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 0xb544aa44e88817211dd81c4ee9894192e79822de030447fbbd88e966d6b0b7ce. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa7d297c-7971-42d6-ba4b-31bc1966ea0b.json and https://artists.proofprofile.net/proofs/artist/aa7d297c-7971-42d6-ba4b-31bc1966ea0b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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美容院安静舒缓钢琴曲 咖啡馆音乐 五音疗愈静心安神轻音乐
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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 0x08ee64e399609bd5c8256b8f9f2fd0e6b340cdb25e2add054df62bef71a394e1. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QMFMG2376510.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa817e94c364c19aa42771e7a3f72c2697ef99805e8bfa87e43fd9ba4ec3d70c2. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:01:39Z), 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/QMFMG2376509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0140013b8f63b5f87074496cfbc03b02c718fc00ccfa27746c6e8fbbb211ae. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QMFMG2376511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203f0c87080b36fa545d0490988eb730e3258e82e7a97705488217d571f6a476. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:03:24Z), 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/QMFMG2376512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22f96b2daa78a4067ab3c3c4f78e4681add9229a55d87c74564b6837e294f19. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMFMG2376514.
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