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 0x53cd1c09d99dc49b6842656782a69193c55a52ada0acfb1378d947e9a582b04c. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b91f43b0-d5e2-4e87-a436-b2b833bafdfa.json and https://artists.proofprofile.net/proofs/artist/b91f43b0-d5e2-4e87-a436-b2b833bafdfa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
De Visée: La musique de la chambre du Roi, Vol. 3
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 0x2cfbf4247126f2699c2e41aaf4e6a523f11151970608f6ff5a4fe1af022ef46a. 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/NLY331507309.
Corrette: Les délices de la solitude, sonatas, Op. 20
Telemann: Complete Concertos and Trio Sonatas with Viola da Gamba
Cavalli: Missa pro Defunctis, Mottetti e Sonate
De Visée: La musique de la Chambre du Roy
Carissimi : Motets à 1, 2, 3 voix & basse continue
Luzzaschi: Madrigali … per cantare et sonare a uno, e doi, e tre soprani
Oboe Concerto in G Major, TWV 51:2: I. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a35225ca90482f8662083806ae419efaed417ccd5b0cd687158aaec7ce4a2dc. 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/NLY331603485.
O Stella matutina: Laude di Innocentius Dammonis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0493796118aaceec377fa810e51d9479551574ac2c5f85d75d7e52b78a26299b. 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/DEA299908000.
Winter: Der Kastanienball (The Fall of Lucrezia Borgia)
Armida abbandonata, HWV 105: No. 1, Dietro l'orme fugaci
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ef3064feb7b63ce8d5e24e0f36c68dabb3cbdc5648c51f8e4bbd4d59214c23. 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/DEB202361601.
Armida abbandonata, HWV 105: No. 2, Ah', crudele
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cab014ca5f2d41a32dfb8d5320c12a249740b3ae4ddb8af65b72e879afe250. 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/DEB202361602.
Armida abbandonata, HWV 105: No. 6, Ma che parlo, che dico?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a419be88b7b9fac68184968fa64bf6ac496a497580a4aa692f8cd2be3d3678. 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/DEB202361606.
Armida abbandonata, HWV 105: No. 7, In tanti affanni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e968b1a1c4e4438bbfae481a8cc59be44623ac503f11f2ba7f9ca4af8b195c. 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/DEB202361607.
Agrippina condotta a morire, HWV 110: No. 6a, Come, o Dio!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3737601a4ab65ee39e46a1098a80152fddebf245efc3222cbf246a0a01d4b723. 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/DEB202361616.
Agrippina condotta a morire, HWV 110: No. 6b, Forsennata che parli?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c33105bc353b53594d2fa0ae77511a941f1acb7f8bc37f3d34e82132894bee4. 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/DEB202361617.
Agrippina condotta a morire, HWV 110: No. 6c, Come, o Dio!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617b6b698f39265ec919bc26c6a0f2d25cc21bdccda2a6bbaed7de9fb6348f75. 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/DEB202361618.
Agrippina condotta a morire, HWV 110: No. 7, Se infelice al mondo vissi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f831fe80e68831a652a370a4d8869f6d230f221692715edfc948dd9b9a3942c. 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/DEB202361620.
Agrippina condotta a morire, HWV 110: No. 8, Tremi l'ingrato figlio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ceb69476f2b2e2a9a21961e1dac324fc977b4001bad3f1e45d42d90a172567e. 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/DEB202361621.
Agrippina condotta a morire, HWV 110: No. 10, Ecco a morte già corro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edeb2a143ac92c55ccdb3b2483c10f4e95da268e28f12a518f6a370cd43e470. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEB202361623.
Trio Sonata in A Major, Op. 5 No. 1, HWV 396: I. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511e9f6c0624c1fc4a416ba563f65524148dd0d05662e7baac0935776a2a0e76. 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/DEB202361624.
Trio Sonata in A Major, Op. 5 No. 1, HWV 396: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff56fa207d0fe621086c042c8a0fe22cce2bdf249a26cd3a0fccf0f801cde51b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEB202361625.
Trio Sonata in A Major, Op. 5 No. 1, HWV 396: III. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b3d8680b5aa12f264df2477f3b0f0ef452f8c3afb9c83fa707a8aa463412f0. 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/DEB202361626.
Trio Sonata in A Major, Op. 5 No. 1, HWV 396: V. Gavotte. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1441bd9a5efb04dae6cfd067b933e5ecb2e0a567385b0ecb59306287bede6dbb. 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/DEB202361628.
Il trionfo del tempo e del disinganno, HWV 46a: No. 2, Tu del ciel ministro eletto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5822168c59ae4ff76b5d75052d586064f8b1e98a40a0224df385bdc55c61f2b6. 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/DEB202361630.
Il trionfo del tempo e del disinganno, HWV 46a: No. 3, Un pensiero nemico di pace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf512816f8fc619bfa8229ccc4544990af8fb55c7a52a3f3eb9979811df12ab31. 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/DEB202361631.
Händel: Ah’, crudele (from: Armida abbandonata HWV 105))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cab014ca5f2d41a32dfb8d5320c12a249740b3ae4ddb8af65b72e879afe250. 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/DEB202361602.