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 0x3e8b55fe67924fa6a9b41224efcf05e4224c67e660164bc2474401c23df889cc. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b990280d-507e-4fee-966f-bf652fb259d8.json and https://artists.proofprofile.net/proofs/artist/b990280d-507e-4fee-966f-bf652fb259d8.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 0xb5bd288ae18c8f7d065646c44c93d3531d3561b0b992cbe6696ac543169ef2a8. 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/QZWV32563467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdad2a6439b5d6b303a3f62f4be55e38c09a73e4e8767b596cbf1eebe458b036. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWV32563497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75587ca6d2c16a8e8d6e50528d4186396fd0cf7cc99a29fee476f1dc7b33cc7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAIO2409804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d7564cdb4555b4768a8da129047176a553dff71130e97ed25147c5dd6e587f. 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/TCAIQ2454888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938dc7dab79e1ccf1524ffed73fc3a6338c533d0838522524b8a6a5794213a2c. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCAIQ2455039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa940d9df8bfc221bb79ee672d4370733faf464f118e9ce84f365d71a300c26c0. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:00:14Z), 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/TCAIR2443749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3fa3dc9a7afcc61789ebb7872664cea67c852e108cfdebda93c6a3bed4941f. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAIQ2457150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f09e615f15f37b211ff932436b58dca68717559d63a685524712899ded9780. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:53:40Z), 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/TCAIR2482259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721082466ccdd015fc65adb0ab1e250af7e3d54b0bf275a8912d528ec592605b. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:04:42Z), 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/TCAIR2495267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11db2cbc24263a07999b090d4686d64d0b9ca7d5daff7fc301e1a3f3715a209. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:41:50Z), 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/QZWV32563303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9789b294b6cabb8304f41d6f8024fc6528cc2edda992608b02595c4e8948c0. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:20:38Z), 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/TCAIT2424350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a967f4eca4c19dd9c2d1dbd6f7c9c15df781c55a53b30aad24cd64ef100252. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/TCAIS2433468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6163035b185f3ed2e09983621b1fab794140c1a2f117267e190e102f8eec644e. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/TCAIT2450821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60cbb712cd41b0a663f09776c4d621d2fb6c5a502036e309f62d069558e38c1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:14Z), 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/TCAIU2401622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1cfe061e80885e005090ac4ac7bef9c08a3030580365959a2308bddad492ca. 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/TCAIU2400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ce21320b077f9dcc2754812c36cbd858d2f90daf4837fb8ed687581c1d6a13. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAIV2455315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bd5ddee4e7ddff63b772ceea77a1221f7486a28c75d6b15f89f27be76c385d. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCAIX2467251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ea7a97553a01f2473de51045ff0d43429ce7b0e39d0437682fe7046a296f29. 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/TCAJA2496497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594c8dbf30d51e0d5162a2712dbc88e553d2039ac5b5d18b2055e61f9c9ce844. 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/QZWV32563291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecaf8aa62f5489f3d816c1e2c69097e5a8183c2c7a2d1c257e8e411e8824dc0. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/TCAJB2428237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71b4ba0feda39090ec8eff2d6f4a8d3e64489d88a61de718e6ffb840f54777b. 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/TCAJE2540722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bff8d9df6f667a5f46d43587ce28df8cff56b95572fcfc0293344ec97adccf. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:30:12Z), 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/TCAJE2552031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289ccb6bd43515cc22e2342adb27744cecf6903ddddb24973b8454dd7e129702. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJG2504832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653f50909eeb6a8913dc374d920daabe1bbf8c0d7ce58ed1ff364259b1281d8d. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:15:44Z), 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/TCAJG2539008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad0edc0bb5744f3eb167562ff6c72a6d417a7566b09894b6cf6d0ef91743c3e. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCAJH2541685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8f5c19cde1c1178340ef59673cb33a5acfe047bf76fb45641a6c3c6fff2829. 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/QZWV32563276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b2f76a4238be973aba49806427dbf8537a8c8bd5f5eadb79ee8a7291d46881. 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/QZWV32563252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47483efa7bb3c453d5353d9ba1fc4b8c12567df0e068c5376a2ab70d590c631. 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/QZWV32563259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf148fe4972f3f07aa45ec9e99b6a6ec0450dfdf0d86441febbb8b7ad3153b490. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CAENV2417866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88b8c07b64bd5d255936499cbe6f53f5dd9a5049bd00c9e3032ff71c4e0524b. 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/CAENV2417868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49bfbf89fbfe0430b682393229ddaa7f2e7bd05a34720ca29a20e4e64744285. 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/QZWV32548918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36b82b21bba49812c3789c733ff831d2aa557a8140971d265944165a2329bdd. 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/QZWV32555223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc6f1fc247630b147c7fcd9258234615a9722702d50cce1c950801370e78016. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWV32555224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e400fd84e7b83653cce21ae1f834c697b0c8a7d5dd958b1139348ff8ad528ac. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZWV32555228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8771b339724994b98d47d36f90271bcb4470342209967d5d3377f1277dbb655. 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/QZWV32561617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9178859aec3e3f0bc6a3d826bb0804a0cf0114644acc79e363c2616be5c624aa. 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/QZWV32561618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8192366f500f5fbad77555d6c8242d81f9ef797c24fe0857bdf1bde9d05ddbbd. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/QZWV32561619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffb14aff418304228009a0644bb2ae21cf142bdb46e767898e03a438460b9b6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:47:55Z), 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/QZWV32561623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf068cec66981b2a2fc31cb21d1f33e73a3b9b74ce3305b438da93ebf255f8157. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNMW2516533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00143d246e42e33a281181df15527894655c50958afaa55fc5748c4a88e9b5a. 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/QZNMW2516534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98801c57b7835f529d1f9e3baf7bc40d50f85df3a3e896691030c44bd9ea0bc. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:22:03Z), 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/CH6542559161.