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 0xf566aa998acb1c9f06a932741eccd3dff888b2954ed70681a34d0c14195152bd. 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/5d237d95-d17a-404a-a4f0-ba2b39f6f37b.json and https://artists.proofprofile.net/proofs/artist/5d237d95-d17a-404a-a4f0-ba2b39f6f37b.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 0xa4ced7356db0c7af111177ec46869ce37cf8067aa0f88600f059ff6baf99d8d0. 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/QZDA81911961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51be43b9aad63385c55063d7d37424f96d51da20e5b7fc48b834cd9d8ca2f25. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZES71825183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf4e9650d2fac427d99213368dae294e95475c0535526f662f01d2a2f11a8a7. 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/QZES71827954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415d78ef009032f35067c938a4f6c058b71d636405cd47e056c7a4a73089c053. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZDA81900992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac4cc0c2f1b7aa9cea18744f720f68103dcdccb15c96dafb90197f3cd6d1113. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZES61891365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb224466dfabe72cb93afab8628d02a9f5f7c01b001fe09f8e141c23f2aecb6. 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/QZDA61958823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9643e386c5fda06ed1fe27535c6ccb3423149927657ed8812a18f1392de7d2. 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/QZFZ52134982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dbb835e1e21f3140883dcf98bcf3fc5229e08b6f808ac1d9d59bd1076402ae. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZFZ62185709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c4e90bf8dda6c7fdc2c88b71fa73b245f0d3a37c6f3b47f85d660c03092f56. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZES72118008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f81d383db7f062789e37ce8751c1291f921164b1f83e6e8e315334acae9f6d. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/QZES82149332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a87b5b4558c164a065bf9033071ac5eb993381551a7b3db539fb76f8fc9256a. 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/QZHN62136743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7829be4d7f0a7d71e5c5982625d8e62faab97d3f7944f6d1a00304f57a4d4c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHNC2150493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c40893cec4fc1fc0d68d56d45d03419fb7881c7babe76ff50a92909b9852e09. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZNWZ2179665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404339f6f827c79263efd85312a2e064ffcfcc1d1ce459469df4c44eaa65325e. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZFZ22225991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c0fb256237cbeb181d76a291876c2b9a809ba2a81e844156f6927de9da3ee0. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZDA52272802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78855910cce40e6027610577cb40591a0cf510be09406e964290bf2cd735fd75. 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/QZHN72226458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962c5be3f0350e08a896c8e53999ccd48890241a84da1e76ef439817e6db7721. 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/QZK6L2232935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1feb4ce52cc097839fc46d7245550c9094ad8f28023fbaf462a1a4db03db452. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZNWX2296048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb946d2c28b59695aaa406a69c9314b76f6dd816fe93689dca704813d1ad78d. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZPLR2278189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f6af0c75732ed326faaae575fb840002876d11fedbac18fe3fa5eb8baadef6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZDA42312579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7eeadd9818ed40b9ee878b6a6f68c5641c953ae29bfbfd4de7d70d97cfcdf4. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:55:01Z), 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/QZDA62305062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08357cb5eaa52fa072c4adf1d033b2a713c5ef648705568b38da5aea81c0368b. 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/QZES52337257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e1bd2a15966c36a643a60014f98a1e7d637fbb871481992be8b241763c62e2. 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/QZHNC2369619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc433aa897042ecfd20bf2458e52584064553570592b3f7eef40527ce5034e35b. 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/QZNWR2301743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f89fa5956399c4f73e0b66a103f41c97f7f9ac47105bd51cc9b18fd722909bc. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTBE2331662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c0a3da2a0ba83479f1b482bd9c751f93ea2337dfae4ef51a3fd3518bc39f0f. 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/QZWFR2303342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7465a200e9de3e9eceec5b5aaf5efb62a85adb477a3f2c2935f4175a8c822a90. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES82484032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7a0eba84eca488b20a41c5a755aa063a232d142b2aa6c11e22920e7835aba2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHN82472502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfd4bc51ddc0a310784bc54edd1fa739873067e02d0e94e6111d544e3e7d90b. 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/QZK6F2490365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ef3f2111a954164bf90b6ed595bd80c87e59dc46be7da5ac4fa0552363adfa. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFH2418549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736d2889421206c5b3570dc28fa717605d23b3f08d5d55f52afcf9c337b93257. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZZ762427788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10f073c52e87e8285b5146f3efff15eea31f45aed6ed9a9026c046e52accc56. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:22:57Z), 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/QZZ7Q2482154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bc3e49e7206d2ec1aa670bb99d064e43282b4c2887d80b269a65052dab73e5. 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/QZZ762517980.