Boston Early Music Festival Chamber Ensemble
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 0x9ef3b506135cc741029370b4453b928ed32b066b54fb150235b03cdd2217d38b. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47fb871a-0819-4944-b496-b770fec6f2af.json and https://artists.proofprofile.net/proofs/artist/47fb871a-0819-4944-b496-b770fec6f2af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Charpentier: Les plaisirs de Versailles, H. 480 & Les arts florissants, H. 487
Pergolesi: La serva padrona & Livietta e Tracollo
La serva padrona: Questa è per me disgrazia
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 0x696d0b4669fd6eb8b7980d98f416c7ba13487d5088a09cf581b8c815b57f3bbc. 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/DEB202362205.
La serva padrona: Sempre in contrasti con te si sta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93127a6492110e55b38eab96e943008ba827031c4711d0d82a02d12913f9b361. 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/DEB202362206.
La serva padrona: Stizzoso, mio stizzoso, voi fate il borioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa417eea04974812dc93fbd83ec550dbac5809b7921ffcca5423c67d0a99080a4. 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/DEB202362208.
La serva padrona: Benissimo, Hai tu inteso?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc246e561c901aeca6f0757628b162e8f9b87adbddbc0035219177fea9aedccbb. 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/DEB202362209.
La serva padrona: Lo conosco a quegli occhietti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918eed3c45a8e7b34d7763687ef9eaf354e584b8dd7233bed2ee70d650ba5a16. 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/DEB202362210.
La serva padrona: Or che fatto tu sei dalla mia parte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804148c7fe85b114daa1da3cafbeaf7e243fb2b140a5a321deb64462c41cc0bc. 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/DEB202362212.
La serva padrona: Son imbrogliato io già
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905487da0164b57f896fddd064c2d84e6250412acb8816bb244e0c464b3bed35. 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/DEB202362215.
Il prigionier superbo, P. 143i: I. Allegro e spirituoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf09189916f155c76a95d7c300de36694bc28c7be928a9cdc98b732f3791d33. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DEB202362201.
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
Il prigionier superbo, P. 143i: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdfc5224966a7b775485ad5c0e3a4afd114e93d391ca2ece6730dfd9e476ad1. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEB202362202.
Il prigionier superbo, P. 143i: III. Allegro spiritoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b80afe64a4b96f93f1777075ef41100fdc564b62eed2ff960ee059ecc4a66e. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEB202362203.
La serva padrona: Aspettare e non venire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e4ee366545e33b9b14c3420c0f696f41aa8a3f963d09c61be9a3e3dc416010. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEB202362204.
La serva padrona: In somma delle somme, per attendere al vostro bene
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1887a13b7d71c497bc89e4100fc2b55b174c47517110c7d826178e8fa80d54eb. 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/DEB202362207.
Lalande: Les fontaines de Versailles, S. 133 & Concert d'Esculape, S. 134
Les fontaines de Versailles, S. 133: Ouverture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49436446122ff6a81cc8c50d28e362ebcd2b7bb3bf19aa6d517aff0a0506663e. 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/DEB201909701.
Les fontaines de Versailles, S. 133, Scene 3: Chaconne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b0889cb0fff2ad41e9520a704f5d46908607844a0cc439a1f6de230320c916. 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/DEB201909708.