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 0x449663b984647f4d6cb088b6329eb3ac8bb103f3d0d020e2338a2488747e305a. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23d51258-f95c-4302-8377-d0353108f2c6.json and https://artists.proofprofile.net/proofs/artist/23d51258-f95c-4302-8377-d0353108f2c6.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 0xb3ce485597b83bf8494f358ba1939f452420ef98610a59d633e77eeea70678e9. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/QZMZ92505973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffa31ef2a6ff046d802d5240d45550765822cf39dd3ab06c2c95aba889dd6d1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZGLS2596133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7449e6a94c5bacef6e28921a0df6f16b41d56e8dc887e2b5304dcfeddbe9eae9. 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/QZMZ92505963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ff9115082932ebef41de65fa3153cbea3fd347488cb0eb51142d82da0dbb5c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMZ92537408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76c4514b749743fcfcc839154d09ccc07edcb0bc62bf826835fb8cd9583c0ba. 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/QZMZ92537409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96c5b353c67fa8467e713cd7c377f3ceb09e17acc22115eccf3f050dc8b9426. 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/QZMZ92537410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5534d3e7f1a4d106337ae4294f3ace863f25fd8b0b7b2bbbb6358838c385f55. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZMZ92537411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9cbe32869342759f4c290d7126b00165995869ffb440b84e4b18281152e67c. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZMZ92537412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccc1efe6f7598a5aecdd0355909d3f37726b579f4784c83d4eb3b5589a7f3de. 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/QZMZ92537413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fd9d0ca2930e052180da11c199b83e94e8d4cc2971972465aedb1e3bb548df. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZMZ92537414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1982f0e80ade5e415d60700c5c370554d92c6e92e821ebe90f213d141729d9f8. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZMZ92537415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc619ea558de7ebf5cd4725760ae20d54e9febb501d8450c1fe7afecf1ddd3e65. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZMZ92537417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36df231e952129fabb78047ecada8ac538ef7e8022d3185070dd06ea8f48e2b4. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZMZ92537418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b2880edaf7853e8085c66ee308266d78a93bda1bdaa969fc209717b5f47959. 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/QZMZ92537419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b5c44be4960067ae68159bd91d9cec390d762f3a68a4c0458116fef7b96976. 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/QZMZ92537420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe825e64687aaec9ad3e721e2003b99f28b0fc3a9110919668424d0f591a132bc. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZMZ92537421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6592d7c327fa94de402af838948501dacb935df6824afd4e84ba5f9c9901cd87. 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/QZMZ92537423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583bbb4af3bd5974c08087ad319b04395c1b2010f81096ad3262eb7f0142613e. 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/QZMZ92562728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff1f2da7d2bed178f73aa84bd4bf8bbe8b332047e4d92d5a8e68532798180ce. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZMZ92562737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b40a2304efda1fccca84896931f24dc1c988ebf06e9b05479406236616523e4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZMZ92562739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaec755b18cb92e9d3710d8351919a1ed6df5d44a21f25fa5275f65eb5ada0e0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZMZ92562745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e837d789fad718d528dd57cf4ba33836dba96f9d72b10e9ab90638949f4144. 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/QZMZ92562746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a51ef29f8e5f6dc41b24201e3e1c9adbe3b9ac688bc2393d5d558fa4a651647. 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/QZNJV2574755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda2796eab9a92b0af622d5c35222cf7f844781b98c500851c3fa7749486d3f9. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNJV2587053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2966c824928ba3c845007fb8a1b7af8a5493ce03199506469d120eab1f679b. 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/QZNJZ2583680.