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 0x787dcbbbe6d9a1ec0b16a3d5501bc120596c2259ffc7613986ef4f5d7b617d6a. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb805ffd-c9d2-4d3a-97a6-f843cec93065.json and https://artists.proofprofile.net/proofs/artist/cb805ffd-c9d2-4d3a-97a6-f843cec93065.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
แม่ไม้เพลงไทย ชุด ลาสาวแม่กลอง
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 0x0851c5aff4692817b3163ba021e6b393f4451136fbc5cfa6d8f06629e8acfe8a. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/THMPT1600441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879c1d54de1489cbff765a17dfd27f4a9fc8eefbc67f4792bc180919d468dc3a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/THMPT1600443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a53ca6a46e5c7365344a1f1a63f643dae7f7fab8bafbcc1b968ac70e8747b54. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:45:42Z), 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/THTLM1410961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2763f243e8376eac805855043acbb023262e21e6b611f09eb8d2a90d06ca80ec. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/THTLM1410942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4ce75b37db7a821c9514060a26cd186331f3ac6648e51bd1acd7f265ec3bf9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/THTLM1410944.