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 0xcdb4a369bcd18c4445bfb491b38526c6c06a413abdfb180f98f704b3e5e7191f. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab096e50-7ebe-40f3-b05b-232fc998463c.json and https://artists.proofprofile.net/proofs/artist/ab096e50-7ebe-40f3-b05b-232fc998463c.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 0x8215564b8c9111cd5601f30b67586b933b5f6472ee196ba0c0cd305a39dc8421. 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/QZZ7R2420830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ea6e8918f7f8ceca5ed3eb14ffd2c2d18194cd5b9f537a0f0f2bf9d6fbc690. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:28:20Z), 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/QZFYZ2527553.
Stan Smith Like i Play For The Wimbledon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436623a94067107240f8496c852dbecb6cec6ffc7caaf8eef8ec505d05d6e96f. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:40:55Z), 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/QZNWW2539500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f53520b3909cc33bb346e13a0a6229b2ac011bac77d4689344911cedf84331f. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:37:03Z), 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/QZNWW2539504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ebd8ceb00060141fb2b3955c91009667cfb732cf6b9f2172240e944390ade1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFG2509606.