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 0x616521e05be2a35734593fb270cf83fd7b723a1c7c8343d81d180d9606ba405d. 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/a95f9cae-7c17-499a-8d6e-95742efd7e39.json and https://artists.proofprofile.net/proofs/artist/a95f9cae-7c17-499a-8d6e-95742efd7e39.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 0x0416a4f96e8c7b7ee408fecac8b808a7d0bed75364ed3eceede8cf33eeb7e5e8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPB452306133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d7a5c9f4a41a2d2c9e14de0395fc082d8afc64037e5e1254c6e0040eb06ba6. 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/JPB452306134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2a18d02a9e3e9ebe4fd5a07cd1ce29febe87c843c46017fb857d154035fac6. 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/JPB452306135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516fcfe09e78d23ce00e0335ad818606acbc1584ef09f13ae70b26afde69c814. 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/JPB452306136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890ac2f5c5f34f147113cc72ac402325ed442e043a0879d7f74f8fe3937084bb. 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/JPB452306137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719e72c7c0e86d2ac918b0c530ae3c3cda2da128f9eee9d741b8734421efe745. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPB452306138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ab0bcdcb3247a032c6fa430426186f31786c441657a613cb747c22e83e4a26. 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/JPB452306139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2de101fffaa23b672a8eca08d24139e912292917e2c4ea52e24b3126964ff86. 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/JPB452306140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4af3a4a11b84ca0a1558fed7492902c93cef453f64bbaff1b7f8a76d9340b9. 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/JPB452406342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a00213b1df8ec0ec61ad43fa71dc8a476f02d265e3587a9310d8d52216cdbfe. 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/JPB452306241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac258b1abf8ef0600a37bfa8a20d13f488ec9f07c932c28683ae02290a4578d. 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/JPB452306242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fbc871d0b56644db014afb3df1a310acd199c86bcc18940849421da9fd34d1. 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/JPB452306243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0feef995ce20ad6265ab3bb5956d0516ec947b56da21b8a2830a38e13991b5d1. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/JPB452306244.
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 0xc75019ed1e8f2ac74db64a07dd0a42227e1965b4758cd1c535203367cc809475. 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/JPB452206117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a84fe16777ffc1529b013383ab7fdb585b060622ce422803698d9dd09540ca. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPB452206089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fecdbc2aea649cfd9106a6e152aa2abfa0760305d18499f9068606784d8c52a. 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/JPVI02102864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26acf202b8c24fb3d046d70ae34d7283d2f03b585f17506d7709bc3c5a13c85c. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/JPVI02102862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcd253b8b0b37ded725ee1f4310894c0c56e71ac1537ac431faab528d5a4ccc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPVI02102863.
神様は僕達と指切りなんてしないぜ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d13960dfbbbdfd3ac30e45968f75a5b38f197124acc25c2fb65665282a4291. 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/JPB452406453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a5614aa4981ec938a8d488052f26e88b08b5c3063016baf0704c32ac8a5ec0. 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/JPB452406454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6996dccba5eff3724c5eaa4ecb5f03bfa5b904d2e2d6ceb4c8b52a0ccce5cc6b. 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/JPB452406455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7805e9ed8258a04f068de97711948529092f9ccd5b204a34226346d356991a66. 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/JPB452406456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c801c64bf77f455646e1cac7e726cbb26756533c81ebe4857ed4ff2404299a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPB452406457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c696845961022f3e547fe06e1ecc19d403423211120436f22f25bf7b144ee3c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPB452406458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7265e8efb5449c8449ab834df8e00adf4c3d000f0c29b6be34b783413f6739af. 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/JPB452406459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff6eed5c34624f7ca83e450bac016cd9d126966bf6aa38a8135467f31c0d2bd. 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/JPB452406460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c14da1f3133d574192d3ffc4665abfc8e384ee6fac9de777bea4269dcfc7623. 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/JPB452406538.