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 0x3bacbe9dab5a33fa96399ec70a2016e1e3d5c617854b456ac6fd8e1289550e83. 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/bcff3855-4725-4195-8bfc-9c39c5a28e5d.json and https://artists.proofprofile.net/proofs/artist/bcff3855-4725-4195-8bfc-9c39c5a28e5d.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 0xb6553f914c47dce8c2eb77e127b61704d23950cb752d09923ef96bdc60279138. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX4R52325315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d026828f538937064af9447c82ad45f9d3406850b1db23aa4b8bb3e2142b98. 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/GX4R52392083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6860900b215ed3e8020274808600aeda1750393798e5ad440d939c5b93597756. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GX89G2408654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099cb3262ebd11311c03571db3d44435b45f850c3bd975fa852bf5298aed3375. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GX4R52365479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a10f41a7eabbacd0c2762c6c256bdc8f73ca5a557b56042f12ec75509bf25e. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/GX4R52382482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5b8f8398f2e68003a0fa43776f0b12278f4b7dceb8941daf152da772fa57f9. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/GX4R52307027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878715bde5108579047dbd44bdfeb41c4d6a3e3c73fc3d39f14fe9ad43272fba. 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/GX4R52343898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b090674b8b66d4fa7c46c6be2eb931b3583d80d0bf61665ac543e47683c69d1. 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/GX4R52310864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18139637786f1bcbb6c693f68ef33e5d746cb1207202c8863e8f2b74fc2e9a6f. 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/GX4R52337880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867026bfaca685da7b9df9e11b32724d71b95b1cdffe2c6db3cae7d7c9084929. 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/GX89G2314929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434694f9b408f260be6216b682b0cdf12be01ae185433f73ee1a7c92b952b8f1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/GX89G2354761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbf72635977b2e7cd3879062c72bad54f63bac2fa6be26438948a9fb1355fc0. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/GX89G2394138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbc5808dc5d82bc9e5cf6ef76f0bfb21d13f7af69d408a2e30d4e5f3246132a. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:37:28Z), 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/FRX281926714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfc02c2c96f02c9b38d578844c880d49593da8891beb2cdb429dfc65c49affe. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX281926716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ddbee482fdad37daa12934aefb3b1fef9088f3b5ca404aa598a1b2bd8d0ec1. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:11:01Z), 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/FRX281926718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0524ca60d3cad98ea177aee5a2397afa6a0fe9a2b22e573fc11b0bd0f90803d6. 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/GX89G2348378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9bf1494a2a5ebd5ba56d32ee9cc976d9c1d6e060792e9ce81e43ba31983f9d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:13:45Z), 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/GX89G2302805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4408c8cd80172f943f5c37c9e669b2e7ed2f5cde2c1f6c8993a9a2dc1f72b03. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GX89G2325192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855afad2f0032bd9e5c38dd1a9e4351d74114af6438a33441cd238485f8a19c9. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GX89G2357455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2872793ab723032bc3187e246aab4f7aaab94a43bd582d19536bae9062fa5fcc. 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/GX89G2319583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd48179bd1fec89922401725331d51fac24d500103b47948c1775439b3d052e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX8LD2375711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe49d2e494eff9d3faf8db1855d24aac6d4051c5750a64b57b3040d37d384441. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GX8LD2306471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b748eb772347e9ec1dfb9afda26c1d07bf0777ea81e0833ab52c38dc503b47b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:49:10Z), 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/GX8LD2309894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7c525c773f9b9ccac8e01ccab2a85d5425a1feddf80c70b6aa99769c4168a9. 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/GX8LD2329870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfd17fb1fa33661b09ac4c35943cec1e3457e04e32378dd2508055f4e511865. 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/GX8LD2382626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709e4f3aa64fb1fb2c59aaf7de8016bbc2403c2aca3fb96b841b483dcefcbafb. 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/GX8LD2357473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2093a41573d60af2a7f5b8ddd158886c498d5d45ad437b52a71d6d8be30a59b4. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GX4R52360082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009fd62fbb7c172b18b2034821f3ca92665a21d3907ccac1d32a2f25800442e9. 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/GX4R52392731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a25ae8116f127aecf1e1a78220ab430f70fb56ac4058a0f03b17427aaa9d5f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:34:47Z), 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/GX4R52303609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26f1ae65dea5d280921829cd0f10ab29f0770bc6485b628a2124cdf00d00825. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:23:16Z), 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/GX4R52350742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2858c5e3665dbcdf3405d3d54c652964879757c57d9d5d899981edb98d9817. 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/GX5MY2304948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0520d2e770d95f1e9227ecb94d22a6240a0a35a3dc3382abf3234704615093fc. 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/GXFHP2527218.