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 0x5cef30950201bf4462937184726c317c579b64689e55f96840d4c4f761854738. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d98b7818-b765-4e94-b7b9-f7bfb8e95182.json and https://artists.proofprofile.net/proofs/artist/d98b7818-b765-4e94-b7b9-f7bfb8e95182.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 0x842e8493bd751b77de474c63c131f99b18b443d413f87d8ac10201b9dc236c06. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/THSOH2300348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261a5a76f79d7a6494062dd978ee8cde70e701db29a9f662a122f6f33d50858e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:55:42Z), 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/THSOH2302376.
อ่านจันทรานิรันดร์
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e0c25c77009c1f4deeac6194066715f6f9dc7d343bbce1b4eeb59ce282c70e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:19:38Z), 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/THSOH2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c73de11dff7c3962af5ce92cd28c8819f0346531fdda4bc93e0f661fa1b48c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/THSOH2405849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b755150e626211f0551d27e26ffa2f8e0869a796f12800c3977c61cd5afc001. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:38:48Z), 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/THG012400788.