Charles Edward Ives (; October 20, 1874May 19, 1954) was an American modernist composer, actuary and businessman. Ives was among the earliest renowned American composers to achieve recognition on a gl
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 0x6983d5c8e82ff1519f2c5f8527772bbd354e26be2ba8a03480467475d108a4eb. 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/79a50cd3-fbf7-4bd4-8d42-eb8bec7441e7.json and https://artists.proofprofile.net/proofs/artist/79a50cd3-fbf7-4bd4-8d42-eb8bec7441e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Klassische Musik für den Sommer - Über das Meer
Debussy: Petite suite, CD 71, L. 65: I. En bateau (Orch. Büsser)
Orchestre de chambre Jean-François Paillard
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 0x0b2412278ab35316db87d61b3eca73ff5203cf3ceedfd42d1daed34e678d96cb. 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/FRZ201900495.
Satie: Sports et divertissements: No. 9, Le bain de mer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa397307adb29f5e9532b2ab2f40c797e5c1d1fd1974adb9ecee17286dbb99580. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRZ118306170.
Britten: Four Sea Interludes from Peter Grimes, Op. 33a: No. 3, Moonlight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd39da59fcc2b535508cb548777348685e8bcea3c23b0899e1417e401a2e3091. 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/GBAYC0301468.
Chopin: 12 Études, Op. 25: No. 12 in C Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0245b4b368172c8aa1569119be561437f359603105e6ff3c212b71c82cf06cac. 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/FRZ209908224.
Vivaldi: Flute Concerto in F Major, Op. 10 No. 1, RV 433 "La tempesta di mare": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80dfc37d7519a3122eb904b3af772a7d67ef612b8559fd279bbf7c4465e10f9. 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/DEA809177041.
Debussy: La Mer, CD 111, L. 109: II. Jeux de vagues
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948be09e4f0367eb08aea4d99e1f86dc2a340404a41589a0f1872427a7f11988. 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/GBAYC0402473.
Bridge: The Sea: I. Seascape. Allegro ben moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7e862034464b90236592f53d0094b47ccb1613445dbd0e074687a10e44349e. 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/GBAYD8900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb27b5ec8c6b62d86ed2d378584cdea633301ca78f39f87c18971e2b1a13f2b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLA508400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a611012ea09411962df3a4264db41d1d6b51542e4b3e691d57b39938e63a3b9. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/NLA508400507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9aff6023467368f0994fa62f3b9d951683eecead8c440d1baf5940ea989b070. 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/NLA508400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53d6cbb959418df2780a43a2ba265d44ffb34bef26ee03bdd654e0b3f024163. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/NLA508400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a39e950e47c3919fedd9760b472b01aa480b2073db5186c38f83a6d960c2b0. 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/NLA508400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770141646b64c81a4a30daf70ebc6aaedcc437525926b47fa65e0a40c470b91f. 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/NLA508400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4270807503ee849640d917a78aaba9a36c335b1e47096c924af9cbc395150bd5. 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/USF067302010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2955c35eb2fcd7b14cf9331e9a113f3f5c93c8ade3cabfdc504af6b0127bd790. 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/USF067302060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3789e8fa0fc353d76f223b8cd4b4456d78e8ce5896a6a6eee055fc739ec051a9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLA508000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53242cb7657c251816b0ed64b8ac251deee83ed51af4279306ec1c83b3f6f98c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USF067102120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad84316f0d24367b58ba11391504c77c1a7b4c1dd147e4c97fbfacc0a330a3b1. 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/NLA508400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e30a1a9ec13189d07b001960d5e865cf1ba6368cc56addf35de5809c1b8c290. 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/GBF077710870.
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
Sure on This Shining Night: The Romantic Song in America
Ives: Symphony No. 1; Symphony No. 4; Central Park in the Dark
Ives: Three Places in New England; Symphony No.3; The Unanswered Question; A Set of Pieces
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ff84fa764cd2c1be3863d6b540fe669995fff0b4b7dec0ee7e4ba78af2c166. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/DEF059303030.
A Set of Pieces: No. 1 In the Cage (1906)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1569a86d21487e95467797cd97f6f8883c1fff396c04bafbd1cc1926b701ba. 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/DEF059303041.
Symphony No. 3 - "The Camp Meeting": I. Old Folks Gatherin' (Andante maestoso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa0012bf12183b4e4e6da1bf2bd57953df67795cbf4bab8dead1ee2881505e5. 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/DEF059303051.
3 Places in New England: No. 1 The "St. Gaudens" in Boston Common (Col. Shaw and his Colored Regiment)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab7fdec70c5423393d26b26c8db4293128c096f50b0dbdf3b13ff93f9cec066. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEF059303021.
3 Places in New England: No. 2 Putnam's Camp, Redding, Connecticut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd957ca3a251ab3c1fc1831acf512688b98bf9a87b81c7fbc0e24e1c6512d801. 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/DEF059303022.
3 Places in New England: No. 3 From "The Housatonic at Stockbridge" by Robert Underwood Johnson
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4917b4c84dfc1ea5305e662ab0f8dca802a6177d301bc31c25858c4b574d68. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/DEF059303023.
From the Steeples & the Mountains: American Music for Brass
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abf67e8ba261a74819f1e9e489e6017aa00c93307f6d9c5ac08975995333ff1. 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/GBAJY9251701.
Ives, C.: Holidays Symphony (Excerpts) / The General Slocum / Overture in G Minor
Ives: Set No. 3 for Chamber Orchestra: I. At Sea. Adagio sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45b19ad11d7bc38ae135e7e704d9ec95371e58d604bb53f53d99bf4d908b22b. 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/DEC629100767.