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 0xc23fd397eec0c8cc8747107f98a17845db99b749c133aa389bad34b0fd4e468f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb22f2c8-eb11-4a7f-8673-11ea4096fd41.json and https://artists.proofprofile.net/proofs/artist/fb22f2c8-eb11-4a7f-8673-11ea4096fd41.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 0x9088ca050ace03c77448393f3ab62314488ab9eefc733e1206c29a3c279d9e8d. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/USDHM1303080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473e03a7326c1a20ea442fc2d1db173d8d1dc0313408c92957af5a9163c4c9c0. 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/USDHM1303081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd6f287e00310fb41c8e1c981fa7fdab90ca063e32f972c657fc8b72b215a59. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USDHM1303082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e87f937b495f583f664b86aa81cfe9f3f72a47c464d9592c5303aa4060490e. 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/USDHM1303083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951633eb3d41547516ab0a70a0b0a6595e2b8a7950f3332845ca6005d004a9a8. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/USDHM1303084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966a76f91ebe3307cda6d9a6ea2362533280d9e367a1897d062ab3f860452bef. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USDHM1303085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6760eb8ebf0a0731e6eadc4fc2f24f50c258a67e933e7b97b28ec88afb7c3fa. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USDHM1303086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8ba1e1e6c8091535065a0bdc173b76b98a6cedb48e3fdb426ab86a60a78655. 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/USDHM1303087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b78eecdf25ead297c2d33222e13d9a176b1478571f6b4720b380ee2ccdb702. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USDHM1303089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fe620d939dfee8dc4183c230a70058e56f6655ab4705b0a38765d21988ad34. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/USDHM1303090.
Walking with Jesus (The Rosary Prayers in Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8120022505b1df405f7888d999936d54f10689bf88943a0f5ee0e097078646cc. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/USDHM1303094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbcf360704217b60629e98282f408343a9f22f842813c6680bb2915782252d8e. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/USDHM1303095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25010376e518afe23bf2d21e8569bd7341cda9f531136fae8317e64f4883832. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USDHM1303097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ea9b51de67d3894b42fd83880f3c641469ed44d3dda0c4d6d7b2acb19ef8c4. 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/USDHM1303098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab864a79a9e8e7e4bd21d9d664faeffc028ba9daa9ee78b9955d714bfb83290. 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/USDHM1303099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060f175d94fd29b3baa83012f3c1a3f4ef2848711bb5944be416606bfd0af879. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USDHM1303101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605916431117cfbb1cd07fef25222604756be3036d91b48bf048242f846676e1. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USDHM1303104.