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 0x1ca6d0f4804f1bace737b2721c520ccfcb5f47840ee1dbfa1d832c7824a30eea. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45b6db7e-eeec-4983-9ae3-9e33ea86283a.json and https://artists.proofprofile.net/proofs/artist/45b6db7e-eeec-4983-9ae3-9e33ea86283a.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 0xeb020df7fb913067c1b6102918b2bcbe23114004db16b33ff6887f35186997a7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPD732000149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1fdcd8a60f9f188a1dc9170a32bb02869fe52247a117789632d4cf7ff4d7b2. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPD732100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020ada44d5412b7d6318ea347e73b038bfdfd4b53b4ad71a17b1116f5b76ee01. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPD732100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6082d04ff496dc3e6af11fd0af49c1065122688ade686fd3ac3f2fe5da43bea. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/JPD732200039.
ONGEKI Sound Collection 07『Memories of O.N.G.E.K.I.』
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae1c8207b5289417fda2fb6cdb08207d19b79221239e897b71aefe38bffa2bf. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/JPD732200170.
ONGEKI Sound Collection 07「Memories of O.N.G.E.K.I.」
ONGEKI Theme Song -Re:Fresh-「WakeUP MakeUP FEVER!」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd7a5e7800b4cd73627e27acf45d427ed09f75b57a53587c0db210f791722b8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:47:08Z), 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/JPD732200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d6beabd90449a3fe785055305a1759009d7e66abe66a0711c1e672be5f6aa2. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/JPD732301018.
ONGEKI 6th Anniversary CD 「Individual on parade!」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07a298b90241ede0df19f6bb45d2c87acb997a8f6122b5587d8e1565c9f97b1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPD732301663.