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 0xd14cc8baab2046b7b4d0f71fd2627189f542949ce8f0245f864ddbd81dbc8a2a. 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/d3789aaf-aaa2-4ef5-82ff-399cf1d6ad9a.json and https://artists.proofprofile.net/proofs/artist/d3789aaf-aaa2-4ef5-82ff-399cf1d6ad9a.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 → block OTSBitcoinBlock must exist at that height 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 0x00490fb08c94cc4bd91f6d903b4e99c7ed53b62138b20d258e699adcb96cb153. 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/JPCO02029340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603f1ffae84b3fdcb007c5702cc28ef70387a9b21dcfc2c91590a7899697dd0c. 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/JPCO02029380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d033e053e6bd442f1c8fb12c6bc1152dc759789c464115e5a0da8bad9f291e1. 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/JPCO02234350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb60901afff3242a04df86c922e8c83facc46862bf1b50f8cfe43f0b19b949f. 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/JPCO02224090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9799e9ebcbcc2be3b673c22ac85e54be67473c9cb6a12dda7034babf301526b7. 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/JPCO02134480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7475c1686377d161598d96817f2e4de40bcacf6999906f58208ca5e1efd230c7. 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/JPCO02104930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dec4a59610848959cfa21c35f6cc05ebaa3bb846c1a19073922b1a819038c8. 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/JPCO02108130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa698849fd06193016dd37671fa2b139b7097fb39d6ebbad753393d790a4b70f9. 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/JPCO02108140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7475c1686377d161598d96817f2e4de40bcacf6999906f58208ca5e1efd230c7. 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/JPCO02104930.
恋じゃないならなんなんだ / キュピデビ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7ab670285e07ee02481593d58f9ee436007b71fe80cd27df540414defef160. 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/JPCO02017040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9795e790861f7d76781d4218cd0f09f949cc39736b6ce3cafb60c1b1ea79fcb. 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/JPCO02017060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d963be0af9038fc072e8c4d6b78f0dbeadf265a09e69bf6be8024bcb957291. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/JPCO02017070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3aaf9d8e2bfdc7a5429871ce3f636831e5f50d0c7ab1511a02fdb5b28180f04. 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/JPCO02017080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306e7e8bf761d0794984e25cec0f046f82222bb4de2d1d6258ec9b08ccabc73b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:30:21Z), 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/JPCO02010200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579f39b6193d8ec0a8740b1b93845cc5c02f1b327acb9a0d70971d636e3fa4c9. 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/JPCO01928190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc656decd4f85157553e59ccf2bbed4348e65ce4aef0549cb49ba0ea17f65da2b. 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/JPCO01928200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354acad37733a7ea5cf8d1770936148687734a5d6836c2e13530665de8b9328c. 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/JPCO01928210.
Do It Yourself!! ‐どぅー・いっと・ゆあせるふ‐ Theme Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75b63e5d5bde8098e579262484e90074e8d53184aef4bc5090b2bcbec98f0d1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPT552201160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1166734f1dc486996e8a9c1288ef9b071272047bbc54d1a7c22c65111e2cd95b. 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/JPT552201162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24be1e6342103b24b7ef83047ba5615cdc8530efcb68c3c36f3d64e9c35af42. 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/JPT552201163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67057d78be79ffe093b0295b8e97a70cad752beb66740498c6ea134727eb466. 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/JPT552201222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dd8ffbeea4bfe682d54760f5e4abc1482709f21525b4cbef2c0f7b559db321. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/JPT552201223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfe1c60fe2162990042f96f7a33456281f0a46fd673e8594a633b66ccc26109. 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/JPT552201224.
Do It Yourself!! ‐どぅー・いっと・ゆあせるふ‐ Music Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab6afa7caab8039dda0484a4f54634a6227d7cb0c4b0442819a6f9d3ee243cd. 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/JPT552300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83dfea831d12c9fbcd8712a4be4453592380bc65499215a2c529f12a5b5e241. 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/JPT552300086.
どぅー・いっと・ゆあせるふ - まったり
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048d7ae34d0fbdd08723fd510aa1ff4e89adcac775fe5795f272dea1290eefa5. 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/JPT552300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bb955885da3528a4dc80d31f4bb1b86a4ca3c743391227c5dd383e27bb3671. 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/JPT552300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e371bf73042ddcfdd837b645988415c2b277a284b47358aa22aeff430a311fc. 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/JPT552300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74caca1efe6c2816612111b748ea84ff5fcfa4efd018f3f1b44eb3f5f0626bb. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/JPT552300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8029d241844ceca3eed4e0135dd9f1630b2065b3a9ac83d26bf0bb68a0c0ddd7. 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/JPT552300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6337ea5abd225a35f9c64e9ff6837dfd1725bf9ae68741f74ef56affad278a46. 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/JPCO02002670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f430553a269677fb9487c711f7d2f298289d756719e6752ca51f74acf6898a. 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/JPCO02002678.