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 0x628878c635823b8f27d34c7a6bceb98e61444d7f1e0b0a562b8cc1e6faf56d2f. 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/f1f15723-3f46-4595-9d44-de64387183b7.json and https://artists.proofprofile.net/proofs/artist/f1f15723-3f46-4595-9d44-de64387183b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Imawo Ikitekoso / Tasogare -Summer Memories-
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 0x3d8768ef0b718c72b95a3b1a95679ccad80ff7c4ce649c0627b5a807579e46da. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:22:43Z), 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/JPY201304484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4f7158209c830462d6f846fb838b718c5989293463df9ec0e75d7201d0ca8f. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:19:07Z), 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/JPY201304443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e2bff37563690468b482de8dd77a3146484586b95e02b659bd445b792e636e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:40:33Z), 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/JPP301200671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912f13ea7352547b5f12eb70ec15819a4fe739afce57ff1df9fbc8ff9d329aa1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPH371400419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d26bf4287237792bf04f2b73d4a06be2761e69219a4ceb4f449f98ae915e599. 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/JPH371400422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae5481262da17f6472fb71d4ce39c0ebe463b344bf4a33e0bf803116f88e926. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:06:20Z), 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/JPH371400425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b29295bd09c43175a735a29a1aeebbe50dac68f1501c905fd27a0ab90a089a. 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/JPH371400427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb0172005fa54f95e86e04469f3485c8c2ef9a86b7630fe42c3d2ccc7550367. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPH371500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e79ee46bad6b3f177cbedf5f4f3072b3e3476a869a9f49c15b4e8bedaea5905. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:01:13Z), 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/JPH371500328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00118f3cf55ce645a319595d2133ba713950cb5bf945a63c927ccbc065848959. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/JPH371500370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8321ab2580854f70e153d320511a93ddc3dbf37c6fc06c32143fa908142cec. 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/JPH371500137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88360b0fb67c6c3deecd60052ff23915b1f6fb8c3f94af69a7fd2566153ef392. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPH371500372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221c0dc10431da61f1eba3e3eebbbd1c8651ec4bfa25dd5fd8184b21ff14b768. 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/JPH371700209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787f95bdfa77981a887de07a188e9d162a6fb3a7ebaa70fcc2e07ac06ff2dd6a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:36:19Z), 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/JPH371700211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac06dae73bba67c5f87ab2d438a3028aa241299013ff7507a4f0e0d162d58ef9. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:25:17Z), 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/TCJPJ1947398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028a98610968d2770f9c32029baa12f7f44baa02544b1fcc40a50e2ae4ced768. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCJPJ1947404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc656711a828aa943d8e8db2fb1b5d8055c72d82ffc18760f3472362e3365b715. 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/JPM552200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79ee0d8937cc582a4b625e4916c06c41b472db792bc5388363ffc27afa4885e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:18:36Z), 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/JPM552300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aaac9d92a3a962fb64a72025cd71d345c17d989062633dda915063bb9e62ce. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPM552500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3d2a28a77be2ca3a70fc5338aeba2aa28685a9021335745fdc4916af88615e. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/JPM552500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa951c64ec12c48f240f46a312e7847aae0e5652b0555b53fc6cd8adc7c3cc2. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/JPM552500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79ee0d8937cc582a4b625e4916c06c41b472db792bc5388363ffc27afa4885e. 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/JPM552300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96027668b8024a09ed5d5053c274c70399c6f1c4546e9428a65e19511afd7926. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:57:59Z), 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/JPM552500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a797e768309d0fef9b6f6045e74a2dca4fd11cde519d8dd5f454e8cbc99b4cf. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPM552500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17aeaec1eab212ca12ddf01c501555b2370535e18d8939c9023010750d93f552. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPM552500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc656711a828aa943d8e8db2fb1b5d8055c72d82ffc18760f3472362e3365b715. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPM552200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3ad391d3adba5df12524a93c9ed8553f22cf89abeed0e4a95ca582d5979005. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JPM552500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008f64eb228d38adf630a2e6f2304051deb7dbcd1c428794917e908254cac235. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/JPM552500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ab6c4c164aca9c20ad1810be21de20f0dbf83c0cfcdd7cd3a7d39962523897. 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/JPM552500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b943833788b67ad7252bc798e6c34f1e6d024a66f60a194715131ae178da9c. 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/JPY201807026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaadc782f3ce7c2f068f0371931dc22c49a47ddfac37b501ab74233cd977da0. 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/JPH372100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0aa837fb8753ce20f7443053e3c1886ba75792b2986d26be19b6986f58d42d2. 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/JPY201203755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4240f9694e4cec64624c6241a63cc0d860c6fa1593e45bc3abddbfc4241a768a. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/JPY201405513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5321d21323c36a37fa40fd4563b78b60829812d7ea4ba57658807fe916e5983. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JPY201102857.
KINKYUJITAI 3 (feat. CHEHON, 775, HAN-KUN, MINMI, JUMBO MAATCH, MIKIDOZAN, APOLLO, EXPRESS, KIRA, KENTY GROSS, HISATOMI, BES, NATURAL WEAPON, RAY & SHINGO NISHINARI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a779a917636d6099b88b455bc66bd129fb2da4c5bd36b5b4b11cb31b06a3989. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TCJPU2354447.
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