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 0xe577bc6c148dc86d3ba481d892e337f43db3a232cb5d231d8ec62250166ef206. 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/5911494c-f765-4f72-a57c-2c17a4f0c16a.json and https://artists.proofprofile.net/proofs/artist/5911494c-f765-4f72-a57c-2c17a4f0c16a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
កាយឆ្ងាយចិត្តនឹក
សុំក្បែរអូនមួយជីវិត
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 0x322da63401ba0883392db1f0ee9f724238e41347065c7d3b9374417df6443cf9. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAGO2290665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60866783bf142eb35452eb5c87298163801c94792148efee5f510a94ca4715b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAGO2290671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81241b71fbd05511a965ea4f720510b743cb573955ff1b095216b6e53679eae4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAGO2290715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7d58de38dcf1edf4947394fad8f5f2c02e3f62628048088b0d73e151a8bd6c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAHB2376037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5c9b1f47dc468fc6ef6893c93f3d973cad6fd59e0a2314b8bb99e28b036a24. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/TCAHL2320270.
ប្រាថ្នាគេតែចង់ក្បែរអូន (Live Acoustic)
កុងត្រាព្រាននារី
ស្រលាញ់តែស្ទាវគ្នាឯង
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31664672a889cb245f8a9ac24396cec115cb78be78d9785002add06c29bd85b3. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/TCAIZ2487179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6147b7624c103d757ac7f1e96d8e420369172b128619336cdbb6a2348c2efc6a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJE2553146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e2ff9271ff52b8b19a72b9a3d532f6f77bf3325671cfde21831a50c7687587. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJL2553629.