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 0xb95a56c6ca94f12d5f7fb875f745ebf4c449ca79d29a3ee18200acfa8cd037d0. 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/d3ed19d8-ccf3-49ca-bc9b-3725b65e3f5c.json and https://artists.proofprofile.net/proofs/artist/d3ed19d8-ccf3-49ca-bc9b-3725b65e3f5c.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 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 0xff86c579f426ab6be6809fb4fdeec6fff9ea56eb62da823acb4dc848fd1d804d. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZHZ52293203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7994c7d198a93f18b27559ba547ac55546bfb04793911266fc5bef34ca5727b5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US7VG2470343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646801b998aeb90b2d7e9ccd48c96f5d6220ed0f3427d48f348be510fbacd765. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZMZ92445246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ca231cba94234c51c19e6d737e212b69960e4f737a4cf6b1fbfdd8a468b2bc. 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/QZNJV2443233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71da104e48a7c484ffeef560227c99a178e0d27607d1bc458f13d1e66e675747. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZNJX2475174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec9541a2f900cc610a2426865a323cc9d683e9b509907d5368e7e5c3df285ba. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZNJY2493131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e2af043c1dbb3c0d65dd2006128831a5d469d480e8d214bc92144d78094b1c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USL4R2467078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e8e0482fecc986b397bcde900e61f1f5768e07c30e53dca189ff84a3a606fc. 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/USY242480651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0c9428e66d19bab645890cd3f60b30c3376c1157446df6e10973e5145c9b04. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USHM92505710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa213acad37d320577ae0c5bb209399c94bf2d525510d00acc4cdd0095d127f74. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNJX2590453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460b7c433512eb831724c241214a639a32080265fbcab38c25e543e7ec8c76c7. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZNJZ2530510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a21d3a376dbbf874ee2b67ae0473d6f42f9934dc2a89038448e95d8b306296. 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/QZNJZ2552407.
Teorema - Tematica - Tiempo - Teorema Vs Kaiser - Live
Minutazos Vol 3 Freestyle Master Series (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c611f81ed3d707431848396ca4d53ffe5f48bb9791091c05b8d1adda72de9ce. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES71G2328420.
Lokillo Vs Gaviria - FMS COLOMBIA T1 2022 Jornada 11 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439a880b800aafdcaad873d5f48467494feb45cc53637221654bbf651fb5a69b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES71G2307608.