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 0xbe9ba5977c080f45836e3f1768783f1c75fccd2f709eeb362855a052e825d50f. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb83977e-f10b-4f87-954a-ad8184f9ace1.json and https://artists.proofprofile.net/proofs/artist/cb83977e-f10b-4f87-954a-ad8184f9ace1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Symphony No. 2 in D Major, Op. 73: I. Allegro non troppo
Brahms: Symphony No. 2 in D Major, Op. 73
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 0x1e40b1cf441119413de18926fb83aad75ab94da629bb196bc96f9085df2279e0. 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/UKJE71800319.
Symphony No. 2 in D Major, Op. 73: IV. Allegro con spirito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f53e9627fda78758392b189c3d85d13c00faf7e3a8d48b56f90a1269fa6754d. 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/UKJE71800322.
Symphony No. 2 in E Minor, Op. 27: III. Adagio
Rachmaninoff: Symphony No. 2 in E Minor, Op. 27
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd357fc62839fa161739ba36780ba48d0996a5c6b05759b7d756ecf8fec6a115a. 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/UKJE71800117.
Symphony No. 3 in F Major, Op. 90: I. Allegro con brio
Brahms: Symphony No. 3 in F Major, Op. 90 / Tragic Overture in D Minor, Op. 81
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3fabf4f7e16638b46d290a70ff8567d29a9c3df98b9267efbf7969db80abd4. 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/UKJE71800110.
Symphony No. 3 in F Major, Op. 90: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1c63f37aae5d7b7feb21dfa5d1f2f5521091f1f7b7495155af8324fdd04af0. 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/UKJE71800113.
Symphony No. 2 in D Major, Op. 73: II. Adagio non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23372a2c3df13d2b288eb351bcedb4e28dfab6856b0b2ea3d4a346193d82196. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/UKJE71800320.
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
Symphony No. 2 in D Major, Op. 73: III. Allegretto grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942510a54c1a4a59fbe51138f6a1a97f813647139876a6d8ff9d9752f87fcdc9. 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/UKJE71800321.
Symphony No. 2 in E Minor, Op. 27: I. Largo - Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5841ca6f1f767d1decc09a58e82f0289526d1e470d07a6616b8234214f38f9. 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/UKJE71800115.
Symphony No. 2 in E Minor, Op. 27: II. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6da493e90611456c3a806931452c6a0bd74d9400bbed7ece844f1f11873386. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKJE71800116.
Symphony No. 2 in E Minor, Op. 27: IV. Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25af1213655bbbb4b1849d79c36ca8ef7b031178e894cd124cbf1d6258dd116e. 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/UKJE71800118.
Symphony No. 7 in A Major, Op. 92: I. Poco sostenuto
Beethoven: Symphony No. 7 in A Major, Op. 92
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca2730d29c4da37be769e43924b78da1dd3070842c0f211ebf8786584b136db. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/UKJE71800106.
Symphony No. 7 in A Major, Op. 92: II. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ac73a1671b2f553865ccbb0fe0258e36180b3edaa6240eacc365e7c89890dc. 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/UKJE71800107.
Symphony No. 7 in A Major, Op. 92: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9ba168fbf59f44f24adecac3156852da3dd8ca70907efe0f8777b7700a385c. 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/UKJE71800108.
Symphony No. 7 in A Major, Op. 92: VI. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07226b9dca4436766256d0f77988502e8ffca3c3fea0af1c88a38f7b7c46609. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/UKJE71800109.
Symphony No. 3 in F Major, Op. 90: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b5643a1d1c45dd4f9a81227680d0894869f7a28a96b861d2fe3c87008e75a7. 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/UKJE71800111.
Symphony No. 3 in F Major, Op. 90: III. Poco allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e84b37e1f731bc6a59cee394e398674bf5e2ee2af7c71096a07e9393e225bc2. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/UKJE71800112.