Pisani may refer to: Pisani (surname), Italian surname Pisani family, a Venetian patrician family active in the Venetian Republic from the 12th to the 18th Centuries Rocca Pisana Palazzo Contarini Pi
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 0x2d15352397b6aab8facce57fe1e7f9e64a39e35989c8db94e6c76c642187e4a4. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e7dbb43-f098-4769-bca3-68617a3fd1dc.json and https://artists.proofprofile.net/proofs/artist/9e7dbb43-f098-4769-bca3-68617a3fd1dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ninety Nine Problems 2018 - Sandvikarussen
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 0xeea5a557246e29ff61c142572be2c9476d3e719852d5684c4be1b251f1251e7f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/TCADW1870520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1c6c27dbc29110356ee36770688b4b1ddb30bf21fb7a52a684682bea1f057e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAEF1931426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e713db31db26ffd25cac041852b275243e8c35ecfde865ac8e423cc69b9ab3. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAFB2065464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d21715762dcd23c7f01ef51882f46fd148f2ca1c2917b38644cd87d35f74733. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCAFO2190787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e633b852256f6f091c943644849745cd31cf6e8df8331025437e25f7cd26517. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/TCAFU2169440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5527435d68e4f98970c5fac35aae7e1b07597ec9d762bda741d6d4fb09683b9c. 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/TCAGN2293831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2ca06d897f495bace3b1a7a216bab872b31474f91bbc11da88879c34ee9e8d. 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/USA2P2417084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a452129e8c06f67509f15307a149e87d191ab52a3812c02e886212cf436bfa. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZWFS2483473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a452129e8c06f67509f15307a149e87d191ab52a3812c02e886212cf436bfa. 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/QZWFS2483473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50f483bc85d3b767f14b6eb8732ab6094c9dc4e627f35426fb918a40095aa46. 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/QZZ7L2494268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b424ad3f0897c3da13ae09272b2ebbba0e62f852045f50eb9de95322ae95287. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/NOCKK2231010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf188aae49733ceb2afd312c7bd2e75c9eee5dfe6614cf4bff45f563ad6df4879. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZTAZ2393231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a0650c77fa3a71d39c7e406866dcf60b71504efb7d9b41db5ac2e38fb74b6f. 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/QZNWQ2133295.