1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xfbc101cb79bdb4b6da9fccd6119125aa104e122463e66d67028adfae370d0c28. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56a4e06f-b6cb-4ded-a8bd-86181a23ddf3.json and https://artists.proofprofile.net/proofs/artist/56a4e06f-b6cb-4ded-a8bd-86181a23ddf3.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 → block OTSBitcoinBlock must exist at that height 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 0x222bbf866be51793faecea8ccc58782ed9f8dfe31171f006bcc225ebd6e0f916. 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/QZNWX2227477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56502f5b7a1b955e9fa261d60bda10c6eb22ee4b73a6a4d5a0ee372e3d6ce195. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNWX2227481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ef141f9cc69fb962b498037914abfaeb513ec3a410043c73844777c962cf08. 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/QZNWX2227484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a2ca002c903fb9449b3745b1bd454e5a5d7eb6daf6d5cf4c2e7ae2f3d457df. 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/QZNWX2227486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320890e83c31a54c7284fe67a1971e2f8f3008ed058c45b96da419b543b4d411. 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/QZNWX2227488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7a94a68fa03e6e3fe3dde5562ed1c3d9a9a31a4a6745d31e0f8935bee54cc9. 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/QZNWX2227492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02aa9219154ae515f5c2b26649dda564a8267c9a5d05c825b976279a0d447f3c. 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/QZNWX2227494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b90633f9bc035f2dacdb57b4d275eb628a3b08673d975c91a7f45feb5ede8e6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLC062433960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d39112e6d260c995c33d67215ff536e2f0e48f88e52f97f2429ec15f5d1aea0. 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/QZWFP2466039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa223eab7e86c6ddcb85f2636471d527215c4acfe29ba5b2d3900ef5a6ed47b78. 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/QZTBF2415931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa096315240da11076c91b499629cf4a17e06aba16cc24474777a29307df57b. 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/QZTB62467116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6899b2e43ab1bc7f084793765cce8f4c1ef943717d6dab56f0d33a112030f46. 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/QZRP42444182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072d9fb4d0f6edf4261e0ef9b863151da0d8ced40f8b29a577aa53ab7734a229. 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/QZNWW2445442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1adb6a60e960925932a68a35baa3172ce748d5da9fb60365ac267d952cd6e03. 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/QZNWW2442896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1053ed85e37b08bacecfcad29a1d71b2ea10dfdd6bc494f9f243c5614b4fa39. 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/QZK6H2466508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b019c6d8ab82e2ea355eb2167f0dee82741555f73e2bc32c82e9c27ae9a8d9. 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/QZHN52482794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52eca56a541454e959f7a12bd6ab7031eb50341a6ec86e8805a15b3573f7f26. 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/QZES92481819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bf2278501da9c986b6e00bda7622730c5f62122484985880cf3286168dfbf3. 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/QZWFQ2377210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd853ac9646e2b9142e91c72bf1670f9e2b9ab733a333457fa296e0b832cc7aba. 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/QZWFL2358522.