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 0x9ce095029d3e53e199c10b80f580564258c0de73f832ed28a1c5f24b511914be. 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/385f5428-bd23-45d3-abd7-af6d5f089ac1.json and https://artists.proofprofile.net/proofs/artist/385f5428-bd23-45d3-abd7-af6d5f089ac1.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 0x2ffcfb151519efb8247b85a346496fd8b4d134da234a58d37ed00d4d9a3567c3. 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/QZNMZ2132428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2397e80d3439864f18258b7fc51b10452a665ea1cd45a8440f06c94faee6a9f6. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/AUGBT2354945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1307f09f5189591652c0e7224d95b9aabbe26d1bbfbc99c717481d2939d04e. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/AUMEV2412401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b090b784d14f0bf354e84fcd1a419990b8da2e6a4893dea5c0aa78b2022883. 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/AUMEV2420944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f41e17a10c07cc34225fdec088ba2036e2c90d586ed36043b78f3892c28d95b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AUMEV2420943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcecc603c2cf77e2a5d30300ad6bd6533ca1554a79cd5ea686d75a98f8b27bb8. 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/AUMEV2421047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce8e3842f8e7e7e825d47c4d79e4346b329cf344c1b0314da42862b3e7868f8. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/AUMEV2420947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84662a67c6766db4e45881127d76356b1b859813a4a192d2e3e6b5b50f188871. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/AUMEV2420955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78171c81056c2bebbfdc275f54307657c44a28d33f6d5e954530110472c98a8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:42:10Z), 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/AUMEV2421033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b624d1412081b294da28ed54be2528284f68285cceaab04f7e244cf2f3d776c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:05:33Z), 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/AUMEV2421057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a53d1db46faaf6c97a69bbf9e69999fa723791ee49e7140852574f1c03dfb6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:08:50Z), 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/AUMEV2421053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6def377a86e7ea31d5894d2d070c80ee390aff015715f5a3ddfaa51d37f7694c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUMEV2421049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c62df8ada197e35d88b3015f09b58b3be2dc387a09aed6d76c02de99d473cdd. 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/AUMEV2421050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecf01f6f3a6731600782ef531a17540e550713fc269b60e50ae21b70e49500b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/AUGBT2309748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4201bdd619d4229c03e065508640e62b06b699e19bfcd20f273bb7b1e7964d. 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/AUMEV2347786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d80dcef9a041ebdb7dcb2029e0d8fddb266918be6b97fde332d1c1e63751d5e. 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/QM24S2403187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4f301acb56016cdb031a02ee9b9780b06408f4f5cf9522a6d9ebb26fcd2dbf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUMEV2430746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34916b4c3d3c32d21946624da8ccd57316532000cabc11e5e56cd6cf0a3dbac2. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QM24S2403186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3b21e9aaa4207cbf2b4909b2d333ace70b40b2f1a374573f4026d071b89eac. 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/QM24S2403185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342997db8091d6d97c4136799b76ef1e645dec37cf898b48daaae34b3dd1df1e. 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/QM24S2403184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bac725d74c4cdac00cb9ceed7a7630f7b7008d54a8f88c9fe22ce8b2188090d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:20:45Z), 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/QM24S2403183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0161e9f8a1a277402158a6e80fde29d7fc2e946b0c52f37a98a90c28bc5d4ee. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QM24S2403182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1307f09f5189591652c0e7224d95b9aabbe26d1bbfbc99c717481d2939d04e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/AUMEV2412401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a370e16c7f42ad656192cd5217fe9604b74f8bac0546febff1539f87ce4266. 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/QM24S2403181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a571e77a6e0bb97f26e6318d6194e0addb0a3a4267fa0626484c04833fbde70. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUGBT2220677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fd23997727923822437606a353ab0a43d02d506b4a603322d27a2479cce58f. 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/AUGBT2472788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d162017bf32fdda14c15b30c83685317232e72bba69ee776486ae9ca683ad3. 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/AUMEV2506588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aca081791cbd52a723f845a4e9dba5ae4f8c29424737a1f41cb4aa3044a4ad. 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/AUMEV2559307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42337eae3fb379285fcca3eb28db6727cf452432cb10ccc7a4cfc42e988c0a7. 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/AUGBT2455672.