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 0xab14b56e9659a95530aa49c053b6c7a4db005595a7e5ba36af7311a9b766a76b. 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/43543f71-6d2c-4e48-967a-750a3e71b630.json and https://artists.proofprofile.net/proofs/artist/43543f71-6d2c-4e48-967a-750a3e71b630.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Exit Tunes Presents Entrance Dream Music
{"copyright_id":"0x9a1c81838cbcc5819580ad493fb25d277caf88e6440d5ca7ec75b8b8fc7b947d","isrc":"JPC231500670","name":"Killer Lady","registered_at":"2026-06-26T20:58:04Z","spotify_id":"2bVJ6wgBzEWmeFIRXslE2n","type":"track"}
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 0x9a1c81838cbcc5819580ad493fb25d277caf88e6440d5ca7ec75b8b8fc7b947d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2bVJ6wgBzEWmeFIRXslE2n.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/2bVJ6wgBzEWmeFIRXslE2n.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a85cdf941956cdcdcd5a30286bb4f4b55c245a1633881faa829fd6de00bd04a. 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/5YhUc7C2Gm3pGluVDswpGl.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/5YhUc7C2Gm3pGluVDswpGl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959269fc1c4ec668eaf19484d079f318c25ccda889506fff9f4038a68721745d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5qFaM7wl7hxR0XOifG659u.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/5qFaM7wl7hxR0XOifG659u.
{"copyright_id":"0x86bdb0eb474e6dcbc9ba241530d50be8f2a1961f3c1a8b8f91d5479173866c59","isrc":"JPC231500673","name":"Asa Iro No Kami Hikouki","registered_at":"2026-06-25T18:25:20Z","spotify_id":"25TuZfGLP8NAHXTfQiNnnY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bdb0eb474e6dcbc9ba241530d50be8f2a1961f3c1a8b8f91d5479173866c59. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/25TuZfGLP8NAHXTfQiNnnY.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/25TuZfGLP8NAHXTfQiNnnY.
{"copyright_id":"0x944f5510bb0c2d664ec60e389314a4f85d5ca8f24092ffebfdda64d32cc8b6fc","isrc":"JPC231500677","name":"Reincarnation Ascension","registered_at":"2026-06-10T03:06:38Z","spotify_id":"2Ekyu49ZKGhdhmFxpzHJ8M","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944f5510bb0c2d664ec60e389314a4f85d5ca8f24092ffebfdda64d32cc8b6fc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2Ekyu49ZKGhdhmFxpzHJ8M.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/2Ekyu49ZKGhdhmFxpzHJ8M.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb531f1a27ba025d6291c8a927c73046bb17ab9b1a7ca05e7f66d65c0e641c022. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0cdSBv7GDs6VKM4aXRRGr9.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/0cdSBv7GDs6VKM4aXRRGr9.
Exit Tunes Presents The Best Of Gumi From Megpoid
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb067ef0a9650deb26052782c83df41546ad52fef0d6eeb7574bc17dbd88be48. 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/0n0IREhD9DoA4N0paq9zfi.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/0n0IREhD9DoA4N0paq9zfi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b2ccaf0043fc9867fe30c7c15b0b18fcb761c8fbffb9e3f8ce07a9d5db3fa8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7N2cYASWiJacIzyGqWjdCE.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/7N2cYASWiJacIzyGqWjdCE.
{"copyright_id":"0x325ddbb7816788ed7ded41958ef1fe2e0714cac7872f7cc52b0c7a619937b0d7","isrc":"JPC231500146","name":"Setsuna Trip","registered_at":"2026-06-10T03:06:56Z","spotify_id":"6kSYhJn2CesK3NvrXTPTdL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325ddbb7816788ed7ded41958ef1fe2e0714cac7872f7cc52b0c7a619937b0d7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6kSYhJn2CesK3NvrXTPTdL.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/6kSYhJn2CesK3NvrXTPTdL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb151a3262638a624f1a627d290b3a6f27a317d8b508d66f662bc6234482e671. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0rzy1AVhGxlY2oqR6Yeapd.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/0rzy1AVhGxlY2oqR6Yeapd.
{"copyright_id":"0xd933de0c46a1be12dbf9c064ccdcf500c5b35192b29c99869be712c4fe8b3e22","isrc":"JPC231500150","name":"Bokura No 16Bit Sensou","registered_at":"2026-06-26T20:59:53Z","spotify_id":"4Lsqg4zhCQAo8URk0RKH7W","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd933de0c46a1be12dbf9c064ccdcf500c5b35192b29c99869be712c4fe8b3e22. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4Lsqg4zhCQAo8URk0RKH7W.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/4Lsqg4zhCQAo8URk0RKH7W.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5690a04cc558ceab4da5df859d3f247419347cb047955aead459a2f267650965. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/76Hrz33pZIzKcmwdvU2n1i.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/76Hrz33pZIzKcmwdvU2n1i.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0887b2e40e4a3aa3c00b213ae2fb4bde9b3afc80e3238d300c13ac5fd9fb07b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7lYjHUXCoimBH1wqqaPhqB.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/7lYjHUXCoimBH1wqqaPhqB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88b8c683d09d5c8e349b3b743b62453b621fe2bfeb0e3e025b9be9e47bb21f8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4A4HMGo7rovDAzMW1dWSfu.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/4A4HMGo7rovDAzMW1dWSfu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e939572499fd1d6aa3c824ef7622469b1b7a7b64b62b6f00944a758398af83. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0dW9MP0OX5tFT3sMo1q284.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/0dW9MP0OX5tFT3sMo1q284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd683e9a2ae37817c9dc796e93e8c4de332f8595234e4bfb5d8ef9a489bdfb70. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7hrUR3R2bOkbMS7RgnGGsA.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/7hrUR3R2bOkbMS7RgnGGsA.
Exit Tunes Presents Entrance Dream Music2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be5946e84f6c8b811fedd5f6956703b0a0c728cf46b302f1ffe2ede1decd467. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5gA9ahUy7333wJAKRq91nd.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/5gA9ahUy7333wJAKRq91nd.
{"copyright_id":"0x38f874d15c764fa63b2e04066cf6259efddc0d474b99afba9568f5b40d1646e8","isrc":"JPC231501432","name":"Systematic Love","registered_at":"2026-06-06T16:48:10Z","spotify_id":"4vdUlcT5MBLITNBput9WBs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f874d15c764fa63b2e04066cf6259efddc0d474b99afba9568f5b40d1646e8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4vdUlcT5MBLITNBput9WBs.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/4vdUlcT5MBLITNBput9WBs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaeb4214eccf4f0d91b5a7e8f879ada0eaa2118abfdd8f76b1eb20ec12731a62. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3NYCSa1i5lwJXTdUfMFs0J.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/3NYCSa1i5lwJXTdUfMFs0J.