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 0xb0ac1706d26a809d9bd694ee86d1d91b0ecd28cd8bb521f7cf7bf23ed2115e83. 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/d4d84d02-a161-4265-882e-6794c899efb3.json and https://artists.proofprofile.net/proofs/artist/d4d84d02-a161-4265-882e-6794c899efb3.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 0x6b207a7748e2585015ffcce2437e21b77ea63b3d9f1fcaadbce04d49bb657df9. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/AUNJ10900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef6cd1c001a8bed4f41492b3afb4ad5790baeadb4d6319a6b14bc716168dcb5. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/AUNJ10900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f51f840b940afd8a0f74ef3e6b22520b4f566904d656eca8525ee14880844f. 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/AUNJ10900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ebef7682ee70b806f1e00dc6a62ff01ce7fa53d38059ced3cbb0b430343541. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:14:10Z), 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/AUNJ10900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf71502b9c83f6da8fd20c065f852810266224a539ec88c85c26f818d8075c89. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:34:55Z), 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/AUNJ10900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5916b2fafb3c0ae21ca5d85638f0ff72e43f6c43e8865b1698238250d7d9f1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:09:01Z), 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/TCAFZ2235984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf103e0cf837852cf15d5348240e48033619ddf9b647bc5c92028277284071ed8. 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/QMUYR1200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92a157cece98a6c8dcedc1fb504d87bb529ce417a190c43240bbc6210f71d0f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QMUYR1400172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb192fc4a3364d27c56d7a6630ea1ad93c5497e9abf42735b7765452dab36b85. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:59Z), 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/QMUYR1400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26731b0f747af6dac96b45aac36b6e4596b1a69b8a1d3e002ddfced56f31802. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMUYR1600385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9c9fcc68433f51710f7d6013b2d4a07835324ffe61f8838f7c0bd944cec315. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QMUYR1600388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69eac72aa789af3d794a9bf096f504c2c90db946f75283d9661e92409ff0856. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QMUYR1600389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a722ed37d3443cefdcbad64d087ad86c1ee920600d55adf5dca9a88e1dfc03. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMUYR1600393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdab4c34b6361a22f9c70496cf616534ff88c6888622a256cb16c47950149d37. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QMBZ92352946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63400602d39555fd55ebfcfe8929ffec30f5d52ad3332ac64b8d2df72c65f54. 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/QMBZ92352943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d23eb292f98b82f68ae643f7a6988b871e5a2635e4939551e97d3dcbf6fa212. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QMBZ92352947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4f8fc051fb51d5b52e0a87460ad597b6aea1954ddcc6c48780250a75645df7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:47:56Z), 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/QMBZ92352941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63400602d39555fd55ebfcfe8929ffec30f5d52ad3332ac64b8d2df72c65f54. 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/QMBZ92352943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d23eb292f98b82f68ae643f7a6988b871e5a2635e4939551e97d3dcbf6fa212. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:52:49Z), 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/QMBZ92352947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79b476244ec6c6202212a2897bec009714ba0679e3eaf480e4ab255e6896537. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QMBZ92352949.