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 0x4023267a091df3b728f1cc8a0fc88cc6d2295f8c1ec06b6872918d8460ba0d03. 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/401d10cd-50b7-4623-9def-307bafbf14ff.json and https://artists.proofprofile.net/proofs/artist/401d10cd-50b7-4623-9def-307bafbf14ff.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 0x2d95c56d0e4343fdb1c90bc38bc31482ac502ae181034e886d2cd5fa5ed36c4b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR10S2263085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7340ed8da895eba1047a3fa133936b0631a8edd1f746f2985daca2aec1da0bb. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/FRX762293158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49764229d9394653ee865affabf6277201328dcd230acfac6b3aab12aa7320ca. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:05:39Z), 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/FRX872258717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402ea679bb64c1673aa0ae13398b411306c494ea35917c513be607fa8601fc45. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/DGA052231901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3925fddcb9bb961eac1d412bf8a7be7764d3206a5ad2bb7900717189f11bb9e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/DGA062244499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0123104a06a6bf852a94976a02969663c2714992ebeda3311fcf77b5fdeee34e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX872376138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e2e6a9b2a7e73997916d5821ad56a7770e4015ea2a562a67dbec7d7fa63d68. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX872426257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a81911dabc31fc1ec248a75a31a9d2b1183cf7a1336454f7fd9f6c09956b2d. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FRX872426258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12875f873cb7e79788d285bea8cf9928ca51779e22dad201718f27741dd1ffaf. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX872426259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98246693bb94608163591cbfb729f315d1f8517de73f12bd32c15adcaa9f3fbe. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FRX872426260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98161f5313e947daf61f502b126e875d57120b37537a480c78bda181634c3cd7. 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/FRX872426261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa225fc52c7f904f51391e1366d9feab84b187ab34204b8d6482ab6e408a287cd. 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/FRX872426262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2cd31b7ae9cfe74e11e899dd265cda97989829c7800bcdbaa03e80128bded4. 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/FRX872426263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9291103cf250d211d1da3ff12dc0236bb7f62a71215061f786e1a95bdde68a8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX872426264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75037241572cdcb32f814089f06af8caf6362570f73e169a9d360b086abf7c27. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FRX872426265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774fd5abd53c02e606d03b078bdb7a4381f1e26aae0f9adc6b6a59149b6dc3b7. 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/FRX872426267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe45e4cfd83a33a0fec3bfc251959eb995182ff48a99e11482e66643285670b. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FRX872426268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9161732d4f4e0b9a1c059b3b43af4aa56ee02fce291ee97b8c2bb7f397ac7e9b. 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/FRX872426269.