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 0x0f3effc6f317c7f415e73657f9b9abbb0cdcd2553b96faf6a1ff1272da959773. 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/99a0c62d-f769-4062-90fa-5df0a67f1f32.json and https://artists.proofprofile.net/proofs/artist/99a0c62d-f769-4062-90fa-5df0a67f1f32.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 0xb68e284a36fbf96b01a429b24962c1e3bffc178e9104d37045ee212331520edf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCADG1751464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011190dcee33f7e5dc26ba74fb4cab5b8328c0699847644633dceee0521ad489. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/TCADG1754396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cf7c9a9a9d1c6e8e36e79bab3d01d8fd5dafbb3a46a43817b86c9036d69c0c. 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/TCADG1754401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6129b6067a5fe0f5f7e35ed4feffa6e51ae8d578cdf884d38a488f1b1bdefee. 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/TCADG1754406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45eae91d94da540a81f5926d04ac5f27044ea738c3b8f9ab8989edd987768870. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCADJ1779270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81d79988ca9fe49a223b7cf7e43e4ec41de12a4c4d164d71276eb0a6aa5c79f. 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/TCADP1823449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb37c298d7b496bfa362ad980704dd5d37070d7a9ff2cd96df19709b8e2463f. 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/TCAFU2121713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfb1c18ae60fec39afe843fcef675dbd597695181d68007d0456adbb537dabe. 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/TCAGE2231490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574d71cbf5a81ffc661d3c0a576783afb97ba4d80393e6ebee1daf730e63fb69. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAGE2231539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7178681a7aa37b219ff128cf563d2bee2fd134ceff41a2c1f363169a9cb9133f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAGY2352362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808bc06944d9ef04029958d87b97eb93fa7f9d8373c8c4c656c47dae341bb4b6. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/TCAHJ2321924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09375c32c4c74cddc49a0ba8389c8941da71d22c1a940c504c52a19f5e953551. 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/TCAHL2322116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b4a4c34ee644c9c792d778e6548bfec9e21c0e9a5a50e6f95d94183525cbe9. 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/TCAHL2321876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed75284e3068e76a5cb9b2faae1bda33c7641d35b091e82a1798086a79e010e. 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/TCAHR2382854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a89f8a47212a851496b1bd0f1fbe8b42ac92e20a68b187d45b46e899600ce5b. 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/TCAIA2405943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a14f7aeeb4638c9acce911990e928163781b29e299861a11eeaddbb14654d0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAII2424629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8418f8e529d08bfa6813a2cb9068870e6d225483ae10b42d21ee1ba9f01267b4. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TCAJB2497680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f10be7f78c888241ce6e22b29c34c5036455ccb13d5cf8196253e8f3a0fb3c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCAJD2439724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6a83978e97f72231313a499f94404ee12783303e849a2a5f3d55b563b9fccc. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:05:26Z), 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/TCAJP2560049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758d99eaa02e0a7d0557a9ec9eeaaa76672c314362a6e998129753a9b7a55b8d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCAJS2507945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1059f9dfedcf14465b036a451cf358b85beccef843d50415e3f845b3f2c31ed1. 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/TCAJS2568026.