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 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 0x9020668e08172cbaf7969d11010bd692c85af07f836e0ab301ad86aa53f734e8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c64cc5b-876a-4c14-9f85-e11eb905bb77.json and https://artists.proofprofile.net/proofs/artist/5c64cc5b-876a-4c14-9f85-e11eb905bb77.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 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 0x65b00dbeec1e3f02ef9dce1a3872fde85108c80e0c2ba3c1e8323397a1c24e34. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPI101000890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8f811443ce8a07326ebf6b8fa7436b9564f012f991354881ff02ecc6392b3a. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/JPI101101058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8033a6bd327b295d5d35457e2ab204f5371f6d7a7462d77874c411c34940808d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPI101200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5309289fa0b66317ff35e2f3c57c5f02ddaefa68e518ff1339e8cb3b404363. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/JPI101402364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb306331c9c156f80f99bd8c999fcffdf4c839543a1ec9bc1a6782ecdbaadc2f. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/JPI101402367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ff3647ed4e7ea3635e322b2c18a250886a8f1d46077d83015df26a1a6eceb5. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/JPI101600428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97d3b5fd842da8bed29fed6dea748911d842b30f99aff57a98d42d062798ad5. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/JPI101800510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1898df364d14f09fceb7726a47ad5ee80b5a152495dd4eda3e2d2d855e7c43d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/JPI101800512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39ac92bc99ba0e15e15a509647e28d77928e450aad0d30d5cc6a30c6396539d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JPI101802283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3f521ee9b68af41296dfa6f81693de169167d3d6d91c72a3606e93fce847af. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/JPI101802287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9d1e395bbc2689d6618780b8500a76e1be215d84f9108916cd5eb0adefd4f3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPI101802545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d52e34c91bf8cf904b62c4f3a6cd8860cd5946410db61c3abffe773fc847bd8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPI101900830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fce45300c6e1d5a3fd1d70e810c1faeae88fe7308b9b06e398ce52f32c02a2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPI102101221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7c24f451a2b87c00b81ced0fb025a9cbf094a19894ff445f7a92c85a89e4ec. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPI102101227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd1488783bb75f2dc4e9b59f0f8dff6d336f9b0dffca1b8818c1afae8af4760. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/JPI102101228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c03aa6a1adc2e3f37c73a8310ef7e0bcff0edaf8180d4c4d9e611228d6702d5. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/JPI102101230.
Roudoku Kissa Hanashi no Kago (Vol.23 AnotherEdition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e19450b36497e0e47d1f8a1bed052a772d73d32b09ff1a45e713e0f687e1c6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPI102401560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ae7ca2b8092faf4ac20db793a34581d36142a10b60e7330fdb58dbe6d3c0ef. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPI102401561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c614c6c559f4716e19de938051d37bda4def22cb7f074af47f2863f050c5ca. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/JPI102401562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cce2e5f84d0543f91bd2ec4dee635f47276a289ad0b8ec2df4262f4dcf5a888. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPI102401563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24973915d8a64ba5e4357a5af2570faf96da888bb2ff15ede1e30d8b41fced8. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/JPI102401564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf38654fca741fac5a64424ffe8c584359ae59e5dbd5e48ccb5c8410f0654deb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPI102401565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ed4e5023a790e8dc3c469825f63c472018e9fee7d3163b674d450ce084367b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPI102501269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057c25ec07d4a07b0e728274e76d27809a8b29ba705be34731d6a56640d81565. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPI102501270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924038ee8b221f96db12912f4b613b8e97c8348860b37712d4e5775e6aa344d5. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/JPI102501271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5afd0e23e64bd89011ab6b4913c6bbc4f93e437aefb041f5793526c9de7acb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPI102501272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7ca110e819b837ce0ccd2c2ea4149c663b97d9b50ebf6358f91d5c3e4953e0. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/JPI102501273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7b0cb20b965732a99d757eb6c784689a3a619d70a3bc4ebe3247fe4ff4718a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/JPI102501274.
ツバサ・クロニクル ベスト・ボーカル・コレクション -edit version-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3504ab99afa8206589d05e3fadf8f9213c4a844584fae26879285b9b85d6bc11. 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/JPVI00545450.