The Rotterdam Philharmonic Orchestra (RPhO; ) is a Dutch symphony orchestra based in Rotterdam. Its primary venue is the concert hall De Doelen. The RPhO is considered one of the Netherlands' two pr
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 0xeebabd12880203043ef29765e2203f5cb3d42c35e179875a1191636d7dc76637. 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/8db9fc5b-ac11-4e2d-a8dc-2aeccce8d998.json and https://artists.proofprofile.net/proofs/artist/8db9fc5b-ac11-4e2d-a8dc-2aeccce8d998.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mendelssohn: Le Songe d'une nuit d'été, Op. 61 - Britten: Nocturne, Op. 60
Mendelssohn: A Midsummer Night's Dream, Op. 61, MWV M13: No. 1, Scherzo
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 0x81be82c677a71bfd44b785b27c3d88c4547a6348307f5e59ff49b75ef48fda0f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAYC9000292.
Mendelssohn: A Midsummer Night's Dream, Op. 61, MWV M13: No. 5, Intermezzo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc513847d2b41aa521a8382f8ebc0d3a244f698e14bb5ea947a0d9d8e734859. 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/GBAYC9000295.
Mendelssohn: A Midsummer Night's Dream, Op. 61, MWV M13: No. 9, Wedding March
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063e22c7e43648ad1032dfe12d23b31d17009506bc75e42fe411d6f8336c2189. 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/GBAYC9000297.
Mendelssohn: A Midsummer Night's Dream, Op. 61, MWV M13: Overture, Op. 21, MWV P3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081d3646fe46e92432d90d3381885427a7908130bff3de1ae5c2352cbc6e1f11. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/GBAYC9000291.
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
Rachmaninov, Mussorgsky, Prokofiev: Orchestral Works
Romeo and Juliet, Op. 64: Montagues and Capulets
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed621fd36bdb3dbffb5f7dd2c710bf07f4d6f70bfeda202927f55706bb4b298. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLA507300272.
Beethoven: Symphony No. 8 in F Major, Op. 93 / Tchaikovsky: Francesca da Rimini, Op.32, TH 46 / Turnage: Piano Concerto
La traviata / Act II: Di Provenza il mar, il suol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c588cdbe8f399d4332d6367e86f916380f5ad1afb3c5e3aa163942228f9fc1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLA509004204.
Préludes / Book 1, L. 117: La fille aux cheveux de lin (Arr. Koncz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae33889fe2cf4257206c23c3347bc8582a313af13c76ad7d211ad4ea0fb13fff. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBUM71207688.
Beethoven: Symphony No. 7 in A Major, Op. 92: II. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bc942c1bd68bd27012bdd6f5f108569cf8dc989147a3ceaf9eee168632b15c. 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/GBAYC2002550.
Ravel: Ma mère l'Oye, M. 60: III. Laideronnette, impératrice des pagodes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e911b8387d07d71dad5000a21a5099aa803a34e885619f57a176334633b7a4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBAYC0900885.
Klassik 100 Meisterwerke: Klassik die man gehört haben muss
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063e22c7e43648ad1032dfe12d23b31d17009506bc75e42fe411d6f8336c2189. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBAYC9000297.
Pelléas et Mélisande, Op. 80: 4. Sicilienne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8108f3349ad8d7bc8fa77796b8150ab9b80298e9a1e3be0f55dc0fdeb933d87f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLA507901814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c588cdbe8f399d4332d6367e86f916380f5ad1afb3c5e3aa163942228f9fc1. 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/NLA509004204.
A Midsummer Night's Dream, Op. 61, Act IV: Wedding March
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063e22c7e43648ad1032dfe12d23b31d17009506bc75e42fe411d6f8336c2189. 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/GBAYC9000297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b5fa8bc82e4a819a3572941273714cfdf2ffeb0b8f90979349ced416911221. 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/NLA507500213.
Symphony No. 8 in G Major, Op. 88, B.163: III. Allegretto grazioso - Molto vivace
Bartók: Concerto For Orchestra, BB 123, Sz.116 / Dvorák: Symphony No.8 in G Major, Op.88, B.163 / Debussy: Nocturnes, L. 91 / Haydn: Symphony No.44 in E Minor, Hob.I:44 -"Mourning"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97b10e0ac39372eb49a995585e76c9aae375711edd63649a77474175a659832. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:35:37Z), 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/DEN961600133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a50e66c680366e2763b500a0d8dd6d177f2920b81627ab0b3b43461c8149d5b. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/NLA507701305.
Symphony No. 6 in B Minor, Op. 74, TH 30: II. Allegro con grazia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18f30c3dbd3c113997371cfd6402279873d8842b1b1ab7ebd6b8d8550937812. 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/DEN961204042.
Pictures at an Exhibition (Orch. by Maurice Ravel): 15. The Great Gate of Kiev
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12403a5cc94058f154ef3aa0286acb779259b0d8f16a8b4a53c0dececad35fe8. 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/NLA507400467.
Symphony No. 8 in F Major, Op. 93: II. Allegretto scherzando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0387e72f04b1657a2c839dc6526532e22846d22fa3729f0b92004f39b4af3f. 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/DEN961601222.
Concerto for Orchestra, BB 123, Sz. 116: II. Giuoco della coppie (Allegretto scherzando)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32290f10ab1940e6440e2ccdae1fd66ce5516e77b8c8385f85a0d0d6f651a8d3. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DEN961102282.
Symphony No. 3 in C Minor, Op. 78 "Organ Symphony": 2b. Maestoso - Più allegro - Molto allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691a972abba84fe1d38707d6ff944ff7c45a2debb76bb3f9438e4b3d4e7820ff. 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/NLA507523204.