1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3082ad4bb3ccc3adcd7a52a83060507f6a14eaa02d3e5c1d0ce5200b4bfe5f23. 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/8d99a9ed-152a-4d83-ba39-214588719fea.json and https://artists.proofprofile.net/proofs/artist/8d99a9ed-152a-4d83-ba39-214588719fea.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 → block OTSBitcoinBlock must exist at that height 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 0xc72de74915760f848f31b26095a9d56235f987b39655df7627c40119559ab09d. 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/QZ8LD1919544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9583361c28df43009626602fb663a506df33882650909ccc7913495667e4c122. 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/QZHN41997959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e11a8c0ac037734f28a4ed02e2665307c64947c858e818704a6999ec6999db. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZFZ22280330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851bfdcf2809030cc1a41430963988f1344d7bd3925cfc9a62bdf0f4ec8a0359. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZFZ22280336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e75c1dd1bf2474447698ade5f348be7d73a2b575c01f188e4cb1df1b01b4665. 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/QZFZ22280337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a678095a104e6e696d4df98ee364b34ecfc35f405e27122154a93db24aa7956. 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/QZPLS2315032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f8c90cef8e1717233841c2d365f5af4ffd26fdc7f309907739504e927aceca. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6P2492599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cf83cf6ffda8da06b6f3f3de65f67c688ee60a872b1a73bfd1baa3805bf282. 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/USLD91771181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d889ce887e5b2a68ec872c3e159bf5bdd75fea80c5244ad87d46be4702262bd. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USLD91771182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb182f279285e8f6e16b9960357936ecde48087e411f22b39a89c8d11e9cb1e33. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/USLD91771185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ca61e1b66c7c98dda837ecbba500794a72a78d59a36bc361ef2a3b67590b0b. 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/USLD91773426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd226f66f8a69323ce021c36991ddea0bf5c9b008b28601f811748a6645fe8c2e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USLD91773427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7352967bde13b01933dbaee532b1035ccab927435bf72eb11c70aad9c402ba44. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USLD91773428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adc7120874cb47136ed052a8bbd93d0d8eead64655406c0d34983627fa06571. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:50:20Z), 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/USLD91773430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cc2dd481cf423abeed18d2a6648c81da75365711d3051332e4d4f5fc079833. 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/USLD91773433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04a772f26b04e9f12ae0fb5f79c2752598d7d3b9c8f14214b095ac73058f4aa. 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/USLD91773439.