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 0xf141ac14a19a57f7c0b5a7180bb03046bdf60bc26d6a74fc4dd010910548c3fb. 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/4afe1330-4cbb-44f3-9d81-9808247efa8f.json and https://artists.proofprofile.net/proofs/artist/4afe1330-4cbb-44f3-9d81-9808247efa8f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ミニモニ。ジャンケンぴょん！/春夏秋冬だいすっき！
ミニモニ。テレフォン！リンリンリン/ミニモニ。バスガイド
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 0x7e9e0984432bff56a635ddccffc8742e5bfe7d1950d646f95738e5ea85a94190. 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/JPA600103160.
minimoni。Telephone！Ring Ring Ring/minimoni。Bus guide
minimoni。Hinamatsuri！/mini. Strawberrypie
ミニモニ。ひなまつり！/ミニ。ストロベリ～パイ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35879dc7740aad11e5d7c15fca4d838eae223e4490d67c48cfa9c6c5fc293209. 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/JPA600104680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd46518874961822cbd9e94ddbcc81357f2192d0ecfbad9d0fe4c33b08fc4743. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPA600103150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab19b852b9487ed9baf0e0d42e3e3ef1b6deaea8c8291f0a78efc8e5a889664b. 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/JPA600200970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c291abff721ed67232fbb2243b69d0b10675780a9982be0155807f907f2ec8b. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/JPA600200770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f19a6f25acebe592418e08afda2c1ae1517046732f3dcf150ef2dff2222629. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPA600200980.
すき・すき・きらい・きらい・きらい・すき。
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17e0c6dc38bbffab19d4c6066018c3643eeb8820954fff9f2a98e7eabcaeeaf. 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/JPA600200990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdf81ef752e86f02b2d1c5c2ca7fa4510cbc9810a3fca7275e270c8cf828c97. 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/JPA600201000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884afa4f36b19fc7f4c578184cad3b4a1d565532a00d896c3feac6690138a396. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/JPA600201010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad6642f7064da3e59810d4c0d068801b7ec44f2d54e1be93b2bb6a29896b3df. 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/JPA600201020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35879dc7740aad11e5d7c15fca4d838eae223e4490d67c48cfa9c6c5fc293209. 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/JPA600104680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a799fb8f8e6f54262a1df84ec1316ab69ae1d9c9c5ab6ee3467285d92f5d2be. 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/JPA600201030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9e0984432bff56a635ddccffc8742e5bfe7d1950d646f95738e5ea85a94190. 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/JPA600103160.
ロックンロール県庁所在地 ～おぼえちゃいなシリーズ～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c092d6182981915e22afed82012f1e63947420a67a9383a577e421546e4cf4. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/JPA600301140.
Rock 'n' Roll kenchoshozaichi ～oboechaina series～
ミニモニ。数え歌～お風呂ば～じょん～/ミニモニ。数え歌～デートば～じょん～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6146f37a51321e60a9568ca24da5d40cc502dbdff2f7accc6a2f726e9f5d2cab. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPA600301350.
ミニモニ。ジャンケンぴょん！ - 2003ば～じょん
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea7b3091f7bef47b82efa3842ace0a1968ddbb9d74f0e9e35ebaa5936ba39fc. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/JPA600301370.
minimoni。kazoeura～ofuro version～/minimoni。kazoeuta～date version～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657a4550158078306b2fcf6682b7d21a5e36ea26db7b3d394efb23cb10bf945a. 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/JPA600302110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e97ee24fc55dfeb69b72a4de8de421ff6dad6bc3f62ebb5623d1ab2b24325d. 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/JPA600400240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316666ad3dfb7cbab06d4330fb151412eb98c57758bd2e6f77fb73438cc45e37. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/JPA600302390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6124e382f620be46fd61bdd3a453eeb0c61bf1b705e48a4c70d7b1518882fb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPA600400250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bde647e9d0466abdaf3fc0d2c75730b3755098e90a80e63072215e308793e52. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/JPA600400260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744e2c47897dee498d4bcde5f911b0775f7e85021d8c7b458309c81c1e9f38a2. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/JPA600400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2101e7185313a806e5ec1ad878503367a65623bd49a8ea0e6b1ded4cd203e30. 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/JPA600400280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e621b79563cef67005492380d1cb1fb2098bbf7202a26e96c90952730d0f37. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/JPA600400290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36b8e17f99055885c1cfe288d077cdcf8152a6269c8ca10753a64fdacbb77e2. 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/JPA600202490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56efaf0eed326f1ff988792474cb8eca7661fafbdc580fcd0d393a5cf5a2d04. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/JPA600202480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959e8fba77a0b08838f13a0f8b12b5a8efd76bda968b386d6cbb3930f07928e5. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/JPA600302100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48204ca5db9175342a36da38e4df71f0e8f329310d4bb11e3859ce37d9c03f65. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPA600400840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9ffa309e11ca7af8bc51c019798dc1cfcfd581aed16714cdc117042e98d6f2. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPA600400850.