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 0xd6d9b3e8a1e7104c82dde8a240e1d4a8ada42af27ed56e26018ec31ce7edfba2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1fd6fb0-f9b4-4d5e-8ab1-c093739a66d4.json and https://artists.proofprofile.net/proofs/artist/d1fd6fb0-f9b4-4d5e-8ab1-c093739a66d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gurenge (Demon Slayer: Kimetsu no Yaiba) - Remix
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 0xa6a40e44d890e6dda47d05d959c74d74930a1cd02804dab080c146711e8f1c80. 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/QZGWX2195289.
Inferno (Fire Force: Enen no Shouboutai) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef1a4900733fbf299fd551321abbabff38b352d5c1cbf73f9520047304210cf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGWX2195279.
Shadowgraph (Boogiepop Never Laughs) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc94c09cf48791a320208dbdc04aab4f28ecd3cf07b7f85a384a444ca3917e6. 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/QZGWX2195278.
Again (Fullmetal Alchemist: Brotherhood) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7275a55b800314430f6b4a8fb1ff753a607d40cc59aba3e5d23607d193aa603f. 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/QZGWX2195280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa704475ae81bea34a110ffc13a4327dbd3e5cdf48778aa4423f6dd16bb13bbb7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGWX2195281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a91dbcd7e07d4ae11467e01a3b92a21818587a916ae93a4202d474a49d68929. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZGWX2195288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602fea517aa2d110158616fd6a72e2abedaca8f2977daead556b3225c72cfe63. 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/QZGWX2195283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858d750e8f5f4e7e342ff16a4779796c049e7e0f0930c79091ddc92aba047c22. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZGWX2195285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ec3e881ed12e055e60170a384e6f245aad3cfe67466bd21fd66626560779fc. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZGWX2195282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8991f347dca0636e7cbd4f398251d09b391ce534c6fad7d2abbcad6c43ab74. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTB32324966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84769a00b4e7bfabec0263efed7e65a37ae5c033abb1db8639dae02dfc5e6865. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN32199723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac2d1f420b8b05e8efe9dbbc3c615f9d0482235c149574fe5999b95c1973306. 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/QZNWW2593462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ddd523d787f1100b42fb4153ae10512c227ca86076fc38cfbaae8731710f76. 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/QZES52510943.
Long Shot (Re:ZERO -Starting Life in Another World- Season 2) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478fcac609d792e7a25f7d102cfa1433bbfff367123f0e42a881f29212bfae77. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:59:04Z), 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/QZGWX2195287.
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 0x738fb49ab5406e152e5f897a8e4778d297ee117ff848c12d4c99a2cb73e4a90a. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:00:45Z), 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/QZGWX2195284.
Kamado Tanjirou no Uta (Kimetsu no Yaiba) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49574836b0a13c6cbe67e6957007f09b5ce21d72f15e3aa0d713fb070c460772. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZGWX2195286.