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 0x4e9fbd3fa73a739730a0d7f3ab0d3eb84cec00192e331c4a20abd1ed19469e34. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68f02df8-4fdb-4da3-91cc-f7aea2a24f21.json and https://artists.proofprofile.net/proofs/artist/68f02df8-4fdb-4da3-91cc-f7aea2a24f21.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
プラネタリウム・アップル(each man-made) (feat. 初音ミク)
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 0xfd3eebf69eda1b6a646a2cdf8af5a384f4d7963fcd847f2a0a1385063d984ecb. 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/JP92Q2301720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702b067fc86edd1bf1e361a3cbc40d1af7681adeb5ef1fca178b2b2dcecb0235. 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/JP92Q2301721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3a8fa33bf688879756be4b4d9bfd954a52fc70b514cc67005627858b7f00d9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JP92Q2301723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb839f98b2c8b7c7fc92a6d3d4185db6d37e4017ebd7bd93003daef3ec4f29871. 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/JP92Q2301724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83d3101891ffe7b5871b09f6555e4715f59b2dffc9ec40b6ebfe2d2c9bdffc6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JP92Q2301726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8baf1f642286d5c112f97ee2006c7403fb6b6992df59a81b43ecc52b88119a0. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/JP92Q2301727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b6bc9e5795ea6237d8f6ab5138a20b34c88fd6956dc9e19a076225229f744f. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JP92Q2301729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3695a8843aa6016b3cf9badba0de332c03f4b25b07d47dca59f221a4082ae37a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JP92Q2301730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd413f52e5f1e8b8190618324c24ca73081017f914631081eab0a181c874b43b6. 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/JP92Q2301487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234fc5e5dcf85e955be14a5cfd7b5af6005eddbf620623fc08c47e35a7f32260. 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/JP92Q2301488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce9e0d691a517f7eba6d93710badaa223d6eb58b5c695f2426240583bb866b0. 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/JP92Q2301489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aab578eff5b7c018983e081d5f2838e10ee0583a81964b093961415e7281e29. 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/JP92Q2200790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56efc7f569b5b99f77faf06967b0ddbac75ca339b31837c21b8053222f8dfc0. 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/JP92Q2301442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06026d662ed2addc9f7be20b1cb5968cef10336bea2bf27387a2ded8f4563645. 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/JP92Q2301492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96d8e610949cfc309b2c1cf9c2e1c50949e995fcea3ceeae1b6014bc50c4137. 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/JP92Q2301493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3fa436bdbbad3bc9e3a234fe8d7c88f4d9b16635018ba5d7ca88a1c5ee3f8b. 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/JP92Q2301494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5236d6c10c30ba6d7208004bbc58e82ad5f9df6033ff0e3cbb07f069b30d50. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JP92Q2301495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35de1487aaf46ff9050856382ae9359a4f2eebcd004dd1a08686c8e04c36020c. 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/JP92Q2301496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedaa432e8a3d3b3fd360c1cd263a52bde0ec0c649b7cd8b95401343c1f20834. 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/JP92Q2400286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff061cbeea62d112f7a19bf6293b32cc62b6c4c31e2cd4e229393b58a60de16e. 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/JP92Q2302010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd5363a6b14ad34f8d636ff56016237a92b1eba1bcfbc02dd6f9603443a61e8. 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/JP92Q2301990.
九龍ストレイドッグ (feat. 鏡音リン&鏡音レン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dcda16af92ce3fe1cb8f862251271d7a57143e78a56f070736c7bd10e2f75c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JP92Q2401488.
サイレンナイトアリス (feat. 春日部つむぎ&中国うさぎ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301b6647b0eca3b1fa2fa1eedc2596910074ff71509829577b399ce5342cc7ea. 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/JP92Q2401369.
main dishが足りてない (feat. 鏡音レン&初音ミク&鏡音リン&MEIKO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34c2c6e62ce4539171da83ffa013277784fc289eb9892dda295597403e32cff. 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/JP92Q2400758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5571dc3634953a53f5e9ec21fe0abf341ec66d5c3b26231ec6effb4118236b. 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/JP92Q2400534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedaa432e8a3d3b3fd360c1cd263a52bde0ec0c649b7cd8b95401343c1f20834. 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/JP92Q2400286.
いっぱいキャパシティ (feat. VOICEVOX:春日部つむぎ&VOICEVOX:ずんだもん)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95401f3750ba36b845fbac657fd8eb9a1109dd33cd282d4bb4ad12748255346a. 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/JP92Q2400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c97f840f2b95989b6f9c729b2998eb6593ed4a9b591830b9140db68a3139d6. 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/JP92Q2400165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff061cbeea62d112f7a19bf6293b32cc62b6c4c31e2cd4e229393b58a60de16e. 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/JP92Q2302010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd5363a6b14ad34f8d636ff56016237a92b1eba1bcfbc02dd6f9603443a61e8. 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/JP92Q2301990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56efc7f569b5b99f77faf06967b0ddbac75ca339b31837c21b8053222f8dfc0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JP92Q2301442.