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 0x319addb710ac94015eed8c028fb415d521d291316242381f9aa9aabcc5fd197c. 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/d5797c26-4457-486d-b0de-e27d9e5b1e77.json and https://artists.proofprofile.net/proofs/artist/d5797c26-4457-486d-b0de-e27d9e5b1e77.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 0x334631240c4969a7d4a410ea60b2f5f541dbc941b2f5fde6f0eb32dfd58beec6. 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/ROGRS2400325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe327859b5b12e88e297a152936e1a7764a1e80f1b38ce4806151d859b66a7402. 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/QZNWS2273623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c49b5623faf7923bb712b685ae035901689c39badc3f08869d198be16a1baa4. 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/QZNWS2273632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32c6f02673606da960641b809c291feb249574c734fafcd34f0d096ed2138ac. 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/TCAIP2454293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464d5d2359498d4f68fb0566f78f0d48d9facf5a900da99217859ecc8a60d2a8. 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/TCAHI2340847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b821484662d1a7a987784ef46f7ac7bb1516cf70ddc46358ba76bf2bee2a161. 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/TCAFY2192437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565d2ff3a3e6bffdd29ec35ccc6e6863eb7906b73dd54b226ed8f11eb2874591. 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/QZMEM2194939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4286ddeb509e5bdaab02013c1cd9caee0abe5bffea26217a97a3c7ee176b419e. 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/TCAEN1901175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b20ed5f88b854107ce53ebd84451bfd5d8b60e42bd8f30e4b28fd7a50aaa53a. 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/ROGRS2300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5691561196512646ebca6f2b5d97a5c6b83f68ee24b5110e24a538bc0f2b1f. 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/ROGRS2400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50279fe6ad9af2b90462420f96ca2725e476a2a9383a963ff6c44617c095b348. 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/TCAFM2178162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b821484662d1a7a987784ef46f7ac7bb1516cf70ddc46358ba76bf2bee2a161. 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/TCAFY2192437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c0cbf053bd1e25bbc0592d0439d19b682a535af32036e696b18630592c8aa9. 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/ROGRS2400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35a9650efa67b1d6b4044a916a1fa4117fd6f6d20c2b9edcbd60217af881504. 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/TCAFR2194161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803a4dc0e01f9b0d49c1c45cec7d20326169e642fa35479a398054c53a2b06fc. 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/ROGRS2400165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e139fdb27a206d5f6009bf4a6e666faa4690a9950bc9b5850e170c1e28e528d. 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/ROGRS2400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cdf6101d5b08ab51ecadc55c00bd0266fe621c742d3ae4393aea0c75e30097. 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/TCAFQ2143071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dfaa5676239d1b54033ae1352ff332df7d476ad4b538f615b0411aaaa2c558. 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/ROGRS2400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd38422fefd3316227d185f6d4124b72b4cbef61d5a85ad04bece087b125a50a. 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/TCAFU2110549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdce86e6ae7ce12f39aae30b8b7038f138fa68fb5cf89f058cc3e9e93d00d6e. 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/ROGRS2400168.