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 0x2f0a84fc2ddb50a7cd1a15560ac0524d0de7a0c8896fd0d6e8af8bcf946a8ae0. 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/bd4a4f01-784d-425d-9387-818fa5b8bab1.json and https://artists.proofprofile.net/proofs/artist/bd4a4f01-784d-425d-9387-818fa5b8bab1.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 0x58bead3a649885dda990ef440c3f832136bf6a892c8aeb6f68e512c8b635ee29. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/JPCR06507020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709ef32ff02ffd24e3867afb101cbfcbb84442fdc9cfd50089b0fd422b040545. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:12:09Z), 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/JPCR06501500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158680865cf0ad867c3cbfc3031636c84e074eb6ab8bb69d17498d05121cb700. 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/JPCR06605340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad8fad31087b29bba9b7826874661a8b268b61ede2c48a434c17e2760593e0e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPCR06605350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e9d076f2fa57d284abfca1573543941121d11c75062c75308469e7d9bc56ab. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/JPCR06705480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13e9586bd902a37976eeeafee58ee277b5fdb4f63f5d2ff8a94ee9a1232eb62. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:22:13Z), 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/JPH400200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1600376f30312d382571e88eb5749161e41a4197131794817682ae8c2b1798bf. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPH400300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa97a6f38b4b407c8a52f3f45bd024feecc626d99699c5aff354c37eb2d27c4. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/JPH400300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a00f325793c6149d4f1dd4d055861107238f7353269d0431934da39f04b0393. 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/JPH400300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303891913a2205278526b7185f6324322300f1933ef345d96c1c4fbfe51879d9. 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/JPH400200022.
シングルコレクション・クラウンイヤーズ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c27d2b97fd0e9ffd4826fa3eb8e6bb9acc4859ac043fe3cdb5f252a4de7bdf. 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/JPCR06706370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc3ae0a2412e7c48b73cfebf01f64bf4d6a2a6cb119184bb660880cd2c86829. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/JPCR06703780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5deb3829756b2ae340e1dd8a52acc7eaef8e281c3060fb15d5b14319daad22dc. 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/JPCR06604870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e5e854c5cf266a4ddf59d20254b552c6d1a8eeb40f0c455ac69c02a742e0b3. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:49:14Z), 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/JPCR06601480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e719ea1593472527a020e8605a28823477d5ef0c5b684757fd68ac9b4d5b90. 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/JPCR06807400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c94a58def34973ed5264496ee8b966fc9e804e4fc4c0c1e7ac46582c6cca7d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/JPCR06704820.