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 0xcadd8c87672ec8afd41cb0e0004607d1f7775156de21eb7774a4c2a488a762e4. 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/3c277ac6-b402-4341-adb7-0952437c07d6.json and https://artists.proofprofile.net/proofs/artist/3c277ac6-b402-4341-adb7-0952437c07d6.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 0xe9ca6e3d891c613df7b69211258c24e3f090e1e7df6e2b2be4d7196a3e2bbd55. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZWFL2361283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9b6cb1eb363a36e4693d97669e88813221d38768b067f765823995727db7b1. 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/QZWFM2391730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd915cc6becb851572d41b88f0c8ff284017961a5650a154e9f06265ce061142. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:32:02Z), 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/QZWFN2387112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758b0b9f27bed03e00016a48dcc9850c6a8a9a4bcdae0e770401de292cb7c858. 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/QZWFN2387785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063ced4115461ede174a25b838e7855b6821c78555c847d7825d9ff8545d4684. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZHN42470492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef03905c8776236f734f5399449d0dc1ed76512d1ac2741ee1201251260e522f. 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/QZMEQ2484256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799f31ea006d0f0812da7da055216b95549e844370baefdea7f85ac39554b489. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZMEQ2485686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce0c04256467f04f6efd3920c66dcc4112674711d0bf8dbd5bdd5425ee8f35e. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZTAX2426379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf8a97dc804a67be023f98412cfd29376d6e9457c4ec42286c0a80e701b284e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWW2530679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e242ee2b4225a4391ad7d5c2f8be97cff4821a07e39dd0c40503466c2edd54. 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/QZNWR2574217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872a98552372fc0dd2d891db75121b685a61703b6c8d6761e197daca52d9e508. 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/QZWFH2416209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b68bd470b9c7975701ec9df061fbc068749fbe4b65191c91f420563fe79b51f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZNWS2561780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da85287a5d7ae3b97671001cadb9d323f8f1577c7d573414ab1acac31ef1402. 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/QZNWS2559813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e78bb1a190b5ac4afcef753a335a8b6debe42d77e128f81080c84a1606144f5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:38Z), 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/QZTAT2587586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41a5a0299d7afd9a08605a67271a448f737d2b1c93cc95940c02117e0b85e65. 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/QZTAZ2557897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efdd4694b145593a063c27991475f9cf1ce1158fd1fcc2117587185d51369af. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWFH2533388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e9fbb38a9bfa07f977a4987859b9fdf34bb21961cbdb84a514e99330a5cd94. 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/QZWFH2574304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e714dc91f324105d7c9cb2f38d1cd6bcd30b2c6ba1f0d60a144129c09bfb4aa. 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/QZWFJ2519058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff3957135bd81bdd8c8fb5ea790321a426541e813268eae66424867f916365c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZWFJ2519095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056058d9bf371fe7332f7e6a55e135f32d2d1ed5831570773fef78e4af734815. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:17Z), 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/QZWFR2503987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d069de9946a9306b6b255e46aa7691289abed9c84765f1c359fb588b31d3f4e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:29:00Z), 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/QZZ792550857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdc17fb036becb6dffb91e117c82288dc54e35bd61f65cef3573dff89d90e9c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3F82538688.