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 0x3bc4b17ef232f39d68eb14f8d68a27520b5a33d23fee8c993e8436cb452b03f1. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1bd5c9e-0a60-4987-bf73-568e4c03af1d.json and https://artists.proofprofile.net/proofs/artist/a1bd5c9e-0a60-4987-bf73-568e4c03af1d.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 0x8a89819ace072d0174fe58299f351c90b4f883c0f0bd94c758b563e011cc372d. 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/USDHM2403835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14acb45454b9aec29f014105816666ad859acfc8214a6e33095e98cdb54d263f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USDHM2403836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254e5ddc77e6a700312b134cf2f2c7a0c0ea0108ec6f76d2f05e9f7af01ffd57. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USDHM2403839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf36f3ede9662b625d3eb38bfc00a0c399d4d19a6ca5ba2b3eb12e720ac54ce3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN92138530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2c32efde85ead9856b37c3ac8657450b96ad7bcd181f158cbe82ba6332d975. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZHN92138531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f1307b575ac6d35224f759bfbe2a947f19a5e49c871c3ff708a0366245d351. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFYY2196867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263eb6dfd815eb50828d0e32cff4da16e77f7995bfb76baac8011ec30ef5c0ad. 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/QZFYY2196868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf076e3c8c997a56290708b0c4c6fec2c78a0e5d292a400bd9c2ece53cdf0afa1. 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/QZFYY2196869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccaa1a84f1be1d47caceb4c9ff172a798a930b235126aaf38aa644f0749adbb. 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/QZFYY2196873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882f290979d20fc77a6d23babb86ab94751ee5eeb926b7f4454f2ee7f1d13893. 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/QZFYX2160674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e6adec4972b327529182e601ef1f2f158b7f6611a1d551d80b4c0c229c7879. 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/QZFYX2160677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc14ed695cbdcf748e7fa8b64bcef1cebad31e616efd24ca3d9ff4310789c74. 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/QZFYX2160678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcaaea6deeef7ddc9267b34e0d58c0e2fae02ae158256158f9cd0caa88b53e98. 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/QZFYX2160680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe084083e2cbfee2aca22bb6cca1591277b5c3473e3412bb1225150bf7aef9f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA52131704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c8738675c04e2f3948eaf4d6becc639195630f6356db85cf80b180dc82f4ca. 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/QZDA52131705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa644d7fe2ea2dac1983411ad279f1b3b3c0ec724c30b23acd1a6c63c174749fb. 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/QZDA52131706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e492f2e741efcf0374a2fb7438b07d1e3d2e179e087c3a79304cf1328cd6b32. 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/QZDA52131707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0b901ba2d2dd1bdb031a4dfaf50e06f9bd2320f71517248d83158041c8f14a. 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/QZDA52131709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceae19e19057f84465039cf65e4bcaa817d9630e8f10bd934d1d05ff8e37a43. 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/QZDA52131712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492c5908ffa8e789151b4be2bb0ce091f56f7462f8676a42611205965c12e70a. 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/QZFYX2261193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94535482f75e5f7db942b90bb0f87f24108beccf90d2ab189a82d31df7dc3210. 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/QZFYX2261194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba8553e3800b8136f3fdb22c01e55b9c49400f3476923e05ee5de7a7f919780. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFYX2261195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4159daf4e195925c475a66265fc7e368248922f5ee137738bf4c8808af096822. 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/QZFYX2261196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b87690a6c579093cc45fb785cea210118a627d241d25b6fbb41129dd261eb7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFYX2261197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46dfd1dd055e0681348760233827e287e8fdcdf2075c18aa43b23a0b90a90ad. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFYX2261198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e86f009d2d6d21c325f33adaa81973ecdb97cb72bb1259298b3b9c3c0b2a1f0. 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/QZFYX2261199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c60397138850197fa0de09bdfb9c52a4ee632fd56f026f47d0e74e9630a1a04. 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/QZFYX2261201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7922394166cb037191a01be63c8c9450fd94ce9a72460c236b5999b2792144da. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFYX2261202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da3e5153bed4c2dc64a2596c4651724e81fce90fb0dab0eaffd940e0b1eb256. 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/QZFZ32126537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4e382dafe9d6abf9f231e04dc173e6c0d856ad05f64717edd4190df9d6a97a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFZ32126541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1dff5352adc9beb35257f3e094bea59510a4959f81ce5e7a96879be10adb31. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZFZ32126545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6e3ae6ec9c2153d158f1d45f0ce25263e50c24ce10dcb63a41cd71e603ce8e. 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/QZFZ32126548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c87e62d41d7b757ddbaa1ddccc56e5dd546ec050f70569be6c882646935ba53. 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/QZFZ32126549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fc3e5e4c467eea4b0c6b376f8046ecb5f7f569f6161cae57e37d40a3dcf684. 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/QZFZ32126550.