Gazzo may refer to: Places Italy Gazzo, Veneto, a town in the Province of Padua, Veneto Gazzo Veronese, a town in the Province of Verona, Veneto Gazzo di Bigarello, a village in the Province of Ma
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 0x8d4def8212f8817b21f76de64e765e9e5daaf1d5b572d26af43ef09c785abdc2. 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/6e2ea42f-8f11-44e8-82e1-ad5dbf245a26.json and https://artists.proofprofile.net/proofs/artist/6e2ea42f-8f11-44e8-82e1-ad5dbf245a26.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 0x07e1497ab5241e5944661da430a295e1e310115c84c1adb8358c235ec2b404cf. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USUM71504264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d78613ee72d78a4b70d6b070d2f7a8584a6c59b8e1bf0c7393cf87265b7a5bd. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USUM71507233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57fe1afc33567b4400dcde2072a5e38e60c55625c24e51629cff9dcec5db1d6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USUM71517993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a9be0ac1d1f91554850e4081b3dc06d5f880b4d733e3f9bc16c8a8498c9b33. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/TCACT1693860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fcd804c6a34c5e0568ef5c6def56c63e65b113adbddd0c118a480c5b26ffbf. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/TCACT1693866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4329fc3db5d401b8f099c98a4367e504fabc833782dc97a7388b1c93140dd7c5. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/GBKQU1787939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0540a916d1b3d0d45ca0d33c0338e119b039f416b7fa09de5d3680aa505a95ca. 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/USUM71700467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4074254ddea58c4635ab56d7659b8dec490b86d3e974e6f27237e3eaaab8db4. 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/USUM71417835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f46de7283ad983cace4cc887c9198c171441d52c3eb9f8cc3ed5dc571c8c460. 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/USUM71507030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce63137707bf15e5d0e9aab57a5f98ba891cf0769bf60ff4a0f7194cadb303e. 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/ITUM71600156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a270ccd03c4fad64b8188a329ceda3196b2754516ab99c3bdb91f281686014a. 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/USUM71416893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d80b9142392141514dea665769ab2777fdd15a5b982b661fe0f890b8b38072. 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/USUM71506802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5c46d1deb78b56e291c8a16ff30d204dda49273b3dfcafb119ca3810373827. 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/AUFF01500710.