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 0x428c2b8e53b199f61d0dd8c54c0756789e182f677866ebc1ae05b1ddf66e5232. 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/99ad3f54-05e1-409b-913b-219c014f32c9.json and https://artists.proofprofile.net/proofs/artist/99ad3f54-05e1-409b-913b-219c014f32c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x9dc1139a3ae56dd7af50251e4136968752e7c94906793298f82a285ba978613a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM21951253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602fa4df1026edb9d15e2173a4d1bbf557bb4cab84724bd9f96995128f5e1a8f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:24:48Z), 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/USHM21951255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c166633a42b32b648a46f59874f7b61676b93b4df9fee7b98868a58af522543. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USHM21951256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c2227134f3567baaa866abd16eeda6c23542f6034a3e568d800c4450ef0db2. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USHM21951257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a3f436f88d8e57cb28584a0060de83ab5bc3121c6bc707f273a3cd0ee3f47a. 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/USHM21951260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360672791a0f6b3a116201a395d8657a266ad5dea8f9ae142f6ee688941908df. 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/USHM21951261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5612bdf5c4605982d15a38e403e5e23baa404c93987c68eb9ff928b222225c. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/USHM21951262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeceafae6a8aca69b20c2a44b386c2419b308324e638becf1e705d2a34cee53a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USHM21951263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975777677a5096a020013c7296df3e8d174b0d101b4632369687b8e3173ce2ec. 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/USHM21951264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6368a6910f65ea7dd9ee100434b732150e5e1e03929df1c92eb3325ac01c0658. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USHM21951265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74aabe8da0fc2b5a60b73fef4bab6981892571baeecc4f7fe9e5c8729fa823ab. 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/USHM21951266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5420060b98908a5a4a61ad549c9b751af9fdb7e079d935072153a3f0e92fd626. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USHM21951267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fecab3df2e79a78e9e7a14557c9ce92e3de9e872d1fb464ba748abcc839c5c2. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/USHM21951268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd89fde24acbc2f0766e97bbb36e37f28a8f050a60a2bff9b83078ca73ad499. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USHM21951269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064652ff16be36470b0b1c7d6048b91470666d6292fe4045b96e73732708b8cf. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USHM21951270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4af1f448131bad8458c7907a33ca98356a0dd5a86ee91060782bb37f141f0b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USHM21951271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0675c1d26ded2f8cdd02fda845202a024fa305f7eb139a79b6aa758542d464. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USHM21951272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6bbe0d902d1380fe13d1f261b35103c2781a46d1fea65abc4b2e0889a2d400. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/USHM21951273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139f2d651529420cd6b4ba3d1d41562fde0e0954f4eb508eb96d5c6c0c862c3e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:52:02Z), 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/USHM21951274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f915e874905339f3f902338aa3f9a0af6e171e0d1d556fd7b80a13b13a958f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/USHM21951276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf494da912c1c0cf3cb727f395d8c28d998b629d465e57f5cfdc9697affe240a6. 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/USHM21951277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6b128bf86747c74198e6fab56ba64067a9452cd71fd492e1443921a62bbbb0. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:34:39Z), 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/USHM21951278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f54c5420b2b14d7ca558b0ed840682014371efa7b5795c4094abc56a3fcc19. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:30:15Z), 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/USHM21951279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc4457790a4841d89c6d7a555b5bb48af9fc6b217ac3a588c78db2604fb5830. 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/USHM21951280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c76deeea24704ac2c098a33e54f9df04727c863b8c58677e4cd76b7a450035. 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/USHM21951281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9348a20fddc210ec8d51b9965edce474d768bde28191176659ce5e0e1f87ac. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/USHM21951282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bde8ab65845865b31e30331f57a95cce28c10ab83cc6e3d8ae99bf2fc81e3f. 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/USHM21951283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e584ad8870ee71b533b155fdc81b608feb7c7b1e0cb9014444a2f8ee0d9bfc. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:07:17Z), 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/USHM21951284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45216dde155312971669b8547fc4152b49655facb4c1235bc8fa779a323601e8. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/USHM21951285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905399dabd49baabd72be2d6ab4e6e4d6eb5ce26146546e9e6727d912b57f296. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USHM21951286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d62f449d6a0b3a8af0b32fb2021b3bfdc2c078c374706f8d46e0cb0b4afbc2c. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:06:53Z), 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/USHM21951287.