Corleone (; or ) is a town and comune of roughly 11,158 inhabitants in the Metropolitan City of Palermo, in Sicily, Southern Italy. The town is located in the central part of the Sicilian region,
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 0x9195069d42a5de97c5a741362519e5aeef921e5caccff4e36c26c640c5302a9d. 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/41622d6a-6b38-4d07-8492-ad3a3a1c6ee7.json and https://artists.proofprofile.net/proofs/artist/41622d6a-6b38-4d07-8492-ad3a3a1c6ee7.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 0xdc1be96837e729eb921ada2d624d809cfa7687c128150e035db287755b7c1f94. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BK1P72400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91ce99dbd3ff42b56f3305c06bdd01dd773ba5d64b0582b2259320b098167e7. 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/BK1P72400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca38fc2e47f6bcb0c9351c795e3859ef1558516623af0599e381b20c7bb777ca. 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/BKTKU2400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9595c1221f4456b8e0c25295c6fb87e66e998de7d8f9266203528a33631ae0b7. 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/BKTKU2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a55cba4baea012f58b6a2e1e1fd2ac3fe7a161f8f224ac0f9384ca912f211d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKTKU2500096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4772a26ebf0cf327c381e4eb5b58a221e6804f0d16a17194f5f4bab256b93566. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/BKTKU2500478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e0205e6a623f9f6f6ce4546f16e407419c185177caffe592b8705d8be4f8f7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/BKTKU2500479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b8cf3549ad787a67514e552f875b87ecf88593345e9b586eece8c8ca8a4707. 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/BKTKU2500481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2ac597375b0e6f834a8d015ae9415e7d03ec422e9cdc1f070a74f8a295a065. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BKTKU2500688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5183c520015da9a7731bce28e64c4ea4e695100224c00813946538a96bb2dbef. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BKTKU2500682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525e3eed89c5eaf58d03725413acddf58dd75d838a39b37bc48a6ffdeb77a8be. 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/BK2242401802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f19eb3154bc479ffbdc564a4bf598fb32893cc492724602bcade5002ff62d7. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/QZGLM2412033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669d6fd036a9a60fd1d3dc68d963e72db949b5574c5648676deb171619b4b0f2. 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/BK1P72400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484c905cfac1619144eb41e40b54394bf4ba6660cedc23a55375b9e93d9beebb. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZNJX2440308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaffae626a7ae7bb7a20843c8c5d7b4d7c3441f83ea31e400a8fd6f63f1a9227. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKTKU2500108.