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 0x62ee3fa6143fcdb5eda1053cee0cab862dbd09718f54528fcbb0c24239ed27a9. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3e77f0c-adf2-4e7e-85a7-f919ffc5e04b.json and https://artists.proofprofile.net/proofs/artist/d3e77f0c-adf2-4e7e-85a7-f919ffc5e04b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Membra Jesu nostri, BuxWV 75, Ad genua "Ad uber portabimini": V. Ut te quaeram
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 0xad8bb608ad363b991b15cbf0e2aa7a55d799b4f2d921ce0760776b3900e9e13c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES59G2230212.
Membra Jesu nostri, BuxWV 75, Ad cor "Vulnerasti cor meum": V. Viva cordis clamo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4115b7d380d75851e998523a212afa3fc294180c187d172d8c15bfccb2facd58. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES59G2230236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f0bc65d12c45e660ea76606a938bd78ffb4a2f51d0ffcf80fbc7700cbee6ed. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TW1575775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e92086d3cd43b40985582b021ed7df31ba992395ca04bc047589f33cc323fa9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TW1575787.
Membra Jesu nostri, BuxWV 75, Ad pedes "Ecce super montes": V. Dulcis Jesu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e6c451a5f3ae1900705de4864a6f9baf02f91da4ced8178df1ba6d07f1762a. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ES59G2230205.
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
Membra Jesu nostri, BuxWV 75, Ad manus "Quid sunt plagae istae": V. In cruore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b70e1d6ed145003c1dd56ecef9ee52d5166c89114e8eed5ce1fa719c653ae9d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ES59G2230218.
Membra Jesu nostri, BuxWV 75, Ad latus "Surge amica mea": IV. Ecce tibi aproponquo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5a8bd943db9825545433be5c00184c5a429d5c1e66a91eae67a21e2255ac04. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES59G2230223.
Membra Jesu nostri, BuxWV 75, Ad pectus "Sicut modo geniti infantes": II. Sicut modo geniti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cc0db145f2ef62536ed6a937a3194c35be6fd2d532b8201b17de3bc1ff9c05. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES59G2230227.
Membra Jesu nostri, BuxWV 75, Ad pectus "Sicut modo geniti infantes": V. Ave, verum templum Dei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4e7ba1494efd928001b5f7c90705c49013a48ccd0ad6e749832d75bc3a0f74. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/ES59G2230230.
Membra Jesu nostri, BuxWV 75, Ad cor "Vulnerasti cor meum": II. Vulnerasti cor meum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716b4050d450d8bf6024794ce58b83df3607db4fac19e57c12e4798dc055ad28. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/ES59G2230233.
Membra Jesu nostri, BuxWV 75, Ad cor "Vulnerasti cor meum": VI. Vulnerasti cor meum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00954df62bcca2210baf902e195221852f8543dbc3543c9864c6b3a1112340b4. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES59G2230237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2cb3c1ada6e37c9a012eb6189e275688782de868b33b739725817a331fb062. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QM4TW1575781.