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 0x6695b881e7b9032fed2be8715fc6b7af90cceb697594712cefbfc99b863aeed6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7efb490f-8a6b-49cd-9a82-48a053c1be96.json and https://artists.proofprofile.net/proofs/artist/7efb490f-8a6b-49cd-9a82-48a053c1be96.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 0x644241f473909a1449ef8f5dafed818f7e08e33cb49b2ad096312d94253d6ca1. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GBLFP1790012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f6b8583501c3bf56ae200e2079dbc6f62a07df782f4d708adca59a65c70465. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:05:49Z), 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/GBLFP1790018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875c1df0c87d684231aa83bd4fa44d59cf8ce6c3fe355560db612efd2709a1e0. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:00:12Z), 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/GBLFP1790019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485c7d68d26d50343607d762e0cdba60c2dd4c9d1a0ced575d95d68867f0769a. 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/GBLFP1790023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe553cbe7c87d671d8e27b89682f3c6002cac234b6956916c1c4176d9497c28d3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBLFP1790058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187a1f49023b301e987ba0770064cc9112a9cd5b8a446ce91d4fbbfb9ca297ab. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T11:19:52Z), 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/GBLFP1790059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f62dd5441edad67a205d509136a437abf02728fc9098ad3493bca12fa95eab. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:51:32Z), 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/GBLFP1790149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6839fb361075809ff5a5be96c0927f692babdfcd5acb7e57f13bf0bd29315e0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBLFP1790041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22767bb702f210adc855ecc9d01ad413c49220ff4dd01273356cd0d3651a929e. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBLFP1790044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fa19231343f135658a7e31cd0958d4fc0e5db37a27fad2b45e025a7a960274. 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/GBLFP1790045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe449f45f8f3473fa0a91fbd45cea6a2d979548ce21f0ddaa2f51b3b65c9332f8. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/GBLFP1790046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc938fb07a3e40dbf6d514edc7d451ae21c0e2abb1dff434d928662a3705b279b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLFP1790145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21658a83e0b79aff34af63705ab31c6853c3cdd7bd87fbde92e667e12721c201. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:55:25Z), 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/GBLFP1790078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87d8f75bfc8bcb91ee058c531d62f11f0a0ec9b5a58c29ab427dc5ccb07f9f2. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GBLFP1790079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5334a8829b1282ac25ec6adec97b6920385154e125652c27a80e4f0fffbd5a94. 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/GBLFP1794423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e9e5543e1576f83fb886c99f958e24c157dfb82e7b696aa7cb18e004129a9c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBLFP1794429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b22a1f613f13b3fe320486ce6d4d39f51cf29e66b77d9479ee2e8cd1261085. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:32:37Z), 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/GBLFP1794431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8376ae031c4de2012e7138f9696338b1636e73c7e2af6fde76e85c9af027349. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBLFP1794432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263707d2138cbf943678e6eadf35ec180724f8def16099e80ee7d53601d1eb1f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T11:20:39Z), 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/GBLFP1790152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694229555187e692ba3d71e76fdcc7eef523c9cc6829241e171f491478b17e25. 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/GBLFP1794474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630ebad95b5a236e366855b0c1b581081b863eca3a987b7f05bb169d20720c75. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBLFP1794477.