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 0x23414667b4a35dad1f57d3a779dbd45260e968e8b110f6e68106eb5b06dd86ef. Chain 2 (Bitcoin): anchored in block 954017 (2026-06-16T23:38:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3588a73f-2c28-4ffe-8c1d-66a12f02383e.json and https://artists.proofprofile.net/proofs/artist/3588a73f-2c28-4ffe-8c1d-66a12f02383e.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 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 0x30ec14169b245dbfe3e89ce7e3e624269e3d3abd34ff1ae68a06d6402ad8f80d. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/JPVI01903963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdb9b9d35afef5ea3bcaa8e24cc60549ef1b00650d84ae2b8a711dfdef5808b. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/JPVI01903966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450350f8be3411b981751787ada0ae537d9b58fbe5e63b9b37a227c73a38a4ae. 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/JPVI01903967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e65283d091b06f919ba92498fe6c0328686f9d8034d74f6a5074d7735ee469. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JPVI01904053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1503d3c6fa14e9fe20095772c921e03b7a3e61a2bceab5d9ffd22df9de574d2. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPVI02102646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc847a0f13a49c36d839f7ceaafe3b3565f68faef5f29acaaf3e56ef588f82bf. 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/JPVI02500878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae927afe4002abdd1ec48da364785e77f9904fcad38ae528260d39b8d8e49b6. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPVI02500851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6900bb033992aca3c2480b87333d2b5a09f1a06ea5b7a832a8d01a28b2d669. 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/JPVI02500879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859e42e7d366038231216a2d93b3b5f7ede2a5b45d8c1f882c230a17ce705e7a. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/JPVI02500852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff06fc66902e3e4005040edb9e12ce2fcd374773f55958a344509fce0d115a7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPVI02500880.
追放アッパーグラウンド～誰がために戦う (The Best Album Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda54545138beb0e7e240950e3f9afba3f842d563b66f235b623dc470fddbc372. 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/JPVI02500853.
魔を統べる少年 ～ 魔を率いし少年 (The Best Album Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1ad4a4ffb7eafd161890024c2ca7853f990f7104405f126142c7fad9ccebaa. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/JPVI02500854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4af14256257f226c0be567d04a34540d9f1093a4b7d98502351397945b35825. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPVI02500881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa76cb0c19ef5c3fc13846e7431f87ba2e67dfb2009957e7e675c5e06c63b65d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPVI02500855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e74524655ccfb14f9e7b60e199bc9b77ceacaae9f718d23d7b575fe62e59e0. 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/JPVI02500882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b91d731f79d82630b1b9316008554b375e6832097357decdc51dcb074ebdff. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/JPVI02500857.
チョコレートみたいな大事な君へ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a57aeed4ec225bf121b058bcf22289baed6142968f14d26de08302dcf7d72a. 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/JPVI02500883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda78bfc50cc431d78e01e396698221fa75cb1f3ce830cc2343541a9b91471b8. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/JPVI02500884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ba0e752619b684cb3181d8a089a1e3026428b93dea74aac528d52af512b9c4. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/JPVI02500858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a61579057dd32bb2a6a54cb2dac9df1be4215d2b75c6d33715797214df233b6. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/JPVI02500859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e32645320fedd48afd1a362c3d3fd5b081d92b7c72018f340630269d4f6427. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/JPVI02500860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca25609992b868493486d505202f7c1f4892e548857e6844a7922e92334845b1. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/JPVI02500861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1f538dc8cb765364752efae1b4d7028fa2311c7cb31923d808ed6305277542. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/JPVI02500887.
ヴァイガルド防衛線 ～ 彼の日の約束 (The Best Album Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164598d01ac99cce867cb5bc675c514fecbe6bdcf91ce9bdbde2e083440543a2. 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/JPVI02500862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14d4f5d701f15dc8af81abbdc8dfc77b86303c1b49fd90ac723f49f37d77dff. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/JPVI02500888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0db5dd42830c00e1bffb62f84e82c634a9ebb046c658ed0d02a25095285046. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/JPVI02500863.
Lovable Debris! (The Best Album Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5034f6f7744597a5dfa9c0da7d2882dd3094534eeedfd4b2c40ea439473c9c. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JPVI02500864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717b92a198be2bfff1763c498e4d945be8367fd2f50a00d614b67d77e8e54339. 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/JPVI02500865.
#青の組曲 from 2nd Concert (The Best Album Version) (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8432c2c2f1c34092ef1a65a6cf1ed7226d63c1f22e50c83159400bfb1cfc3bfe. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/JPVI02500866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ee1b0a3846813d78ff907af2ba2c0eb11600b9087c343134ace500d03c98ed. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/JPVI02500867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dc548352e58a0436375485e30439dc5c511b04288cd349ed72db9806fe6afd. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JPVI02500868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909189da96c64b10fb84e95cf831fe066dc6fe400c17505124bcf5e5a735632b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPVI02500869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabab9515c79e83ad52494207ccc3072af33aede7fa51d01c7feb9bc627973bac. 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/JPVI02500870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8e9501574cc0c558b639f4224d2a63faca595dec3d8dd14b90c980f55adfe1. 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/JPVI02500871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c94490471e28bb67856663b26a81be7eb927b3e84004db4045aed3d98c8d5ba. 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/JPVI02500873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880e1607c69d15f6d2c3aae453ea7477f5b9d57130b20387cbb0c627d3903d56. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/JPVI02500874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7307c26f15b3caf37723a4ac9d551a791e5aded8a74082cc9ff7163bb5a143. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/JPVI02500875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797917a7585f4c33d250c67f282806deff546ce82e29e23b62516492d58ad94d. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/JPVI02500876.