Irwin Kostal (October 1, 1911 – November 23, 1994) was an American musical arranger of films and an orchestrator of Broadway musicals. Biography Born in Chicago, Kostal attended Harrison Technical H
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 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 0x9385afe7eb7de4a78cac80bfe4c7c12b6f7c91c275b84caee2fc14f54850e03e. 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/0bcc3283-009a-4560-9b3d-558a78c9e08a.json and https://artists.proofprofile.net/proofs/artist/0bcc3283-009a-4560-9b3d-558a78c9e08a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fantasia (Original Motion Picture Soundtrack/Japan Release Version)
The Sound Of Music (Original Soundtrack Recording)
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 0xa5c8435e18e0ec3c05db650502d00fe74f0f3c1ac2ea7fc9e017865d75ab80df. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC16406208.
The Sound Of Music (50th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1289e51d18c7edd92dea3ce0436b00e4c66dc32d355d0b6f4718831b00dcf95. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC16406237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc599f6e7ba1090a491fe054546d8b74b265b0f4c7eb22a6e5e8a07f2f241f77. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC11403222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9590320f65e655cc1007d5a1c3691b37957a31f280140da50d5dccee3b35ce6a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC11403225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0ca98a679d3e4a302cbf139ed27709ef20b5caf4288130b8ba720463611022. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC11403223.
Goodbye Maria / How Can Love Survive Waltz - Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94ce01db883aa468652639df6b93173f0d18c20f346c2a3287916b60bb8bd88. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC11403224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea374e747eca7e05080309bf2fe939a31800fb99c624757322c0bf40d95ccf27. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC10503402.
The Sound Of Music (Original Soundtrack Recording / Super Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f40c3ab42b5c8225e7cf4acfb62e5a1b9f3ec5bfefed78ce0c25d6252a1e6c. 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/USC4R2218672.
Escape / Climb Ev'ry Mountain (Reprise) / Finale - Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e99f430ce1172c6fba37a71006586b9a77ef44ce5144d563067224cd8a8b8fe. 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/USRC11403229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36837022f90d81501f7ff4dd4780c7c9e8710ef01f4e2480668e8467e39093fb. 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/USRC10503406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd6fd8f44bac318c0600f1bf750d5ea3baf5fee10a32aba8ed280afae247dc4. 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/USC4R2218681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ab92697a592f887c4327d701e70de3c600d33dd662840683dcddead3ac19ba. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USC4R2218680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5b6f7de8859cb968a24204df3fba00c3dc542018055327c6e19b35a4741e1d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USC4R2218683.
The Sound Of Music - Reprise / Film Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf7a9a582282fb4254014990e5b7498a4f52ecd0a061e77619406a659e9138a. 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/USC4R2218678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0283e345bea347adbe44180ea8c60995af300aebbb4cd511dc3cec559188a30e. 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/USC4R2218687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f3ac98128778394b86ffe4c82bd361879a2fa5b22eba06b6ae2b64f99be74e. 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/USC4R2218682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d284feb4a72f37d37429b9d4a3f7b054a01e6f535e7f9200d0009d8b8b1ebbd. 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/USC4R2218684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fb8ff767edafc8f59134630f64a32b08ca169e9b82b885bb933a93902b135e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USC4R2218664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c92edafa02fe98d67cf157352c56cd8a2886b0f1ff3378e3c907bea7b927ad8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USC4R2218675.
My Favorite Things (Part 2) / Salzburg Montage
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8974eafadb3f0392a7783116e4e20b5197177258ab733f5c87e0e2102eeb38. 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/USC4R2218674.