f8439e55cb93. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cebf5443-ff5e-44f5-ac67-cce1a2d9c5a5.json and https://artists.proofprofile.net/proofs/artist/cebf5443-ff5e-44f5-ac67-cce1a2d9c5a5.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 0x6811c69f08a5a6a9a0366500184696fd6828c80f5bb1730b5300f5aeb45fe77a. 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/ITK601500650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a57589dfc1dc57066b577169db937caf32244c74113557c49ddeb606e11ee5. 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/ITK601500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb333a42d16f47224ff493ec8b75f5749ab24bb5a178b924e1fecb4e7c332238. 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/IT0501331303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8882b7ae7a55df540ca8c48a59bd162efe79989c5ce2489f9a01abc8565d2e27. 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/ITB001100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f11b0d26dd9c0a7251738ad69e3b245aa637366a3faa138bbfc3d138806eb3. 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/ITB001100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392552821fc21b36462f2e1ec913a90eaf3c2148dc652ba982071aa807e3eccc. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/ITB001100005.
Fra la via Aurelia e il West (dedicato a Francesco Guccini)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47c240d91528339fd0dc22309254285cd51130516c691867c226a17f723a0c5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ITOOJ1700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded56855778e25118c0c3a21a98743cc7afc5d762f5ab80a8e2d2f0b7870001f. 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/ITI400800353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c460c8d20be4a068192bd0fc7dd91f4161aec59babd60343f6b640b8ea9d20f. 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/ITI400800354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a72965ffd93a5c6d0a7f5439459a7076b64feec74ab9f80179b5c8b4bad82d0. 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/ITI400800355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfaf3addc14fd802fcc178a2b8413758f162f5487038c630f367988e330dead2. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITI400800356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d319358d1cf8fb8f095ca4d892f977642adc72974a1553df613ed0f03d2dd3c. 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/ITI400800357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cb808d36c487d3914473344e6f10c873df803b60c916cebfb86bbe74d8e2dc. 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/ITI400800363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bec81838d755d8eeaccc87984e8518d561f4df813a2fe2ce5d3cb1aedf62efb. 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/ITA881900478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe377a24010e7c5f0a978b9e22ad6181792b9544888dffe37fdd1f6bb720b0b61. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IT29Q1500160.
Thisastro (Una pioggia di stelle sull'umanità)
La Terra Santa (feat. Mauro Ermanno Giovanardi)