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 0x8597e52b008dc2db501cb9746a985fd56c6582995f5a9ee0c4b1e4d37774c905. 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/e27c0171-655c-4347-a257-1f93db189360.json and https://artists.proofprofile.net/proofs/artist/e27c0171-655c-4347-a257-1f93db189360.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 0x7753f98b74d61f564a3f879b4b333c1db9a701fc16bb19debf91cbd8646dfc5f. 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/AUGBT2212382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfef7c6ff540e2059c8acb03d00c055a4db402f01a6f5b87c1adf53261bc1954. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/AUMEV2307856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca2f1577a4c1d6163671442bff0e5711d11f716dd700aed3aae20c5c1d8f4a0. 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/CA5KR2331895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdea2818877413fe26ebd47b6b47f6bd47a362797d794a135ce8f83c2fa420a2. 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/ITZN91200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d7cd3624e589ae3a3221c6633ad3c04a8e53f24157906321b877501caa2780. 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/ITZN91200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af0d183c7b617e3544eff00a6d69ab66cdca2219b54228f25f8673e26d7947b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:58:43Z), 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/ITZN91200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf367bc7123221480e821fb6255434f6f7b99b52f4ccd93da499e3a23e4fabb. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:09:56Z), 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/ITZN91200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b157b8a4eb1ed8a1ec02e30c0cd203bec68845cd76b46fcae973bde698540d7. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ITZN91200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593ca7ce0615e5893b6b79fe08adbb01e4a935e412a98033c56b0f987adc63fd. 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/AUMEV2427396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca2f1577a4c1d6163671442bff0e5711d11f716dd700aed3aae20c5c1d8f4a0. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CA5KR2331895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8915bd2ef1c0a1610714c4f8e85b8d7644a2ece50b474ea4f5ef8968a767ec0d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:29:46Z), 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/CA5KR2331615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdea2818877413fe26ebd47b6b47f6bd47a362797d794a135ce8f83c2fa420a2. 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/ITZN91200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d7cd3624e589ae3a3221c6633ad3c04a8e53f24157906321b877501caa2780. 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/ITZN91200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af0d183c7b617e3544eff00a6d69ab66cdca2219b54228f25f8673e26d7947b. 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/ITZN91200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf367bc7123221480e821fb6255434f6f7b99b52f4ccd93da499e3a23e4fabb. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:03:37Z), 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/ITZN91200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b157b8a4eb1ed8a1ec02e30c0cd203bec68845cd76b46fcae973bde698540d7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:15:18Z), 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/ITZN91200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a26d554086ad76148ef61dbbfdd2a664dfdadc3b186290dd3a2ca201a3d0a57. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:31:45Z), 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/ITZN91200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5a2962cdaba25238fd999e0bdba6fec0144d75889375338d45be08244afe88. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CA5KR2492600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c965b413bd30ea4b244af94365b74dd89f21f64cf3f62cc66fd965fa3f0240e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CA5KR2496742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba758081f405219cdb5c019c1f32a25b6bc53d524064476202995df1c580f9d4. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:01Z), 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/CA5KR2500649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedee2914e404404c73c78c0bb730b79c8d9d6211249185c7134743af35615015. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CA5KR2500856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0713e2b450ab780c7e313a6ab86be603f6621f23d606af4b8cd04c4279e2b587. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/AUGBT2528864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593ca7ce0615e5893b6b79fe08adbb01e4a935e412a98033c56b0f987adc63fd. 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/AUMEV2427396.