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 0xe345a6c59a4fddb7027b5d289017ecb054fa92bda35f3b040f2a7fd77c065d07. 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/e35f8eb6-110f-4c54-ba9d-813ab478177f.json and https://artists.proofprofile.net/proofs/artist/e35f8eb6-110f-4c54-ba9d-813ab478177f.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 0x0de29349198e03fd96b2f9feae120055fe64df7b01eddff4798de77182f30391. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCADX1806229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fae7340b511fb8c8016913fa3e8352c7493e438e305180c011c16951d91efdc. 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/TCADX1806484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898ea92e67c496dab6b72e758881be5d23eeb45e2fe406f01e16fff2d96408bd. 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/TCAEC1957979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269ea310ed4b8346fb3ffa66a4c1f9cd9d156036c8b8d97de7448211c531a812. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:48:52Z), 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/QZHNB1989885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ada461d558a7f85a48479b30211f2f43340689c8f12ba901365d05f2175b290. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZDA82084100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116f6f4c83405ca56b6db883439e096c8c4a4f1948e3b4421f6212c79c10fc81. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:35:04Z), 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/QZDA82084101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fe9ed91e04235f8790f59ce4e7d565d4973316b809378378d023d9fab85c44. 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/QZDA82084105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059ee007d0eb888494a23d511aec1b49f0193550f27679b62131f9d824fa1286. 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/QZK6K2038421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e26f67611fb89d37ff233cb8ed062c41b653e3012b5ad80d1037fd685682f26. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:26:49Z), 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/QZDA62111791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc813bbcf49b49af8ec4be611e82909f9d12a18c80ffa7b34d280a385243ed3d7. 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/QZNWW2156094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276595afbfa0abfb88cb78aaa06d78cda1ad02aa9eeb4c2435195a4a3b72108e. 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/QZNWW2156095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26265033ceefcbab891774ff581cb70fa7231f9d0ce21e324db3cc52fc87857e. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:51:32Z), 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/QZNWW2156105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedc85039136b027c18cb07fe7c434d64f8f5d978ac5149e6957f211320ddac6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:03:48Z), 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/QZES62245379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f47966bc3f017b5fd6cd15b5ec381c7f79b386c15fee30b00b8e0a54336d448. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZES52297181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7f95e0eb4b642b199cff118b67320b5d576ca525865f5b7d1c6180d5dcc3eb. 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/QZES52296812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9c2abff07e1e5f0ec66bd703f7a27276b3837d505379ae7edbc168018589cd. 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/QZHN32220833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703625f177945e7c43497926864ce2a45f7d0e9a7f93c7d6916533ff9922afa7. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:24:07Z), 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/QZK6H2253087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf741dd265a26ed385bd4ebdc61d2e55f60ddb6a78d2601f49aaf4c7b07a86179. 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/QZK6H2253090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77270dc7ba004786643ba57e349852f54e13e7664d94aae89497298027e4055f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:15:25Z), 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/QZRP42204397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e49ba7002468e491476e7c335181e2b9c443a1a4410ff38b975e1ad20727a2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZRP42254816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3701dd28010e2e1a4bf0900f5bd0890f171290d93089d549e5e3e49d2574bd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:48Z), 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/QZES62335026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5574b299c94013cb17faad973ab17c36a950db7abf4886a5e8228eef34843933. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:03:45Z), 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/QZK6G2375293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68c6a1d6f1c0b2f496e2f08439c1e458c5ec615d2eb9b0c8f082e53b9f345dc. 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/QZK6G2375294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793c0f4f949dd61a180e4a709a6455942de7e021abfab14d0cb63d9185f75733. 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/QZWFL2385661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733c8f64d69b1a8f63d742a823ac6101e3d39a93d95f3377bab76acf373d6ac9. 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/QZK6M2478564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce61846f10d02212d0e25171ac0219aafa185f2c86950dc590689a48f5139f08. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZTBF2426428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013102b08d8261b66f8ba8c92e4fb54de193255b196727a018e038eb22d7970d. 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/QT3EZ2486357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec1f584e0a73add474797f8f4ec830f96428e2ec006e49243f2cb29c3abcec4. 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/QZTB92590930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc9228b1a4850fc7b9f99e5629eeae27852fd7d8863a06e4b63d387816790b0. 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/QZWFL2532768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8255347576318a364d70358fadef5bba01a5d4508788b99b8c5d058d810288aa. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:38:17Z), 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/QZWFL2532769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114017bca1e3f25f8d353a89d3727dd8b05be0661d1e1101d134a713e189e066. 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/QZWFL2532770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60e199cba625d039931857d431b1788ba83832d71956d0844a09d787b990389. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZWFL2532771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4bd3b60bc362c3b6bb927574bba87e8865ac964ba745ee194dbd6cf075c26a. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-21T16:25:09Z), 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/QZWFL2532772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b7b2de60beb53b04b26d7bdcc22f3fbf7376c1417efc843a4d8591fecf04e6. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZWFL2532773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53037160c9d4115739c2d3656ac382202138f406e6a1ad0d4a24b78073dad1cc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZWFL2532774.