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 0x4bfc59469859e8d4637a37f2233feb7e08f17a1279bcef2ffab0b77c8838a336. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c1eb591-9407-44ca-9977-4ca94d7494d6.json and https://artists.proofprofile.net/proofs/artist/4c1eb591-9407-44ca-9977-4ca94d7494d6.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 0x27f2ecb6ed00d8d1d42d1d69a17b778cfab3e2cfd573dabc8e48fe49e745f94d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:59:54Z), 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/TCJPG1895271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a491785d8f0869a9407f917e80753bd479a721188df4e9445d46ed09eb04a7f. 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/TCJPG1895276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f027b3d476a72d8cb76650b64048de84525c92ecfdbc9d8710c0174b61b1e32. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CALVP1947069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81cae762410c25869d6b9e272ddaf8ad8d12bd65ac328be6af995c4bb8fb097. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCJPQ2106401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adda8ec2b0b3469dd93b60758fab4ce8e84bab30e60ee8e5d87565a283c64f1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB601872462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec707e09f1a6ec1e5afaa47cb6c7daa0c3291293d802e869cf2750858684cd9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CAHQJ1991912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f24665d60160383db5a4a3ec4bcf79c38942272da0341e92bea51ba6e234c71. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPZ2401580.
Paradox Electronic Sugar (feat. Nanami Urara)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e518a19b5c21f228badeb6834c2acbcaa774ca4c5ccf18f975de56dcc838be6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCJPV2351778.
IRREPARABLE HARDCORE IS BACK 2 鳳雷蘖華 ~ホウライゲッカ~
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606edd7851ecfe561f1ef3c2c2bfca004be6ad8ecf9b4b25fe10c1d7e7fa0968. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB602168455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b32172eb9e95c90954685aa4efe2bfe6b1b1f4afdd0d64d88756e2c6c1cde7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CALVP1947127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86df674252dc5d2c2ef63fdd294409546521bef258a40f51135bb3505a16887e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB602145622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adda8ec2b0b3469dd93b60758fab4ce8e84bab30e60ee8e5d87565a283c64f1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPB601872462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fe1f82857ff1e21bebe5fd23e7c2ccdf1759eb0f56601277f4064d708bc325. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/JPB602063269.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f39ecdce4994f5ab68c43660031e493a2c2dc8a6bf63a6413b216e89033325. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/CALVP2071301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4664cc87afd1e9cd528fad70171beeb1fc1241fc2f8d9be29de0534d85f5df13. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBLFP1518984.