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 0x1d37cf7f0449e0d52cfde327c9e9639936d77e3d321a30d3301452a39368d6f0. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8607a5c2-70a5-4818-894a-d31b9127e68b.json and https://artists.proofprofile.net/proofs/artist/8607a5c2-70a5-4818-894a-d31b9127e68b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pieces for Theorbo (Saizenay Manuscript): Prelude in D Minor
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 0x9e0fb41464f8fa06edf90391f1b26f49228295dc36e7b001ba8546da43d66c60. 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/DEQG42092112.
Pieces for Theorbo (Saizenay Manuscript): La logistille in C-Sharp Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd0336abcfe21e50880f3709cb3b69fc16d41813da7996ed5ab9638eb97acee. Chain 2 (Bitcoin): anchored in block 957212 (2026-07-08T18:33:44Z), 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/DEQG42092115.
Pieces for Theorbo (Saizenay Manuscript): Prelude in G Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d490d55023192019d062d150400cf0a31f5b8daaaad97812a532f2679a469f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEQG42092116.
Pieces for Theorbo (Saizenay Manuscript): Chaconne in D Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434598b659db42eefd4384cd0222c2b9514e2629fd1f68fd37b6058749bf1d7d. 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/DEQG42092121.
Pieces for Theorbo (Saizenay Manuscript): Chaconne in G Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c708274572a1577a93c4d0ebfd019db58a269293552fc4b98d4be6fd156d4d. 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/DEQG42092125.
Pieces for Theorbo (Saizenay Manuscript): Allemande in D Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688d316a7b68792b8b3393b330159d9df23d56b467b293d1ceeb35e6acb29fff. 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/DEQG42092113.
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
Pieces for Theorbo (Saizenay Manuscript): Passacaille in C-Sharp Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d3a283ff8b85e32f5a9aa08f3872b2c099fded7416ec208f714508178effd8. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEQG42092114.
Pieces for Theorbo (Saizenay Manuscript): Allemande in G Minor "Conversation"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafd9dcade34dd2b0bb3867f532e9c812fdc34f4d2c00c648f168f595fdf3404. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEQG42092117.
Pieces for Theorbo (Saizenay Manuscript): Courante in F-Sharp Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a90c58a3aab0d7056e0fd4d3a2d49f8301b8429123eedef475b97d9cfd6f387. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEQG42092118.
Pieces for Theorbo (Saizenay Manuscript): La muzette in F-Sharp Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a8f52be603b690ba16bfad4ad3d65bc5934de0aea7a8d0e6e4f51cd7f8bf43. 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/DEQG42092119.
Pieces for Theorbo (Saizenay Manuscript): Sarabande in E Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f671b17113cd97bb8f0ddd752cd55c02cf79dc39a5da514828b9588bcfadefb. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/DEQG42092126.