The Australian Chamber Orchestra (ACO) is an Australian orchestra focused on chamber music based in Sydney. History The Australian Chamber Orchestra was founded by cellist John Painter in 1975.Verghi
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 0xceb1c26de5e6b81304b29ca1b3c774514f1c3e3588f30156367be7b9384cfb10. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79f4b5b7-f056-4586-82d2-c432ca7db98b.json and https://artists.proofprofile.net/proofs/artist/79f4b5b7-f056-4586-82d2-c432ca7db98b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Haydn: Cello Concertos Nos. 1 & 2 - Beethoven: Romances Nos. 1 & 2
Cello Concerto No. 1 in C Major, Hob. VIIb:1: I. Moderato
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 0x4dda700bcf807c4af0a437a53eb4729888246b88104d6c40dfe74d08a44344b8. 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/DEB950340901.
Beethoven Symphonies 1, 2 & 3 'Eroica' (Live In Concert)
Symphony No. 1 in C Major, Op. 21: II. Andante cantabile con moto - Recorded live in City Recital Hall, Sydney, Australia, 11–16 February 2020
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b053e75d574568801ca09dc6a2a012249feac4bf29f75852e028665be0864a. 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/AUAB02350367.
Symphony No. 1 in C Major, Op. 21: III. Menuetto. Allegro molto e vivace - Recorded live in City Recital Hall, Sydney, Australia, 11–16 February 2020
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce6580cf03d3067bc5018bf41161a084ee5a95b78f362f97233bde83434f962. 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/AUAB02350368.
Symphony No. 2 in D Major, Op. 36: I. Adagio – Allegro con brio - Recorded live in City Recital Hall, Sydney, Australia, 11–16 February 2020
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Symphony No. 3 in E-Flat Major, Op. 55 "Eroica": I. Allegro con brio - Recorded live in City Recital Hall, Sydney, Australia, 11–16 February 2020
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36aaf3ad70bebaacd7e758581235525e84db310d308e0be8fc0a809b11b5546a. 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/AUAB02350374.
Symphony No. 1 in C Major, Op. 21: I. Adagio molto - Allegro con brio - Recorded live in City Recital Hall, Sydney, Australia, 11–16 February 2020
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0e7db0fe45a091f1a6116407a732587f6892f657f8577bcbcbe92420ad9d60. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/AUAB02350366.
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
The Four Seasons, Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": II. Adagio - Presto
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The Four Seasons, Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": II. Adagio molto
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The Four Seasons, Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": I. Allegro non molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f7fc08bbc4a4267d2b2274881f4962b340b0d5fdfc3c75e21f2e313237aa66. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/SEAEW1403100.
The Four Seasons, Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6905dfc319ca793b22bd541588febe5e912c9a94433c8aa3ceb80b1767c4d023. 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/SEAEW1403110.
Violin Concerto in D Major, RV 226: II. Largo
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Concerto for 4 Violins & Cello in B Minor, Op. 3 No. 10, RV 580: II. Largo
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Violin Concerto in A Minor, Op. 3 No. 6, RV 356: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81eb269b2e645f27307f808344340c71803c7eee93e12ee8e998744e40f32e29. 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/SEAEW1403190.
Concerto grosso in D Major, RV 562 "Per la solennità di San Lorenzo": II. Grave
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The Four Seasons, Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ec18fcb345a189899aafe1a658dcb8baa0ceea5acb5a60f36f5f043b50653c. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/SEAEW1403010.
The Four Seasons, Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc7196441b57670411797c46872f8fcdb1019d62fec87b9a4e989de2238d3ab. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEW1403020.
The Four Seasons, Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": III. Danza pastorale. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c430545316a6efaa05cbc5518ae4f50217e636233a06ca0f6dac4be6ec25f6. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEW1403030.
The Four Seasons, Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": I. Allegro non moto
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The Four Seasons, Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0b1dd54ab946d6bacfe8a26f9b3c69147acfe48699a302355bd5d8cc7b8b61. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SEAEW1403060.
The Four Seasons, Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5d5dc72ad2da7cf6873ab352e6c44f951a50a327eca1e9886e38e7f2d59e29. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/SEAEW1403070.
The Four Seasons, Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880b102ac9f3a2e070cdcc05a580db5d7d37673cbe74bbe35cc5730295514e3a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEW1403090.
The Four Seasons, Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": III. Allegro
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Concerto for 4 Violins & Cello in B Minor, Op. 3 No. 10, RV 580: I. Allegro
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Concerto for 4 Violins & Cello in B Minor, Op. 3 No. 10, RV 580: III. Allegro
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Violin Concerto in A Minor, Op. 3 No. 6, RV 356: I. Allegro
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Violin Concerto in A Minor, Op. 3 No. 6, RV 356: II. Largo
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La verità in cimento, RV 739, Sinfonia: I. Allegro
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La verità in cimento, RV 739, Sinfonia: II. Andante
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Beethoven: Concerto for Violin and Orchestra, Op. 61 - Mozart: Symphony No. 40
Vivaldi: Flute Concerto in D Major, Op. 10 No. 3, RV 428 "Il gardellino": III. Allegro
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Vivaldi: Flute Concerto in D Major, Op. 10 No. 3, RV 428 "Il gardellino": I. Allegro
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Vivaldi: Flute Concerto in D Major, RV 429: II. Largo
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe3440afe64275e712f002a374cc97478959271c76e3ac99232c745a73b096a. 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/GBAYC0501766.