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 0xe9476149ff410245189a2d7d01932c8069bc43d9102d3de26046ff75ef1c0e31. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dcc0c3e0-c6f6-4ff8-99ae-b2d06a82b1ba.json and https://artists.proofprofile.net/proofs/artist/dcc0c3e0-c6f6-4ff8-99ae-b2d06a82b1ba.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 0x5d18b132a5efc8a5522c755fadb11c37eaae7207db38461f800066a862389ed9. 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/UKZJ72200925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b92844c7745c6dd972240b9877ec0ae13851a0deec2ad74a4f1bfea739bab3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKZJ72201010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e2e3376a8e8141d6402090938f9dae5805eb27674b9665b44acd19563174cf. 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/UKZJ72200931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f7c35d02cea909ab0e4de0e6152766c790ae07bd4c4493280e6d5531f5de0f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKZJ72200933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a212e50ad1ac2c57c507e7784c1fda533818126b6c92e08aaab7a69605929b1. 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/UKZJ72200939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faf5db05efbecd0c8d3dd2fb0befe9d35ae47269f7b7059c907743711bffc15. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKZJ72201075.
I Dream of the Three Card Game in the Street
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d3f41a7febd491d97966e1abe04f0c0f739e47366552adf9f719481e8bd52a. 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/UKZJ72201007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8439d35903f8340d4d4efdc38925aedf0069381b749ebcfa99f6ef57863e64. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKZJ72201011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7745006f5ab4844c51d9b7f3a629ca447833037a4b3471129755830bb0a5d90e. 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/UKZJ72201019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4167a3087539f26de29d8ec2e64a00596da10d50183f294008c5cf1630ab8f72. 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/UKZJ72200929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d75e5314af8e24b5fc3e6d92deba2ae13113cc3c430628ab2aab888baea034. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKZJ72200803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb0ceb7e4a1168a5cbe56e03c0335bcd118ca35c5a6f33c8f9f8ba10e4ba574. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKZJ72201081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed89cbe1b3a9fb82160f282459a8994478946c075ff3b7d907485de5b93e95f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKZJ72201078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea334c8cb16a0f5da7b4aadd2c789a1dc2ddbbf8da9e2cfafd4ab2661d263f7. 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/UKZJ72201079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdd805f79f26742d4adf90f9753adbecb4a2942eb8414c7ef2565f52b21551d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKZJ72201046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7547af1ad0984150a863ab461085e7d54a8feb327517ab118d54a66cb230ef7c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKZJ72201053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bd9353a394cb5f7d3a088ac705b0fa7bd26f575c726283c805bc95eee77266. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKZJ72200906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03f6a2fc5090e2c234468dbc49fc1ad7d5e30ce41d78f26dba553ad19031a95. 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/UKZJ72200892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1921dcedd2d3b776be34ec6cf84b4f132845c67895f874a9a2c7d99e616f12db. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKZJ72200901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9334b2180007972c5ec5d36837326e2919f89234c68b0430cd6f8fd02e1e527a. 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/UKZJ72200932.