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 0xec342a1b0eeeb02ab26cae937aad4c040a0a67a4499655aa9886cb2236a0588c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e617f4c-0005-40b2-98dc-f62ec4a021f7.json and https://artists.proofprofile.net/proofs/artist/1e617f4c-0005-40b2-98dc-f62ec4a021f7.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 0x18ef96267b8c9b04029a465e371924fbced0f71ecd3f133e31e8a18436645a4d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:08:32Z), 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/USE7D1800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554005473f5f03653eb6ab9d3b38c5f877bdf0ee473f3c5dc19891cca00071dc. 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/USE7D1800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc264c8e40a806dbf99572e4aeee6321b31b0f218a268cea036f0eb8925d7e4c. 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/USE7D1800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae01c9abfba1f4da42dbec1327e64b5acac9f0501ac17ace563325d2218b08d. 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/USE7D1800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf142bf5b075c284a116a9d66fe9e1671d7ccfba602b418b031f7dfbec89b0385. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:40:37Z), 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/USE7D1900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2589ce139783b785b77140f1dda8a1ea9518d291e9efe1728191edec6cadbc68. 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/USE7D1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee47e65075e09c06236c566993def4963353d9f257aa855fe9a81989389fa01. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/USE7D1900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec643f606a8b9f013ae68c88d3f713adb13b62699db78a72f718b3c7424e0327. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USE7D1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fadc0f40764516703eb81ba20b7533d2acae0d7290eb79596bfaece0462367. 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/USE7D1900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b37fe763cb0b332acc81f822e5f50e7234700ec0250841114f61568d5ced69. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:38:50Z), 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/USE7D1900280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9179526b1d51137ccda6fd56d1428139ca67c106d6e47612dbedc20d7dc8eca7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USE7D2000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef226057c9e4ecbc349fcc8dc228864c59d65f3b7b53de1bd026f0f640b87b1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USE7D2000148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda21209a9238ff878bb71085df8c48e1d06f5560316b6f835561eec7a8f4c971. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USE7D2000149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85313adf3b194078263dea453dee5206a5daa4ce98e15fa42dc101cec1fbceed. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USE7D2000150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea998f4a26ea982f8540ddf1f887714c5305488d80c3ca3492c9e3497a141bb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USE7D2000151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc202258328ffab6aaadf8069b8a4e88b96655412b7fb79bb7895cc1f238dd0a9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USE7D2000153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9179526b1d51137ccda6fd56d1428139ca67c106d6e47612dbedc20d7dc8eca7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USE7D2000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59066c2d85c28359a5972841ae78f17e4e10e31d60e774d6109e42e3d4a8a13. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USE7D2100256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f133746148d31af4cc6a458148af05578a977118ea7e2aa2ebc51e9793ca708. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZDQH2104837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86edb8ab088e58ecc4d3fd1488acce710cd6a16f9c2c33165f0a54db541ec05. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZDQH2105761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faf43e7d2a1b54c690b1d05fa7046e4899cd4d886919b9a080155d5c788e26f. 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/QZDQH2413158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdaf05a11a002360623b0c47da4dc483ddf084c35200e446fd1dfc365bff1178. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZDQH2537262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba106bd2a729ba5b70d9e224ef5a5d276906070bc28ef850603635aeb570f5d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USE7D2000220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91452be29a32e9c756da50de4623ade3e2363cbe07056525d2fbbe4a08a8d166. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USE7D1900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93fa38d3d457bf2f9fc05ef1bedcc2067db747474e9c436e633044105af0fba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USE7D1900004.