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 0xf47e1ef8fdd6c67731142361e110724f29f51bf4c0151b60182cea09b850d7d4. 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/ef100020-d62f-432e-a554-06936bb7fe85.json and https://artists.proofprofile.net/proofs/artist/ef100020-d62f-432e-a554-06936bb7fe85.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 0xaaf7c6056f80fc1546e5067a1e8b05712ec27e113ed77243b6cb48a5b1822b69. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFK2487998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d13f0b1c7fb8687ef56fab5434139dae2fc246ad5ec38bcab0b83c07986f435. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZWFK2488001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46374e932871d2df9bc7a32b704e055e1874508cf551791f0e9b80a45687a4db. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:17:42Z), 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/QZWFK2488002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d72227f988d44e405c0b7ad94438c0c9163e0d511f8b73de3f3b2c22710ad3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZWFL2464353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae81893939cef1251839421794ad9f5d2f80a2867af5c5df620b6970298ad02b. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZWFL2464354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97c9f2c21c116a9d9051feb3e9f2ad71f21f112f978b638ac8fa1b2946a8aef. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZWFL2467385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4135e7402f247ee69510aa1c41e139be5ed162c21d845c018c04c5f6398e0f2. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZWFL2467386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770c195bd18e437da5a68527080d3f092e01ac5a05df01712a050f40934e871e. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZWFN2414332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3722fe08570eefd44b643683b8882167442eaf2bb0e8365448407972da9a3dfe. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZWFN2416862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56aaa98cd82367299816bbe0495a5e18f59e7406fd0f2f2c0acefd627991dba1. 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/QZWFQ2462443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8b92fbf4c31e4fdb6eec10e13554b560f16364f083ee6332327af5abaab42e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZWFQ2462444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148a26c8b1b84220c6de38a158718ac7c37de204092ac9ab06ccec9e9f9e1de2. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZTAT2553556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27303e70007ed02d0a6214c8bcfa441711103bc117908abe61e9f558cb362e84. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:17:13Z), 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/QZTAT2553557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e5c8f59f77bb6bff46ae3b4e4cc7ad96395811267ac82eb85096368b37ceb8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:20:34Z), 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/QZTAT2553558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f81c8f3f3250f23674a03012db329905720738763b0312559951f6138cf1c4. 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/QZTAT2553559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81617e3d20c5338a580d5946f5a9ccd1578311e70e9daa12cff35ff21207bf6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAZ2513702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792467df986ad7e8b512c2bfa7f6f02a8d76f43d950f6fdb255e1f5e341a9e2f. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWFM2520997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419f3b228de5efcc297646b8730f243b5765750df85334700dd1f447a30cf03a. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZZ7M2540913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f772811ac4bf4b0d33aeee066fc3a9ed536db73543afca93ee73001c7287dce. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3EY2562709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc135de83adc9e7d9452f68984131c54c9a2637c0b430dc4fd48c09a08ab46ee9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3EY2559296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986554e43fbf5a1614ded34cfbfa54ddee8486d9edd88b6512a41fe8a9eec1c3. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3EY2559297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143410b18b24ff6ce8932f0c1822b198065cb73473c713e76186fdc695c8f9c1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QT3EY2559298.