Diso (Salentino: ; ) is a town and comune in the province of Lecce in the Apulia region of south-east Italy. It has existed since the early 11th century, and features several churches, buildings an
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 0x82894c34a7b9b1d094c4ceaec85252954dce064154936b1c15071ef67756f135. 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/d191a25c-a491-424c-ae04-687c107070db.json and https://artists.proofprofile.net/proofs/artist/d191a25c-a491-424c-ae04-687c107070db.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd87ebca3764c9a940bb9adbbe49563bab3b79fa53bef2c2532ea3f0f43fdd2. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USL4Q2064218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fe1be0516fdcd9cd803207ebed1d06fa5f3e3da065682ca48e63b907182cb0. 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/QM6MZ2121308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0157162cd457bea133c96bc17dfb3048ed341ba4e194c8de584dd4db9a3964cd. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QM6MZ2172610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf925f71f9114a41ab9a5c71e908f979b73b3e09538cc803361d059c4e0bd7c55. 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/QMDA72194554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa0d12ce018fc791eaadfaeccf312ef18ab2f8aae713a87fdc9bf3360eca53b. 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/QMDA72194558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cce8cc2f6964332795f36676a93cc79d57ababe128466069dfcc86a40507dd. 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/QMDA72194561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f85667aead896da35332c8c1657cc5ba93c899582f1b8b956c3927b2b329a4e. 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/QMDA62125458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751d4016aa5a6a6d34869b33ac03b4edba94be3104d3c9e9a83e4b61672205d2. 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/QMDA62125472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d94f64d5fe7033b2506707f78a5db6d053faa130085337821e68d74348c4c41. 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/QMDA72194599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75733b551c89b8e6f9344f9d80cee5289948455ca3b56add5d12b83d513928e. 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/QMDA72194598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd31c5c8325fc3da778896fb91847b69dd530d5cbe82ce45efd3513507533bee. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM6N22287962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e295b97ff768cbf36903afab6bf225b428a0f5152826a3064348d888075d06. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QM6P42488185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6d1f90e17ba7d2d160a52332afe2a0c7498f0b44030897426bcbab2a32b3de. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QM6P42495502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b32b0e40e59a96bbdadd6ff2f81c659faf9637c51865e145463a3d71550efb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM6P42488183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd515c44245f214dac3ed1add232c6e193a9f9b1e045d5258403556e343469dbe. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QM6P42488184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0336635b9d8afb43cd19230be507bbf7805457f466994a8bd1ac672af5f1f5e2. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM6P42495503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bf5199c41be97a841b1c61bebdda0f3926b05f1e1a4080cfd6b47adc5e0303. 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/SE6QE2380612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ed3a3fa9ef7eb7339fe333941f1a9a6a159714475e33799bbf2875cec3c663. 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/QZK6J2153979.