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 0x18e04af218daccbc5c24f22da511650c33f6f45b0bbed33348300f7946d9227a. 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/58b69532-e168-47a8-bfce-d30e228b3f86.json and https://artists.proofprofile.net/proofs/artist/58b69532-e168-47a8-bfce-d30e228b3f86.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
龍が如く5 夢、叶えし者 オリジナルサウンドトラック (Vol.2)
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 0x80ea0c8b8a5aa20564c487d8ef4a4df5b3602304d9ab535b72c04ba8aa2540d0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPR501205975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6473246f8ca7ead3c20478cd2a0463811b7239139ea745ddbcefffb5227c15. 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/JPR501205947.
龍が如く5 夢、叶えし者 オリジナルサウンドトラック (Vol.1 Revised Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f56abb307ce104a642dc1301829fa72864bf11998826f9ff2ac5cf637fd553d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPR501205668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c4e7c1c9d7e9577fa43c9d3f8ec360ee5ab6a0baaabc1a5033141720439a28. 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/JPR501205669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d1267cd984692d98f417989544b9fb4fef4f90415c04c72f6455d564c1ffb0. 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/JPR501205670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dff2fe946d106b5eee47bd1978c845d2c5de0e3a7c85d88de4d81d64599d388. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPR501205672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3c65bd3a318e48c5bb9e8e101ebc75c844dac53f88e862e2633a56dbcc4f02. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPR501205675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b2a75ae3b729b7059abcae7c0268ec13d1f03216b4b91648157e14c3c5aa57. 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/JPR501205677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477f5ce1131370f84b1214a19cd06334bc1aae4394ba9fc4fbbef67d53ef5132. 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/JPR501205679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a74344b043f8ece543fb482a1340e200caa17079745faf37c36738c73c7967. 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/JPR501205682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6733d71ae512e0c0c330ab6d59c03a5253d4bbac8c24d713b2ee1e58fdfde127. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPR501205685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126aa816b795731be9e3f167d6de4d16f0071487f0c28bd94cc903dff82ac564. 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/JPR501205689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25521b619fe83f8d3fc8a5378a9cb5b62e935d88034b1befb7f0fcdba37a54dc. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JPR501205700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd963921b9bbf56bd6df61a7ef21238dadc7a890fc0716a3f11767ecb665e963a. 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/JPR501205701.