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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148d5ef983a3e6034439f2f2a3b975a90efff1709367ba5c3df655197297ea8a. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7c29890-13f1-49a1-af01-6e4d53fc9f96.json and https://artists.proofprofile.net/proofs/artist/d7c29890-13f1-49a1-af01-6e4d53fc9f96.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Neuromancer : Voice of V from Cyberpunk 2077
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bce8185ab34a91fba8a8b4bd29a327763808384f121a63976d1175231dfa76. 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/US7VG2570776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291cba7c4d085bc6dfd883b6b507609b475d4bc4257325d11e929ee165c5f7b0. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/US7VG2570777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7178580c1a1a9336c9503b258982540d4ef0317b22b56e2e84502bb9c846ce06. 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/US7VG2570778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfec4e635bd8950cfd7ca583bf100e75aa2a13c265a6e4e9ff91bf204e69547. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/US7VG2570779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8661cd4d83bb497beb52f8ede9238cba3985233f44755747d64a8ca5611e2804. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/US7VG2570780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a0ccef6babe6aef044401efe067894235aa90e214f9ae6fdbc4a84176ee8bd. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/US7VG2570781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe077eebf7ac59de07d1fa607a25e69d7efcdac48fc482d64cb9fbcc0344611fb. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/US7VG2570782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2213c329e40ca0b43928794171a5ef78333b3d0e22b24d9e6666d107231a1a19. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/US7VG2570783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12285c7967f3921665e93f00628bf06b8e40bb809b8bf9d2876185ca8f280474. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/US7VG2570784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f0fec71b7b40e60c808fb83ddfff47d9ba6056be49f5b6e42e794434c54293. 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/US7VG2570785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2738418ab1babfa668bec382b2d0a7ed631e151435ab467c1351c70b3a5e69e. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/US7VG2570786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a591218aacd2dce64dc5ead0a386887b9dff4165404bbcdc1245d5fe3aefe0. 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/US7VG2570787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2c4285be990d59e7fd465559facd3aeba5f06c1e5a5af4328b947c49935ed7. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/US7VG2570788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6704037f1f49cbca76dfb52be7d925c0609153db916170226c721f7f51e18230. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US7VG2570789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561d4e875982bae8501d750358c1f34ba1eddbf94dc1b9add10fa66410ab69b1. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZGLS2568304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd827da51f2951f1bc4e0006702043f7298d8c35d14b647d6c5b0f67f2a0bf8e3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZGLS2568306.