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 0x16cb07122d900bdde4b5062c99c8260a3e06e52bd690978e09aeedc0d76a444b. 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/6fee4601-da6d-4e12-b50a-67c9be63781a.json and https://artists.proofprofile.net/proofs/artist/6fee4601-da6d-4e12-b50a-67c9be63781a.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 0x096af08f08e93838128e040a577e52cbd871b91d8c0134c79d008c8e3fa99e6b. 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/QZXLZ2309617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c10ba28b5e8fdaf89e23f074215d75e34c838437c16e911f8f392e404b54aff. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZXLZ2304448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2a0a1baf52c0be57c8f420a14124acb00800c75cb35bda4dee0240d0e26dd4. 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/SGB502255632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbacab744710ca2329fa80a25c95fe7d5faacbcaed9230daff156d30ebbbbc9. 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/SGB502255933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdb6788144b1a0285ee08405138c98ccc63f9d8df6afd2bb8e866cd88a70202. 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/SGW502314048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe930c80af50369eafe97a2aa667d36fc0b6222a807b29d4e936809ff710a7508. 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/UKXN22387728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189003e81fe28a06fd7af49eda82ea67285336bea43241cb85bde8f1f285e473. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:11:11Z), 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/GXBAV2427121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099bda3e9c8789d5fd3caa5730943ad914871e225f2318c49690c3b95e814836. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/GXBAV2432974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5437c6f837d680534df749a3e5a8a0835eb07fec12a875fbd9dbc140a86750b3. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:14:05Z), 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/SGB502416885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf464fe255173aa130bd085eeeffe7ca3a110405dda865fcf58fce7014b98f8b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:31:13Z), 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/SGB502436079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896ddcd63d27e7a392f5d84dc12fae8ba2f8782cb758b3f0833792ff218ff864. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:05:38Z), 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/GXD7V2257631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbab476dbb2689ae23e080d868de7a002690c449d6ed08dd9bbb8ea8c744a877. 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/GXD7V2205945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29709b3995664ea2efd6bb06298ed8b2495474c7944986d69b9d417605410a63. 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/AEA3A2234956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44ec9a56a67e1f0adce4760a700dbb2d919ffcad9cc0cbb1f895ac8a27a344b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZW9L2463328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f8859f771082ea2c69ff0e1fa554497905595a9d066718e4b79af4dc8d591d. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GXBAV2552042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c0db44bb0e07dc97f1823fdf46cee61ccbd08848a2c918ef8020e15c0a06c0. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZGLM2517763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1834e0836bb0f752241cb169e0a33b02b7d55821b55afd3f4fd3e09f851177e2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZGLM2530346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf18fd4e3e139c12a256acf24a42709e0d89d4efb8b77fd5c40eb8c3ef164544. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:52:32Z), 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/GXD7V2574853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26d56956fad271dd997a3bdd74c95642c92eb74938f1d16c8d21e42112c507f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:15:25Z), 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/SGW502515376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adf650dfd0bf0ef4c20b40c09f483ac0d50f22dafc0998f7b96776becc27915. 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/SGW502527424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b28678d410f72314e4a90f314f40b9ee3180ec232e56d3d890e627376ebcace. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:24:50Z), 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/SGW502538758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6f6385d22e4ee872f09e13d3523111065600d0e808f7da7f0e1d9683d91938. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SGW502513358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa70fcdd72362cb2208f62362c5a5bd09af7fbc10c543b0e9504753f1b3b73b. 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/SGW502538594.