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 0x0f64dfe8da68d89f619d93db89f47e2068124e34c043dc8ae95093a7fec9f0ac. 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/11ea2742-ec59-4526-b07b-0079afa27635.json and https://artists.proofprofile.net/proofs/artist/11ea2742-ec59-4526-b07b-0079afa27635.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 0x09565f7ab3ac7c160129bd1d04f899ea18f3f1b1d4deff37cf4241f47917c914. 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/JPX402100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902f0d10a8429f7b7da05b4d4986d715b48a375a00e486ab06883d11e696dd28. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPX402100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e73fd709f83751b49a1ebd3977c63bc4f7705bfbe404513ce168bc1c9fbacbb. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:58:43Z), 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/JPX402100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3f350f8c145d195408729b27de4406b4692557df55015b2350ef23d5a3559c. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/JPX402100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c1cce22e5f2f900fd08ae31d10ff0bad6c0b5131f0e5a34f30b1abf46fd4ce. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/JPX402200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59075c92e52259f056b41a5516488540bd1c6fd29a769bcdf8bf7b45f570908. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:20Z), 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/JPX402200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7f5535280ecfa88fb18d4ecb2f44e34432957640a91a14cc62c2e61f6abda7. 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/JPX402200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1674f1b32d191251e979ffa7bd98ac98ebbfcaf8bb8c0360c9d45f703194b72e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPX402200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c3ca743aacce67bb8cf0a3c75bc7df763c4d1f26cb7c2889af510f85b2a562. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPX402200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd6708af399d3bf1c7cb5023cc4a04da682de4554b4e66d71110cf01bfe8149. 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/TCJPO2197583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c7c36d43050850695f7d6054f61ebd46ef9d1005ec5d17004972a5b04048fe. 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/TCJPK1924212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c1cce22e5f2f900fd08ae31d10ff0bad6c0b5131f0e5a34f30b1abf46fd4ce. 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/JPX402200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04427dd2d61de6c903c61e89e128b85ff7e7c5078412e2f205ad8b0a5effe7b2. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/JPX402200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73153136bc525aaaf05674b0aca773951e727c58acf1a2b6c17e9925ba8ac1cf. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JPX402200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6341f6077e3253c1cbe91cdb4b405781e8690612d07daa9593c1c3233d9327b0. 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/JPX402200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436f40a34292e69774979bb803ea10c8a58075372cac28f6c846afe8eb1828d3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPN2024083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5916397df4421f9b3944a809f04fe61f8a99614993254bccba5c6bdab456b2de. 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/TCJPK1924216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4179f7bd8233ca23ed13356d71248cd4dab9df22cdaceaa3ceba7a97f1fecbfc. 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/JPX402100084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4052533b6b271303eebd345851019087ad99af0b8068963182337e9aeeb97de4. 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/JPPC02412385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb272a369e73362742412a0a4fb19ae375b10f8ce8a29597e4978c3183e2c2917. 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/JPPC02412386.