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 0x583eb44e1b556204218f0bef2201df8d3a6965e7d84ff6b28bef9b3f88cab0b6. 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/0a7861ce-ab8c-43a5-85aa-7a34aa6f3c90.json and https://artists.proofprofile.net/proofs/artist/0a7861ce-ab8c-43a5-85aa-7a34aa6f3c90.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 0xbeeec9453f965041ee82c79988df0bfae5b3055178ee8643231127a1a347046a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JP92Q2400348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669cfc09ad422cf668c75cdea0f0b761c18579db17a817bd96465faa8f6fb2c9. 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/JP92Q2400352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30f56a03f7f8bba04cc98ec7057841bdb0c566f4b1e972ea3eb3b692a082711. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/JP92Q2400355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e6b066dc7f9e9180350c1f2c6ec0c17cb6db19c867de831a6d3a4264ac150e. 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/JP92Q2400356.
エバーグリーンオーケストラ (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde8b22f463612ecb790faa485f4fe4a62c88a89154543b7de9470039246d014. 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/JP92Q2400359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc97539e4a4dd25697b1145033e263bd139afbe97ed0cd07ed45166e184242d7. 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/JP92Q2400360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13059f7db48af6873161a4a3344e076847dc9dd388132e934d1a08fc588d2bd. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/JP92Q2400349.
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 0xbb63f061585ef36a3dcafbbbdbd6d315814f4a20c5023b068280c89cf4d93d93. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JP92Q2400350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dda4eee0245f753e954187770c065145628c72cfb1b56b4694c032397126b19. 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/JP92Q2400351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273fa4a8ead1a4ca67040fdc737e306ffeb720ebfed45f99a04901a18dbc51cf. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/JP92Q2400353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6d75051fb4f05c37326565c2a69135e7cfc1d290c93a7fdf3dd6b8085db66d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JP92Q2400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebd1e3f07364139aedc131176ea79184b70f7a5d066be6e5ab304c3d9338236. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JP92Q2400357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc543f01eb3b0bb87c8e2185539a735797449554f60042884591cfb756c8d1d55. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/JP92Q2400358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851c30e82cbae5393741c7670f5dbdbc19b46db912f0cd86ff6a0776536da551. 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/JPE562107502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0db7a1282f45ebf023800169a347a9932f1f37d96cfa05972726d4efe04d42. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPE562107501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180a979c337c032354349482074760029942a522983a1f0cec3ee8ab19c0f89b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JP92Q2400361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbade897c8d8b3f01609d7e16250a3d87c715e9c61cb0c929f313a89fc0ff29d. 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/JP92Q2400362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06a9112bbb4a140357b3376013833946f2f5352e5ee734227ee1f9bbaa713ec. 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/JP92Q2400364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd89dcbf2490d2e45909981200a216d20b22829ade5d9636ab96d154de16db4. 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/JP92Q2400365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11448e7a2ddb4272dae8db7a5643522d6215c32d57e737d1f864e093570d372d. 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/JP92Q2400366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b0c2862ceeb6790cd2df797d9c94bf72d512db32cd85e4af197ae1003ace8e. 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/JP92Q2400367.
シンデレラコンプレックス (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf03ec01c76ee194b090f3e52835c36a57e4d3afaef6d1db1658d7c2666bee0. 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/JP92Q2400363.
ありえんくらいやばいけどどうする？ (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cf51e741d046816c1b8e32350c180bae5530fa844b043cddd54b829149f6cc. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/JP92Q2400368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadf1799d2233d099262090c3757b5355eb6c0a7c8f55b2e6be7e6a6f4f46f1e. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JP92Q2400369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079c6451156cd509153ac3ae507f460a02ac6e1768b77e027e93e91352b66dd0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JP92Q2400370.
ありえんくらいやばいけどどうする？
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bff80af34fd2f9cc57621a6c5947c22ad079fa0d03d49956efc0396c6f437a. 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/JP92Q2200949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03955df507b0319f459b9a10a15ed54bcfc477550c5b92ef73eeb983760cf814. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/JP92Q2400584.
いつか君と話したミライは (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2a789dedcdfcdfeae6a3ba97a0fa1a081ccb0235549c00e26f45b4abe6ddf8. 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/JP92Q2400609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26651cb40010c0ff7a324192083b170de3c84036eb8b9b148119fe4cc5d1ac23. 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/JP92Q2501958.
ユーエフオーにさらわれたい (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559275f74bdc82faa2ab9525201e59537028255be7ff20c7252e68401779b7d8. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JP92Q2502191.
Brand New Day (タケノコ少年のセカイRemix) (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa8cd73ec302e82d77785f383c44c94a7cc94bbc311d84b78adaf216d947ef0. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/JP92Q2301454.
音楽的同位体 可不(KAFU) COMPILATION ALBUM 喜色のアシンメトリー
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827732f96c3cfc0c539f9dbb5b83756294330e055a141ae720d25429af223a1a. 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/JPY392200478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a662b6c984b0b9bf88cca1eee4f431f79761d99fcf9de7b3f64531c9fb1338. 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/JPE562107661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7be7b6f8f80f79badc89d4896354f06b6cdee894c26ec84eac4ca6f85048a0. 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/JPE562107663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642a732b59dc968dbb5ceecd613788d01f26ab4b8a94cc23c27437c56e6318cc. 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/JP92Q2301456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa31b3eeab7375f678fbcc1796d7f366e44dd0fbb7a90227b8131489fff2b72e. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/JP92Q2301039.
音楽的同位体 星界 1st COMPILATION ALBUM メタファー (vol.3 残像のメタファー)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe05984e093ce82c20ae87ee5c9e01041a94354ead2a8fa07822fb2501453ac. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/JPY392200707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d0c2dabe1a93fa522e43d724d8f8c41ebbd1509f3339ea11de729d32deb796. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/JPY392401823.
フォーリンデッドリライブライフ (feat. 音街ウナ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd94d309a4df65846ccd467d7d3bb5ccc151b35b5393b0dda0a7e9d45c19592. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/JPE562107666.