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 0x039a41000776dd060ad922468d4dca21d573a17d1ea8cba9b0f808f94f0f6dfc. 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/8c1a8971-c9c9-4bdb-9dcf-19cf6eea21d0.json and https://artists.proofprofile.net/proofs/artist/8c1a8971-c9c9-4bdb-9dcf-19cf6eea21d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Samuel Adler: A Celebration of Sam @ 95: Piano Music and Songs
Paulus (St. Paul), Op. 36, MWV A14: Herr! Der du bist der Gott (Chorus)
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 0x06c228807d264edbe4caf9208119377caa69b57e0cd29ba0573a9c0ad5f9569e. 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/DEAD60900802.
Paulus (St. Paul), Op. 36, MWV A14: Chorale: Allein Gott in der Hoh' sei Ehr'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51669ad03ce111a37e0c8d7afe4a43a6b88366a24d76c1db044fa12a93161223. 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/DEAD60900803.
Paulus (St. Paul), Op. 36, MWV A14: Dieser Mensch hort nicht auf (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d64289266d50914882650d5253b4c5dbea48ca4e595c5ca526f60b83e557785. 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/DEAD60900805.
Paulus (St. Paul), Op. 36, MWV A14: Recitative: Sie aber sturmten auf ihn ein (Tenor, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e5f0ece822ad2aa4845fbe0b270825f41c10e2a13abed20a6b3005aad9f351. 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/DEAD60900808.
Paulus (St. Paul), Op. 36, MWV A14: Recitative: Und die Zeugen legten ab ihre Kleider (Soprano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570dc5693f93f42d87e01938295e669799eef1c8a413c201abb698a600890a3b. 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/DEAD60900810.
Paulus (St. Paul), Op. 36, MWV A14: Recitative: Und zog mit einer Schar (Alto) - Arioso: Doch der Herr vergisst der Seinen nicht (Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811203184b26705ca5e12d8966e49cf125424090020bfe1734ed3a69bc0f27c9. 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/DEAD60900813.
Paulus (St. Paul), Op. 36, MWV A14: Overture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8157d633ad1178cc1198d1e7fe69cd0550dac27c1bb68ec12f5f45a484a418d8. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEAD60900801.
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
Paulus (St. Paul), Op. 36, MWV A14: Recitative and Duet: Die Menge der Glaubigen (Soprano, Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1fb8d6469fb8690c12018fc0348a744cf326ddfad07c2645eb3eb2cc065f11. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEAD60900804.
Paulus (St. Paul), Op. 36, MWV A14: Recitative: Und sie sahen auf ihn (Soprano, Tenor, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732a95b357e17b5e6153c37b90b9c9fb78bacaedddb3f8f681f68f41e623f42a. 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/DEAD60900806.
Paulus (St. Paul), Op. 36, MWV A14: Aria: Jerusalem! Die du totest die Propheten (Soprano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968c61f256062c5a0346fd0b4ac523d69e54dae0150f0a99f4647ab1d5388577. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEAD60900807.
Paulus (St. Paul), Op. 36, MWV A14: Recitative: Und sie steinigten ihn (Tenor) - Chorale: Dir, Herr, dir will ich mich ergeben (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920314ba77d0e05d657d8aef37b3d0e8877012ef964b15b6b8aa7d46c069d556. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DEAD60900809.
Paulus (St. Paul), Op. 36, MWV A14: Siehe! Wir preisen selig (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f77b4ed174c098a5b9b19d12be00d191225a5da4bdc263c562db1b6f414b556. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEAD60900811.
Paulus (St. Paul), Op. 36, MWV A14: Recitative: Saulus aber zerstorte die Gemeinde (Tenor) - Aria: Vertilge sie, Herr Zebaoth (Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f538a509be5820e9f6a53575bd7b18a7770f4d74c68e245e994b64a630363bf. 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/DEAD60900812.