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 0xa40cd656563631e0f0c2b9bb20835ff33e0bcffba343fc85dbf4bec46f92d83c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10d74596-8e44-4d19-ad7a-c8c991df46fb.json and https://artists.proofprofile.net/proofs/artist/10d74596-8e44-4d19-ad7a-c8c991df46fb.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 0x9b4b31a2e834bcab18384f40b4f9ef44fe0763b08ec57607f94b2e1f33493b7e. 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/QZMEN2446165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0f4e389ad0a897c0c24c973324418005bc612264463dfabfcb8241ff6efa02. 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/QZDA62465242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85d838c506a341ef22a33453cf3a7d8d5793a726d49e63cc50c73469d838acd. 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/QZWFK2375292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e95693d89901840d86bb3474b9f48e946ceddafb59f923f8c74c5357a038c1. 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/QZNWY2354209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49cf8621a71e53e581948a6e1e8c352050aa0eea67dcc301856249ad61d2679. 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/QZHNC2362931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b4566f7c2323e7d24bd55f770ece7168b99e543c0bdf11b47c382ed7ec35e6. 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/QZDA72365369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd424c5aed7e3b8570cca30399649db985e2bec1dad47bc49ad6001aaab6e3453. 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/QZFYY2317373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674453ad62c35c0e1715c2915b9ade6f45e01d4994db74c57046ea5e4fa3144c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTAW2203324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ca8b602c24fc8047d16fdc545d94fa89d27c8695b8cb6f3799d8c56171dfd9. 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/QZMEP2212155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40ac47b388da8ec17fbebc32d55c7d16d733aee0a687fbf678081d97e1135c9. 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/QZK6G2228791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0028626c972d5f7015b511b83e7a7484d0a4bae74b5dafa3cf69abf28cd7e83. 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/QZK6G2228792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d204af3577195ae35f2d86fde5af807621aa5bb28be6154bd5f7db4d80271b. 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/QZK6G2228793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189cb382157ae9568622a917e3daea14ca83a267ffd33e599ce77a2b2ab27c9f. 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/AEUM72100184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cdcaa409674558711e36fff8e54022dfab9f43b85ecf2fd9ba8453b511a23b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/LBA0H2001909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5000a6aa91c8cb988a07de3a41dbacb87618e66657f9c9fca0fee3dbad1db56d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/AEUM72200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d52e1902bf4082700e6e8df682ce887d77218c4f179229b7ccdd1b634bd3ee. 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/USL4Q2071965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aadc81670b3d9614e11a47c9bfd0dc90878171b978f8984b1e38dd60fa93ca9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AEAB20400162.