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 0x15bb0ae0550b3eea82b3f57f189422988912395ee4362624c43b7222efaeb59b. 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/871aa31e-857f-4262-b32c-33ebed3eecc0.json and https://artists.proofprofile.net/proofs/artist/871aa31e-857f-4262-b32c-33ebed3eecc0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x0d0dd6772edf311f8706ec216e3bd29399aa56dd1d99ef54e5eca581b618d75b. 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/JPZ920802448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215ad8d1b8920d761ebe3c0c2ad325e39e36454bcadc67532861b17460a9f14a. 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/JPZ920802458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85967e295657898a59ddd9a7a301c3970259e536b987a128773dc5cd37376230. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/JPZ920802450.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32e21d216219accc49ce885955cbde2060074a92aa366317438822caeb7a919. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/JPZ920802459.
Sentimental na Natsu (Live at Musica Japonica, Osaka, 17th Aug. 2024)
Koibito tachi ga nemutta ato ni utau uta (Live at Shimokitazawa 440 8th Feb. 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ca337c58867af70238c74f3e432014cfa6ad63fb025b2498efa72bc451fa5a. 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/JPI592301361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcd9d95e8b9b3bdc20326061cffa97387c48b40f4ef64ff5c71f71e7c8edf47. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/JPI592301360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0688ad16b592b560046dd4dd81290a26760d67eead1d2154a29198abf92b593d. 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/JPI592201269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fb4c04a78b23d5be245cada401da35d289e1a900f7c31349ed7680cf2a6641. 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/TCJPS2211571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491447d869e2dd2e13b198d594ef92021c3f6f7da513fe06406521b9044cc4dd. 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/JPI592201275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf33a9e2735b975936808631b604cda6f21947384802e4a27d97be41ed3f81b. 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/JPI592201277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98eeab891c784966f5cfc269984dfcd45d39951152c8d8ae75d685aa55616404. 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/JPI592201279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1457d838ee7a37614e222e2ac4a3c47e140d8956117ab14960d84b15654874. 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/JPI592201290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e4c49a05ee5ef81822ae2bf6d105c0a589ecb73e5dab1620486a2631081b3f. 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/JPI592201291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af7d292cd2e52c873c30f6300b50211f3f5ab50bafa11aa4f6d6d160f6bc82f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPI592201273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a03f857c1124b19772ebf7dfa7c77da5985e1a80776fffa8383b034fb6121f. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/JPI592201289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d60f2a52c2ae44d68b9465384db1dbdea7630d7b7ed59bacbc573be5829b44d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPI592201287.
Soshite kimi to haru wo matsu -Yoshida Yo san to issho ni-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f7da4a36e58d21881c0cdb8ad3d1fec680a857b17e18a2b9eb6fdadaebcd20. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/JPI592201292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02590aa51c3dc08565d511ae60e2717eeda14b3b65189dec36b060e5486e6e3e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPI592001170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9eb8c350c01f7d65d5e054e09ffed7926525bddbe405efaf5f618b46ca4a6dd. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/JPI592001171.
Tomerareruka oretachiwo original sound track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea6b12eb870c8f1875d611f0a7a92cb6fd0954e3cb33755d8016a3e9b245f89. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPI591300704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b3d34472675a9dc758b4cc1c9bce5d95d5909140974e791db29251c8bea8af. 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/JPI591000242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b2df78aefe76e674c32a004c0c58437a25b9cdbff7b341c3b1d3c424efb45a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPI591000246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8823c5dab8ea834c55cdd75b0d2ff43e49cbc4cb9aea7b498db0b2d67d44261. 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/JPI591000250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef974242ead683d257aa7288d2ebf8daae781d7db6ca0df7d0e9b045a1bbec9f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/JPI591000241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdc9560a80eda5ef0e90b3f072cedf3869b8101e8b7cdacf6162a8171bf940b. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPI591000243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8be1b4d79a6fd3269b2de2f1f518509f11a24383137e67353b963f3cc800eca. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPI590900128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f98315776685ea9a8e697dcf15807f7e563fa4a2b677376811a7d25383d5bf. 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/JPI590900131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ac713a8fe6d7864e6c8d271de453ae38ca89512039d4b3303739a49dc12f1f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:25:22Z), 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/JPI590900129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ace249cbc17436ff105603d94bf3b45f6944c492c57a6462fc38453f8b600b. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/JPI590900124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8edda98461888872e03e99325296551bde486366ec6689223fb32cb5b55f072. 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/JPI590900164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48cd0af703df79e1c87c4dd2aeed1815adf08adbfb8ea0d3b16315b4d1764b4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCJPI1805215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45694b0fa57fa97f65f6d4fa035f6ac95006b422cb7bd32b5e90abde074c6e52. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCJPI1805219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bbfbc69ade462f4d517995bb3ebdc69083dde8fd51be2669214dbef2284d11. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/TCJPI1805216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453941b92ea91da45440fdcdeeffc98d3e4aeac7e7abfc7c66641266dd0be8fe. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/TCJPI1805218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6faa55952b5d62b70d6dcdf08313b257d550a722c79cce899f527603014141. 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/JPB622400708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4fc54821e2287f3d6d0d6cb4969afa1bca5fd528438e4ebb9cd1f817c097f5. 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/JPMV00202760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eabeb289fb3e4e808105c216d9c759a0de59fe4c8ddedcd856a7e8f497eba80. 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/JPCR01603700.
Sekai no News -light of the world- - FORCE OF NATURE Remix
Sekai no News -light of the world- (FORCE OF NATURE REMIX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8596fb799b151bf34d4186a1187cc00c9a5c63452a900475454b88c7847fd00. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCJPI1805210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7f0d6602dceefd34dc3657d69a15e24e7dcb8ee56621a866d2489a172fd02a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/JPVI00212010.