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 0x36212496f7208e478a614daab9acf1a5d7ec49b992effb8fdb8ec7bb29ef3c7b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/486d4ef2-3e3a-48cf-94cb-a4a496191a09.json and https://artists.proofprofile.net/proofs/artist/486d4ef2-3e3a-48cf-94cb-a4a496191a09.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 0x0e1bd0654b51c38f967720e5f82bafd690160ebdb023879c8da807456d6f3939. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:02:31Z), 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/JPPO01620512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f9bebb832a67e77283a58a08a42f705c3abe9d22fd562b32baf30bcfe0b23f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPPO01620513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5336b323b35d5cfe64951d1b04e763511b5fbf829608f099252d6ab30ace09d4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPPO01620514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6829c5f339efef81c2c6a0887e8689d3584e887db22031f1e1eb360140b0c80. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/JPPO01620515.
季節外れのときめきサマー ぴょんぴょん盤
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c62a7314c8652d0804835c7d793e096854717bf0a46a5c8fa2d39bec0dacd0b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPR651500056.
季節外れのときめきサマー ときくり盤
サンタさん・・・・・がやってこない！
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e7ab62b5adc68d84a964855bc3d3d57eaf6d12e3cee4bc7817b331836e921e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPR651500059.
季節外れのときめきサマー どんどん盤
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8b91c6d04d0bd32034650df0900423ab5d2341f32b625176d81c43d225a713. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:39:04Z), 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/JPR651600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234e8ddf3df635c2438ba68f363a45e31360ad335f3b64ef2cc47fc228a9a88a. 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/JPR651600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a82dd11bc6ae7607baf1a967236245a0900d44a02e3d739f8bb79ccb9729f3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPR651600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3caacbf8eed39fc64e88623a5ac93bee381ce77f7350b511b29abdbb4dbbac. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/JPR651500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bffe1c9670c08f5b54e5361b7a5fa3c3aa2ea03fc37a2e8791bc1e3b5cd8672. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:33:29Z), 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/JPR651500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57f7b2f95485f3583416624264c5f45f653d56a3b95a2e2127387fd9953ec11. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPPO01702777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cf46bb1eec0e1a2a46d23b3093501c89d01fb03a02895706a041b53a4022ed. 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/JPPO01702778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87b682033d1d9ede1ef446336c4c096c26f9f8f313e1e15229ccd60e81d20af. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPPO01702781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0153ed1cdd8ab81d844ff1803eff1bea9ea215d05a4f3e6ebff284cf1bbb6269. 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/JPPO01705830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47bbb401c011de06290c3c2c306d61ed8b9c23d9bd8b8a398e85b57f96bbb67. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPPO01705831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71eaf8505a3f88cc29cc1ed69321849d6152f1d276e28deef0a7fd6c1dddb23b. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/JPPO01705834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e7cce9e22081dd1769f1751e054b0012a6da8f39cfa98c71cabcc31f045610. 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/JPPO01801305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a29b9448660f1c11e0546a0f18a9526c550d7a3fb873eea9fb4b7ff40c1459. 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/JPPO01801306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a80d29794dc1a1d48f538c936ae8a6fd34f01ea6e3eed31a48044d4bc47cae8. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPPO01801309.
遠くであがる花火 二人ならんで見てた
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66f4132e91a9bb3369717d0ed1dc795622b654cb4628f940282871b1b63f558. 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/JPPO01801310.
プリンセスプリンセスプリンセス
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d15cc19ec276f4965d58ca9f9bc1644c2c3b81947ac46e36caeaedc04f7abf. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPPO01801311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23603ce27946259c32503a4455ef6a2909efc8e3ebc6f28c95ce586476305cd0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:56Z), 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/JPPO01801316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0153ed1cdd8ab81d844ff1803eff1bea9ea215d05a4f3e6ebff284cf1bbb6269. 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/JPPO01705830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2979b7485faacbb2323e299b6ed7201ffe7a2c580f730f1bbd7d2067fb1be8. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPB601803592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165cfd5c698810f6a1b505cf2266a8241bdcacaa3a904e03006e1a656cfb768b. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/JPB601901214.
ときめき♡宣伝部のVICTORY STORY / 青春ハートシェイカー
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b1f9287a5bbad2c5c4fd691c260379d71a09cdc8ec05496c9265ae7b332b6a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPB601901178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a03a8d5e35c197fcf376b9d61741ffa13536534f83b7583f2bd48dfd6136e8. 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/JPB601901179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37468be8488db68465c6c5a471ddec062600e70d403d707d201e4501fc799b65. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/JPB601901212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd2550434e03cf2ef44e19ab06105c6ddae59f7e0363a040d009aa575635912. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/JPB601901213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3440b1af554089f63369c4ce10819e647029beaf41026dbea27f0438e7943e5d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:01:20Z), 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/JPB601902558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e02a63796c7e92ab26444c76a799e993dbc95d13d0c97676706b959d5c1adf. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:51:54Z), 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/JPB601902993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80399541d0c4a430ba6976bcd98b528e46db8b3ef25858dcd007c7298f89aa77. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPB601902995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4449965da9b4a7c5afa54993f9a151d5379983518b1af683510f0dee8c150ce. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:31:54Z), 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/JPB601902996.