Collegium Musicum 90 is an English baroque orchestra playing on period instruments. It was founded by violinist Simon Standage and conductor Richard Hickox in 1990 and was jointly directed by them (ei
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea81e40fd648ea3e4932b3f3adaecd942414f0938314373e4cc5554a13e87fc. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7519330-3ff4-4676-9506-6e2a053ca272.json and https://artists.proofprofile.net/proofs/artist/a7519330-3ff4-4676-9506-6e2a053ca272.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Haydn: Nelson Mass, Ave Regina & Missa Brevis
Rinaldo, HWV 7, Act II Scene 4: Lascia ch'io pianga (Arr. for Orchestra)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e078a87c1233ff92356d01bc6d6407a13452befb8b72c1a69ca4dab27638df. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD0001817 — a six-check JSON result.
Albinoni: Double Oboe & String Concertos, Vol. 2
Oboe Concerto in B-Flat Major, Op. 7 No. 3: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8373af7f7ce11d9d8a59cd54e1cc4fd36586cb9972f4e0a92df2bb56fc43bbc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9504301 — a six-check JSON result.
Oboe Concerto in B-Flat Major, Op. 7 No. 3: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1067da574b9843266a9efb5dc1c900226dd51695b251101789086aed015c84c0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9504302 — a six-check JSON result.
Oboe Concerto in B-Flat Major, Op. 7 No. 3: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7ff44596270806fc17ca4dfc62d43b2225d949307dc065849ba9ea79564a3d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9504303 — a six-check JSON result.
Oboe Concerto in F Major, Op. 7 No. 9: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f25eff14a6dc9b2fcf19dca44a50280923da8b2be2e260a7d60d31ac7f2ae59. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9504304 — a six-check JSON result.
Oboe Concerto in C Major, Op. 9 No. 5: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0b96c9b0ab8bb8f71711e62b9941244a67ab0ee9d764ba2724606dbc04535e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9504307 — a six-check JSON result.
Oboe Concerto in C Major, Op. 9 No. 5: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ff010ab0bbb7b46f74fe4e93fc672c551bbaed24dfb7234d0ccd0f7e9f0452. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9504309 — a six-check JSON result.
Oboe Concerto in G Minor, Op. 9 No. 8: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e0eeaa0b089650282d4cd7f03d7fe9d63eac1afbe06319bea00faa2db804d4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9504311 — a six-check JSON result.
Oboe Concerto in B-Flat Major, Op. 9 No. 11: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe15f9c73d960fd8e176d83dd9e711536287b2b1e5f719f01dd13d8c188ea5a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9504316 — a six-check JSON result.
Concerto for Oboe and Strings in D Minor, Op. 9 No. 2: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95068ff18cdc20d6e26565731302936717cffc188d8629578ed3fae3131fde18. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9504319 — a six-check JSON result.
Concerto for Oboe and Strings in D Minor, Op. 9 No. 2: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337490c87f54267c044d8c2ea0b47a48c46157432912e7d6f46d00cf68e07a63. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9504320 — a six-check JSON result.
Oboe Concerto in D Major, Op. 7 No. 6: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fb34878818954466f6ee628fd61666f274fdf4e5382712651100ddd1a09e40. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9504323 — a six-check JSON result.
Oboe Concerto in D Major, Op. 7 No. 6: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8298ee5b150cdc77559cf778659497cd6c7a53bd3e7c673381728f789b19a20f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9504324 — a six-check JSON result.
Orchestral Suite in B-Flat Major, TWV 55:B8, "Ouverture burlesque": I. Ouverture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53126086075194cd65a3bf14552a2fcb6b32b287204c5942866681f9a16e418. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9109301 — a six-check JSON result.
Orchestral Suite in B-Flat Major, TWV 55:B8, "Ouverture burlesque": IV. Colombine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff95d0469396e78f28ea84cbfa75faa6d1b8eb220d15785ef8dcbe3ad665d044. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9109304 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa162a037b0ba4283c721e73a7fd46449a65d831331c2975da16b23e5c53ca254. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9812801 — a six-check JSON result.
Mass in C Major, Hob. XXII:9, "Paukenmesse": I. Kyrie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe884bc9afd4b0c06edc62f9a4fc78513e0ec1284082bd6627303e54765a7e26a. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9812802 — a six-check JSON result.
Mass in C Major, Hob. XXII:9, "Paukenmesse": II. Gloria. Gloria in excelsis Deo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6311a81d222d2a33855bf93ad802547a2a4592ae65c0a0b8d25319d13109b598. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9812803 — a six-check JSON result.
Mass in C Major, Hob. XXII:9, "Paukenmesse": II. Gloria. Qui tollis peccata mundi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ee70f52aaa47ae444b6cfbbde08cb8bf5070c1e4dbee419252dd4e6a9bf8dc. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9812804 — a six-check JSON result.
Mass in C Major, Hob. XXII:9, "Paukenmesse": II. Gloria. Quoniam tu solus sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856e7c98ac81fdf501aa36d65e81ecc344df60cdba7d8fc3b7e7364e8872aed8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9812805 — a six-check JSON result.
Mass in C Major, Hob. XXII:9, "Paukenmesse": III. Credo. Credo in unum Deum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8756e3dd78811d09e97770f6a468113cd634cb181433600203a3a597889a838. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9812806 — a six-check JSON result.
Mass in C Major, Hob. XXII:9, "Paukenmesse": III. Credo. Et incarnatus est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10ea6070253c0abb4ed73c5de58407a3402d4fff406dd0a93203d3e35fbc254. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9812807 — a six-check JSON result.
Mass in C Major, Hob. XXII:9, "Paukenmesse": III. Credo. Et resurrexit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e0efe0a6e9204cd096b578cca509e10c58ab12993088099dba33dbb55c0cc0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9812808 — a six-check JSON result.
Mass in C Major, Hob. XXII:9, "Paukenmesse": IV. Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0c6ff80bb315f97c20c66bcd7e83f2843485780e946146446ff7edaa4cb965. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9812809 — a six-check JSON result.
Mass in C Major, Hob. XXII:9, "Paukenmesse": V. Benedictus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598e5efeb4e8665db9fecf889c0ee377aa04aa48609173b44c58b41dc514cf0c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9812810 — a six-check JSON result.
Mass in C Major, Hob. XXII:9, "Paukenmesse": VI. Agnus Dei. Agnus Dei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda278aeddb2604d2b9d97a6d4b90ff79482363904517cce4d3701fddd13bbe4f. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9812811 — a six-check JSON result.
Mass in C Major, Hob. XXII:9, "Paukenmesse": VI. Agnus Dei. Dona nobis pacem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb8f9e7ae23b7e6fc46ce3cd0f3f61ac311dab391362cacd7b5ed961de3e368. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9812812 — a six-check JSON result.
Alfred, König der Angelsachsen, Hob. XXX:5: Aria des Schutzgeistes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba39d643e1894466eb66634578864925f6fda8438cfd0f08ca058c5a0e30a19. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9812813 — a six-check JSON result.
Hummel: Mass in E-Flat Major, Te Deum & Quod in orbe