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 0xac378a360cd36497796349f20f80b6fd0e0ea4862ab132267b0a0cbcadb31c60. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99fbd0de-c23d-4ea7-9f14-5f95deadd381.json and https://artists.proofprofile.net/proofs/artist/99fbd0de-c23d-4ea7-9f14-5f95deadd381.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 0x17b807b12e78b501fcdd6bccd5e6bda978a6ccc5bff74dab440b2e07df28ad89. 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/QZQAY2304423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9320a6089aa42e8249418dc25368514a00098e7c26efa05fd845f8f0af3b2869. 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/QZSYP2332559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc97f073799f438ec5e969867f5a19037385525fb509d9b12333f9f6e62a48e2. 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/QZS7J2346361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f08c697985b75a956b3f289571ee79cf9b9d65cfff2847301c8ea537efd4fb1. 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/QZTLA2353038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a7c66b7e4029c3cea7ce7493b22debc89c00fec6f3ffd1281273d61577c5d8. 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/QZSYP2257835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cb8ada78e59f769de2c4d871ef32296b10e9b218c58b9fd41eb8cadde40a85. 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/QZTLA2482743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890e2e8fba28ca0df528a2a2063bfaf3c80b7b24dc3b6031ab7b8b9699f89d8c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZQAY2415105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc877cbc13849c6b1776e42ad8a9084e4079a18c62602ccad400035a0accd7b5e. 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/QZQAY2429316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bea10f62f04ef0db4dcebf41d7c995a311050210f90201f4325e314e4d556a. 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/QZQAY2474331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541b8cf96f9b31a8b233fc19742acb0057d174cc7301816dffc84ee22a74808e. 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/QZQAY2412033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4e85e0b1cce63f017209442464429e9df8db4224803bfaf3694aeb01f716a0. 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/QZQAY2434156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9de459c58b09aa48ed1c2297042430e502830a85ba5ef8a1e6f78794f31eaa. 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/QZQAY2464765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78bbb05ee0c07f9029205a6896979212cd3992efa8cf7ad82ceb14974c5455b. 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/QZQAY2493045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97eacfa5d86e9c35d5f3c1458ef083e910b42c6745e26b085244ee1846fbde0. 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/QM6N22493199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96905a1d09cc7a7054e4e6af1b826e71e6c9e259a244448e508b183ffe5ad14. 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/TCAJA2417317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577d568cda2e742a7f20531bd979c0096c5374aca5e8fc78ec69a3a932bd47cd. 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/TCAIP2479427.