The Netherlands Philharmonic () is a Dutch symphony orchestra based in Amsterdam. History The Netherlands Philharmonic was formed as the Netherlands Philharmonic Orchestra in 1985 from the merger of
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 0x5ba0d99586839e6e491cf18b68e21b350dda1e191b6ddeaa274b65fda084cb85. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5eb02921-e493-4342-ac04-c2b956c0c040.json and https://artists.proofprofile.net/proofs/artist/5eb02921-e493-4342-ac04-c2b956c0c040.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Symphony No. 3 in F Major, Op. 90: I. Allegro con brio - Un poco sostenuto - Tempo I (1)
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 0xf9e723a419629c09c3fd64b9c6652146ea76d1bc8dee186de763bd62845a683f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NLY332101130.
Symphony No. 3 in F Major, Op. 90: I. Allegro con brio - Un poco sostenuto - Tempo I (3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffd7d09775d9158357d5a11a851f554afee396fc2462e78d5f5ec6599c5b74e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLY332101132.
Symphony No. 3 in F Major, Op. 90: III. Poco allegretto (1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad30c69264ea1d76057b279297f1869e541453241adb0e6821b12dbe25a8d611. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332101138.
Symphony No. 3 in F Major, Op. 90: III. Poco allegretto (2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6babeacb15793d00a9b79d359429c86546eea516d35023998ea6c066c5ab5e53. 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/NLY332101139.
Symphony No. 3 in F Major, Op. 90: III. Poco allegretto (3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfda20c2ef2cb1bd2abff5579b9ef92a33c0951578a8c16e16d70ac8003912da. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/NLY332101140.
Symphony No. 3 in F Major, Op. 90: IV. Allegro - Un poco sostenuto (2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcaca0277c10a60a10751374b4e82cd23459a568b42a917c6aba9ba808d9269. 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/NLY332101142.
Symphony No. 3 in F Major, Op. 90: IV. Allegro - Un poco sostenuto (3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f3dd3799fda57b6fa2dcc9c0adee9689c6bc0872ee8b727cc7d3458846163e. 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/NLY332101143.
Symphony No. 3 in F Major, Op. 90: IV. Allegro - Un poco sostenuto (4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70aacfbca56b17ef130b3d949c5311747f25b6091243f4d11e6f6fe1fe011da9. 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/NLY332101144.
Symphony No. 3 in F Major, Op. 90: I. Allegro con brio - Un poco sostenuto - Tempo I (2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4b79a63d59ca3787edf785d2292e3d3954f188c8765d949dd223bc079cf1de. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:47:07Z), 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/NLY332101131.
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. 3 in F Major, Op. 90: IV. Allegro - Un poco sostenuto (1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed8e56d61959c5813112d59a8a7c393c9310946aadf2d43e121532b3d6159f4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:55:27Z), 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/NLY332101141.
Symphony No. 3 in F Major, Op. 90: I. Allegro con brio - Un poco sostenuto - Tempo I (4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32510917dbbcc5bb3f49b4e4fbcb3c33c6ee29b7ce329fc49e88fc02b57e0b25. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/NLY332101133.
Symphony No. 3 in F Major, Op. 90: II. Andante (1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd655244c3a4ce1662dbefe7162076c20f8f39c086c172f104a0525ada00fd023. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/NLY332101134.
Symphony No. 3 in F Major, Op. 90: II. Andante (2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd238c5ac143faaafcd34bf56ccbbbd44ea2cada07228ee0d7192a0e7cd2d56b1. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/NLY332101135.
Symphony No. 3 in F Major, Op. 90: II. Andante (3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9043fa0755c877d709d67c0d82c5249ae8f2197bc2f39628ff31f8640a8dccd. 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/NLY332101136.
Symphony No. 3 in F Major, Op. 90: II. Andante (4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f6166e4ee446b7043458180f8b1a962db75529c74103ed27387f8878f867d0. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/NLY332101137.
Symphony No. 1 in C Minor, Op. 68: I. Un poco sostenuto - Allegro - Meno allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fe245247e298084cd2c34aa2c6c0aba38a892ecb4074c1488adf571ceb89e8. 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/NLY331108995.
Symphony No. 3 in F Major, Op. 90: III. Poco allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fea696bd87520256982403fff2771b7bc075da647d2ddd5d23ece27a197f16f. 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/NLY331109005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98479860b3281f4295c0cf551f9326605bf4768e88016ecefca821cda310599. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLY332202308.
Enfantillages pittoresques: II. Berceuse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d1d2a9e294afdd3ec6aad7e60bfba9320fa5e1c884a966531d742aabe8f1de. 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/NLY331011539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2272d9d32395d0d00c679c62eb87ee60a1e5040cc909efe782d727f905e60c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLY332202311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5d6cc89b5ee92fa75810350dfc456286b84cf4389824e266e1851f4392b640. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLY332001446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40696f442c879621996c05356f05cef435c4373f5d14d49951365337c4740d4f. 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/NLY332202316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daaf93a1c6b961db7a7d39db77c8291a592becaad018d1b8900b533b68b8121. 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/NLY332202319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5052ebb7019b7514723da2d027a443b576c1d888cce50575f653be58e509926. 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/NLY332202321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48517e2a971b8f42bc78b01724fc27d9de556f4f365c9c708338a34d33221a53. 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/NLY332202324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fa4ab947774e576e0c9a365d930da1b93243cfabf5a12e2508a4cf1b94599e. 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/NLY332202325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf694cdf039b1d5e4b518d678eaec0dbb630e0663077a9621ba1c5545100c775a. 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/NLY332202320.