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 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 0x679156ed174df23597a20005f953673cc965c56e4a8b4faccf51fc97840ea84b. 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/5d8dd792-557f-482a-8776-a8f997d0972f.json and https://artists.proofprofile.net/proofs/artist/5d8dd792-557f-482a-8776-a8f997d0972f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ジョジョの奇妙な冒険 O.S.T Phantom Blood [Destiny]
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 0x55e3e4dae533c2dfe9800493af721a3eaf10f63f70fc13e86d002632360202ef. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPQ461200146.
JOJO'S BIZARRE ADVENTURE -O.S.T Phantom Blood [Destiny]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6092c55f675bffac03810fb1c1b18b224b2b2f58901ab3fd44692a2ad870ba22. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPQ461200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1c3bb6f199f49c50bf18bd94be3ba8192f4ea11281a81cf8d90daad1ee3f56. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPQ461200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155fca5f5672767019abe3cc05b5f4be663218b0b83ac8b745684430526af25f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPQ461200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96c253748d3f55016487705180541d363a139730bd1607f9399eff3d20c1474. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JPQ461200133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd474dd71a42b01b29ae455daf4d14b35716bb2ba34bbc18a0ddff0b6ede8ab4f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPQ461200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5201011d7b1dab995d54fc4a346759a751d3529bc14f0b2778fba433e45b9c. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/JPQ461200145.
JOJO'S BIZARRE ADVENTURE -O.S.T Phantom Blood [Future]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e509eae3be881d67678acf5e1ec9849843eaf41cfdadbd13429f8b7ff5efbd. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/JPQ461200148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112cafa6adf524e41b44f929528a5bcfa39ab639365abfeddb861163d39feae0. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JPQ461200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dadd06acb70d9ea27fc7ba4a0ec62799c3c76d2f75a31714a3218a3fb821351. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/JPQ461200152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0771c077a81337c1d2f94df5504c45a1011be90e73e73e5647a1ee63d4fe3808. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/JPQ461200153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0122efba5f0179139ae5b7233ca9175f6e0310ee4c8c0581af0d18c6281a0d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPQ461200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f19e964f34c4ddfa5958e80ada51c29a328b9b196ab59441f6524d86c2d6704. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPQ461200158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d43c1b6a9c7f4a0ac83ff8913962697dc5ce5cc6b32646c452c64b344d45ae8. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPQ461200159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf654982917d638ec688f4dbe245af5161c559d0e685907bc3944ec671c17c06a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPQ461200165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510a15b93def0ac927ef64c2f8b498d59c8061437151ed54e2c1b1ceb7ef16d6. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/JPQ461200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e8f1001b79d1d1fe2a734d925bd1186cbe9d2827d1358cec74724c54006bf6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPQ461200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa352455d1a15d7c9d01bb19d3f1fa194c60a0dfdbd44d81b03a4ef09e4d726c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPQ461200157.
「映画クレヨンしんちゃん 超華麗！灼熱のカスカベダンサーズ」 (BGM集)