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 0xa78180103e01b6906bb00082c2e4af9563e2f841ed13c553a142019745286dfa. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91a56747-0928-4c07-ae9c-1c33f1f055d6.json and https://artists.proofprofile.net/proofs/artist/91a56747-0928-4c07-ae9c-1c33f1f055d6.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 0xa717e34eb6f6aed7c3e3193aba749a03bbc060bbd10780a15b1da0fa226ca5c6. 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/QZNWS2345825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd820cda5f296ab5da7a2843a4da72b46069eeba1b1f568728c730f1a79c6843. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZDA82266140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacacc6cc133d69c6671e51d5fb10c29c5c9de4d4d3f085302e0995854f4da90a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:00:06Z), 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/UKXN22519113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb2eb926963cf34a2646b5eeaa8448a5a5189acd055e4277ade34d5591314ab. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:39:55Z), 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/UKXN22539524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8144ad59b832648e1ddeb1f37a1c559816b74b7185b9d37f1784656f1105fd0f. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/UKXN22539525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e09a2dd2bd9c2d23c1a617d9fe13d03fea27e1b7c696b672e54ba238bc3d2f1. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/UKXN22547273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ead61fef61e00493c4f4f70385433961eecd3338337fc4deb9726003b8b569c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UKXN22547274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4291b1cfff6ca6d3bbed8c4656dbdef8981f2e5be9e399e1474bcdfcc9baf59a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/UKXN22547276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b63f3d98c51b13fbbc22f72667e5bbb254bcee1cc701c2d7884bbd3d78aca4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:02:13Z), 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/UKXN22547277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe725f59bbcc5bb9db5223a539c99c8965687f9aaf7c346fae55687ecba9f1097. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:39:42Z), 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/UKXN22562411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf60231e0fb0a967c62277a18141c1c7515fd9b634f0b60712888c9e154bc0ed. 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/UKXN22562412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e989eed08f87658a075d003723a30b5eba76507495e3f2540a9a5e9a5c242ae. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:29:58Z), 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/UKXN22570205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa44da42b1f30f7fa40e0a38f455d42a8ad982bb06a92f0510752fdc9353be1e. 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/UKXN22552796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403bb609058ff5290a429d85ddac9e0c352dc5382ad5fd808c9642ff5d264ff3. 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/GX3Q92591958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183f0e45df08b711e82fd36c134afb0a1e4945f2d6ec0951f9afdc4fe3c9904e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:33Z), 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/GX3Q92591962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1f06c166374cba2669002dfb536a7ffa43ffc28c7d12f49028a5286ec608f8. 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/UKXN22577568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9e9f82b30d9173cb86b7e9bf6c72ff676ff0164d46055ec7edc46a78956a6d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:53:39Z), 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/UKXN22577569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7c224f5378200a568b5662aec2e0ad67b7a0d01fe5f39dd946c26c56c507e6. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:39:40Z), 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/UKXN22577570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbca50631b8f0281e91b2fb8b06542957009b7dbec8240ce91c4573851134a27. 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/GX3Q92526608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcce3daf4b5c2769ce85198c68f1f9acfe2d5c644c235f9495622c7e99c8158. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GX3Q92526611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8467cc67e18418c3b8c6ebc01e1c13f1d5363ad35f89c13cac70ed4c1561c559. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GX3Q92526612.