1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb4e9d5a81e77a4d31cabfd34a4142934aa1dff6b9c8d7867504fc57700a9f9ec. 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/c4f59dfd-47c8-47cc-bc12-f0216655fb40.json and https://artists.proofprofile.net/proofs/artist/c4f59dfd-47c8-47cc-bc12-f0216655fb40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wolf fell in love with Little Red Riding Hood
The Script of thief F ~Mystery of the diamond disappeared~
October funeral ~ Harvest festival of resentment~
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cca2b2b845e77f000abd2ac423e19e1c86a29f70b2f8320469fa40625bb33b9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1oH0XcOO0NRwYTGwrX3MOi.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1oH0XcOO0NRwYTGwrX3MOi.
Mr. Showtime (feat. 初音ミク&鏡音リン&鏡音レン&巡音ルカ&MEIKO&KAITO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a119270645350cd2e3f720db6069a8cf1208d697b9c7c1d4d03b86f7e059b57. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/45R4tUYUHpzkcwXp6pbmZY.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/45R4tUYUHpzkcwXp6pbmZY.
Amazing Dolce-初音ミク「マジカルミライ 2020」Live- (feat. MEIKO&鏡音リン&鏡音レン)
Kagaminext feat. 鏡音リン、鏡音レン ―10th ANNIVERSARY BEST―
{"copyright_id":"0x8e1f66242ced007e884732985a04b91514036de281393035f4dfbd2861d0a73e","isrc":"JPC231700359","name":"Welcome to the Mirror Sound's Kingdom","registered_at":"2026-06-09T16:41:24Z","spotify_id":"2PLjCZqcSXAHEc4kvWz8NB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1f66242ced007e884732985a04b91514036de281393035f4dfbd2861d0a73e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2PLjCZqcSXAHEc4kvWz8NB.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2PLjCZqcSXAHEc4kvWz8NB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b6d4343c7f0a264b9d912a54b43c8f31dc42450fdaf42c66f736cdf21f49d6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2gjI2JwXV1a6k8NMWcrMbf.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2gjI2JwXV1a6k8NMWcrMbf.