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 0x206df278cef3662e90e95fbdd86a2bd19dfe8cf1de6890974a6fe9c2aca5d07d. 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/8bba2ec3-b0eb-44b3-a4b9-78ff57db6655.json and https://artists.proofprofile.net/proofs/artist/8bba2ec3-b0eb-44b3-a4b9-78ff57db6655.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TVアニメ「やがて君になる」オープニングテーマ「君にふれて」
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 0x223fc042f4e7fb37ca43c0a9137eeced1b0b35f62323ae56aba91e66f5de3fe8. 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/JPD731800511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cc7078b3929988371849a67f5b7a76cb49cea90dd2bcb294157e8bb10a097a. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/JPD731800512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac54147968dc55c72e8d9e820c0c733b8df939efda540f45fe29fa934e0ebda0. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/JPD731800513.
TVアニメ「ブギーポップは笑わない」エンディングテーマ「Whiteout」
TV ANIME SERIES ”ASTRA LOST IN SPACE” ENDING THEME GLOW AT THE VELOCITY OF LIGHT
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc3a0af8fb302187816faa19d977c605c068f82c7c8564c9d512310dafae81d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPD731900234.
TVアニメ「彼方のアストラ」エンディングテーマ「Glow at the Velocity of Light」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc3a0af8fb302187816faa19d977c605c068f82c7c8564c9d512310dafae81d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPD731900234.
Ending theme from TV anime series ”Cautious Hero: The Hero Is Overpowered but Overly Cautious””be perfect, plz!”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313ef45a5c5a4b5caadd6e62a91b28745bfe5ddff666ad9442c77b2c64311741. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/JPD731900569.
TVアニメ「慎重勇者～この勇者が俺TUEEEくせに慎重すぎる～」エンディングテーマ「be perfect, plz!」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac460d19df626623e7a6d5e744f031e5016e03de88c86a056af9f95303380623. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/JPD731900568.
OPENING THEME FROM TV SERIES ”SO I'M SPIDER, SO WHAT?”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8df7285a69dd8191d087b9ecc5e3b9d8085dd290a830b80e807896c9e96ed9. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/JPD732000448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5f97323ac267a486ce8f7fce626b5635488d34d978fe32b4ae1bf754f0c866. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/JPD732000449.
TVアニメ「蜘蛛ですが、なにか?」オープニングテーマ「keep weaving your spider way」
TVアニメ「幼なじみが絶対に負けないラブコメ」オープニングテーマ「Chance! & Revenge!」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac374cf19e66c10aaf9b1bb507ca05ea3e06693a000dde046507b4ea7d0af86. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/JPD732100121.
TVアニメ「ハコヅメ～交番女子の逆襲～」オープニングテーマ「知らなきゃ」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1d954a7857314dec4dd6077333696ea24328fd992ccf232a32989daa31a352. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/JPD732100557.
OPENING THEME SONG FROM TV SERIES "POLICE IN A POD" I HAVE TO KNOW
TVアニメ「乙女ゲー世界はモブに厳しい世界です」エンディングテーマ「selfish」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa6b1f0efc47f7c04e417bfcda476bc46cfdb01e029cc6d63809c19b7f83ce4. 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/JPD732200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa6b1f0efc47f7c04e417bfcda476bc46cfdb01e029cc6d63809c19b7f83ce4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPD732200059.
TVアニメ「メイドインアビス 烈日の黄金郷」オープニングテーマ「かたち」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb0c6a4d474f4f2f627e5f959ffb6ad8be2b8056287c205a60eecb3e42971fe. 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/JPD732100609.
OPENING THEME FROM TV SERIES MADE IN ABYSS ”THE GOLDEN CITY OF THE SCORCHING SUN” THE SHAPE OF
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb0c6a4d474f4f2f627e5f959ffb6ad8be2b8056287c205a60eecb3e42971fe. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPD732100609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223fc042f4e7fb37ca43c0a9137eeced1b0b35f62323ae56aba91e66f5de3fe8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPD731800511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08adc624d9cfdb459dc7b59e1a8e1f8611781b843564afdc0adff4d856ad868c. 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/JPD731800743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1d954a7857314dec4dd6077333696ea24328fd992ccf232a32989daa31a352. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/JPD732100557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223fc042f4e7fb37ca43c0a9137eeced1b0b35f62323ae56aba91e66f5de3fe8. 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/JPD731800511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac460d19df626623e7a6d5e744f031e5016e03de88c86a056af9f95303380623. 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/JPD731900568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8df7285a69dd8191d087b9ecc5e3b9d8085dd290a830b80e807896c9e96ed9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPD732000448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa6b1f0efc47f7c04e417bfcda476bc46cfdb01e029cc6d63809c19b7f83ce4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPD732200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa943d531d2e05e4bd2356dc65b29c567bc7fadfb3267e0719acca1ac34ea9ff. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCJPX2387954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bd537da4da511fb7a03e94c0ccabe22c7ca471e24a920214ede15e9625c5bf. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCJPC2425820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396ad1e8d212cb34c854ef4c90509a85f09af6c05028b0963af8b4d33845c9b3. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/TCJPF2500552.