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 0x6a9c1a028b8c0e123cbe4c368d430bb56854a53aea3e577728ccb86677a4631d. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e1594c3-045f-42cd-b7f6-41cebe081dfe.json and https://artists.proofprofile.net/proofs/artist/2e1594c3-045f-42cd-b7f6-41cebe081dfe.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 0x3c560103aa5fa01284656c30e1e79a235e5b93d572bab1bb358dba2d9ce30755. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBKQU2443248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7e969344bf12829b48aed44d70e84e3b1511a1799a95677952c04d02f77460. 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/SE6TI2168240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454b21566272659dd0ffd913052c45e6c1a29ec82dcbc433c9eaffef860f2b20. 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/GX8LD2265134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1f819ea77ccaa1116c0068920e7cdeeac898692920e13d5eb86cb4b9a970f2. 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/GX8LD2203687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0a1674dd63d78ad8ae4dd39348fe3364b83aee9d36e8607e9c8fac4142f314. 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/GX8LD2298811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fab22b7fd114e4a45c718d0cae8e94e93b31615b6acc8f72f6bafae83cba804. 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/GX3HH2144200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24fcc3fe825af76c8b4470e95473518271d7873e838123addb9a0d4c5919935. 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/QMFME2497207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838e80fd67638954ee7adb41f0d6efe4dcf444f1928c4d617f4f51efb1ec2c7b. 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/QMDA62438405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ceb34f3d5a7589597d0363eb841bfc38f6ae7da648f1de97abad9d5ff0bd715. 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/NL8RL2430553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c14177c77f502e67ab63331c91760543ef7ce5e8af1eb7a1838f073b72fdf7. 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/QZWDD2499821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faf84373c6c996955a1e33b9e910ac194322bc0a3c013cb03606458ab1f906f. 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/USA2P2410165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f66135802f839672bb1025080a8e54ff136b9729a59be36d05bcfe544725304. 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/GX38U2382103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e05baabe56319a30fe36e98dd82e2ea3bdc7e8588990b825fa502209a066fd. 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/GX38U2332095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550fe5a3c5e1af0ab18d2cbf4cb66513d8a64a53a67eba77ff83b4cd5a05d4a6. 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/QZMHK2048505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdebaab786edc007339faa87e52fe0cd27e588d28e95c444594a9d727285090. 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/GBKQU2411767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b38c848c5cf3df1af2d7cca849ffb346d3b1329eb9330ec837f2ca72bd556f2. 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/GBLV62323055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6acfef3170064ef667c9cd08522655576f259c5eeafeeb98e587d85b8a278b. 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/GBKQU2461002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8096286c72b9c89ebe6f4589b8730f42759470688c3d016350b6d3cb5516b762. 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/GBKQU2421383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd357ee3d6ad92a268d728f4a27a333285c59fef97c2a8149c3d9893a5c58897d. 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/GBKQU2484779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8748949949bb1aa815a83d09b8355edade04aed9a02f2b0357bcde3fdbcf68a. 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/GBKQU2428056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08e0e28b7c44870192c8499f666216703f8987d6a6760b3d676b8054951f624. 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/GBLV62401414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566db340691a372f13435f53bd9871825758141d1834ba3f1087709d7b6ce76c. 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/GBKQU2435670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827a059c88b7a6a3605b31d47beb9a7abbf925ea907f31d36a226e2c42628b9b. 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/GBKQU2472924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e89b8ca5b0999e62d17356cfdeee10d9e73a7a68cf7d12f36a74261001b581. 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/GBKQU2455755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcba8f70ef3439a9f16bccbd87d712fa8b002c0b526342eb7cfdb90526ed1a3a. 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/GBLV62407996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0824ecf78e39427fb7df8095251aa293eec711830cb7ccaee033c4475d0795b6. 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/GBKQU2402024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595a6cdd679ffad9f585c5706c9401c2571f568e2f4047c33c3709eca86f61e6. 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/GBKQU2497446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f1d39fc443a75cb4aa6eb0308994f3fe4d589c612ad3880ba373d837f832b1. 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/GBKQU2402034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54c2ce06683e05679d61f0d0a689a05cb11f319ef7b2bece4384e50a168607c. 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/GBKQU2487307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b957b56c2fa4e2756374085d1c1c853b220ccb5b4186cc844d15740007c2ed7. 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/GBKQU2480091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb435898f0c8fc6f7f503891e700fa6f68ae2e02ca26e13a899d416a08aa5fa5b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBKQU2493493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296cdc71dcf59258a44982ea57c4cc6f7f58ca4fff6f38258a40a88a94559102. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBKQU2443843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2624cbceacc2bf9f12dd0e46dd41df1aecba6e5d557a2960c7d7874331be8886. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBKQU2403345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5180b198eada28041cf366fa46a1a2bbeed5948b2b54c66dc665694a9899157. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBKQU2447117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c560103aa5fa01284656c30e1e79a235e5b93d572bab1bb358dba2d9ce30755. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBKQU2443248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2b620dd74c5cb83164dd6b4f9aa5907e7f1f12363b7f8f03f0cd8c09699f74. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/GBKQU2455757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad44e577b9662a658635be913b45c3f1a4ea2a9fca143ecf624df949b7be9ac. 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/GBKQU2460937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdad2821c0e73485e1fe86e96df8286771372a457f82883c05494dc9b209ef55. 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/GBKQU2402027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1221d0edc6f1026222f60ebe3200e397fd73083b98a6533aec03ca3cee8d0af. 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/GBLV62411306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62a9673acba2c27399d886634d58c5d09ee70ba8100534779c6dbfd77491392. 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/QZFZ72056727.