The Pittsburgh Symphony Orchestra (PSO) is an American orchestra based in Pittsburgh, Pennsylvania. The orchestra is resident at Heinz Hall, located in Pittsburgh's Cultural District. Since 2008, the
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 0x2de619d5209eaec226fcb7e9505d49ec47a06c4a2a36c44cf0be47fa89bdc8ca. 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/f2978b63-8cd8-4769-9a0f-789c1af8388a.json and https://artists.proofprofile.net/proofs/artist/f2978b63-8cd8-4769-9a0f-789c1af8388a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wagner: Overtures and Preludes; Ring Selections
Die Walküre, WWV 86B, Act III Scene 1: Hojotoho! Hojotoho! "Walkürenritt"
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 0x050c296ba56324290a09b1e3c8259e1f028385bd20ba6c595554d79ba93fb056. 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/DEF056103320.
Die Walküre, WWV 86B, Act III: Feuerzauber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcc20af84f6d2030983625b0b018ca53ef4881512af932494437901ab2a431a. 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/DEF056103330.
Das Rheingold, WWV 86A, Scene IV: Entry of the Gods into Valhalla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11520e2be7c400d0341b4b2d7435f8fb222deff34289429093a1281c47b95fd. 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/DEF056103340.
Die Meistersinger von Nürnberg, WWV 96: Prelude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc629cb4f87399328ea8f208bf8ee320997fa1842c80c0dd35f9cdf6dd18157c. 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/DEF056309250.
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 0x06e82bddd25217adab9c424c5678ea8116dcb55f03c92f6616fd8c1ace9ce9a5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056309270.
Der fliegende Holländer, WWV 63: Ouverture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b543da376fe404994e6fc491170fff6fcae7c98a73d7d5fd14ece4e11453f1c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056309280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c86e5b6601e8d8ffd352f5400d0397b646feff33c918b71d632d21e36cee3fe. 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/DEF056309290.
Götterdämmerung, WWV 86D, Prologue: Siegfrieds Rheinfahrt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e02dff96577edc2810c5e496fc14b8d14dacaf10cfa96d53e4cfea60e50f3b4. 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/DEF056103350.
Götterdämmerung, WWV 86D, Act III: Trauermarsch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167d85255e989162c4c8088aaddc5aaae85b123ff79251e721beae09ebc4e670. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DEF056103360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980b49634e97e66f6da9e02aaa2ec173c76e8aa2958a9cd1285788de64036117. 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/DEF056309260.
Tchaikovsky: Symphony No. 4 in F Minor, Op. 36, TH 27; The Nutcracker, Op. 71a, TH 35
Nathan Milstein Plays Tchaikovsky & Rimsky-Korsakov (Remastered 2022)
Brahms: Symphony No. 4 & Tragic Ouverture
Beethoven: Symphony No. 4 in B-Flat Major, Op. 60; Leonore Overture No. 3, Op. 72a
Le Carnaval des Animaux, R. 125: Introduction et Marche royale du Lion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023860d8c381aa45241ad769bb8ea906590cc6f7d436e9729fce4fa4f7c39308. 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/NLA508015101.
Le Carnaval des Animaux, R. 125: Hémiones (Animaux véloces)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdbada650f9c8339ac5eaeb5920e51e55da903ede32a806038cc1ca0bb4ed4c. 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/NLA508015103.
Le Carnaval des Animaux, R. 125: Tortues
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31bdedb94f8f8b7970c3b008531a69f2825ab623530c1c7d024ef59d379ac629. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NLA508015104.
Le Carnaval des Animaux, R. 125: 2. Aquarium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ea0cfb576bc86e06e4cbd98f39b908d636a055818f2981e68aab2cc6f2a89b. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/NLA508015107.
Le Carnaval des Animaux, R. 125: Le Cygne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1a43e2833c2977eb1cbfa0d0351e47e6bf956f7711360ad82a0a6506f7f42a. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/NLA508015113.