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 0x30c6f707260a5ee3ff68136b6ea7369d21339606260d952bae9cd29610067200. 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/2dbba208-bbaa-4f80-94a1-d53f23e085e3.json and https://artists.proofprofile.net/proofs/artist/2dbba208-bbaa-4f80-94a1-d53f23e085e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Unlasting (from Sword Art Online: Alicization War of Underworld)
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 0x1991c981a3c828629dd4e771085659a756cff0e849cdce40cdbb83170579ed26. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QZKWA2032755.
Neon Genesis Evangelion: Death and Rebirth Main Theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ed0e2c187238c6782dfa6a04199a86ace8cf384505d56e4008f2d3c530edd0. 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/QZKWA2032756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b6429db03e85591bcf00e36261890ccce3c998dbd26496b2dd5b9572baa5e4. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QZKWA2032758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914bb55e4cd0db9061e641443646f3ea30b64b4add3083df058538322da6236b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZKWA2032761.
Case Closed: the Crimson Love Letter (from Detective Conan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd0be1d50af230778aa7094599c76d34108285c2a56e9ee1a8912320a30a076. 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/QZKWA2032765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2e9b5ca8f84c99c014669344e73984faddaa90150e8f01a6895795ba65b618. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZKWA2032776.
The Quintessential Quintuplets Main Theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7d6c59ba821cc9386abfb9d01ce65b14544d71e392f8601925a90a96a89a94. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/QZKWA2032778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c85338d6ffc3c1249c0a8134294a883adcd5fc6aaf6d368053e41688ff118e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:07:57Z), 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/USJ3V2406894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca50cf225bf9605447fbcc0b27f1561070641016032b75aa150f09cebbb08e0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USJ3V2406895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55981af15c1cde1d6a71d79667399a817b23d098c3208542c292c63c52fe8b4. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USJ3V2406896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd566935e17dceb619d2bbeece3b022042e3aa32250d6e08b3d12f21ba6686de5. 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/USJ3V2406897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5159a249105b87e7ae50b033a218328e00a47a4f4d6593e5f6da090fe468b6c6. 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/USJ3V2406904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5f5973d61636399a240f8408bebf5cce6a585692ac9a27a7a15904f1a16fc9. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/AUGBT2446409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5b56b7816b5a3356df73da8967068a953fc8216bde5d59151703e47859e8d6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AUGBT2446413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dd333e634aee1991685c9c9235394179c97f653c7c0d8a7eff84f71f5f70e5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AUGBT2446414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2461f4e860c904a5dc69e3f45ce1f0b804fa4fc599f4a3965b632f5c187e58. 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/AUGBT2446421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461096e72bb5b455670a2aa20ffa21358513fb13f1942014cbbf09b1c0c2aa2c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/AUGBT2446422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93aad53b370051486554d933a7be333d908abe96689679e51c677d721ff9d67d. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/AUGBT2446424.