thumb|right|William Schuman William Howard Schuman (August 4, 1910February 15, 1992) was an American composer and arts administrator. Life Schuman was born into a Jewish family in Manhattan, New York
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 0x210ee28ec11ef2ddb25bef6873ee41de1378f95c10903b319201157d09fdf8bb. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/508d7ade-7356-4911-979f-d32adb7721c9.json and https://artists.proofprofile.net/proofs/artist/508d7ade-7356-4911-979f-d32adb7721c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Schuman: Symphony No.10 & New England Triptych & American Festival Overture
Sure on This Shining Night: The Romantic Song in America
Schuman: The Mighty Casey - A Question of Taste
The Mighty Casey: Scene 2: This gladdened multitude (Watchman, Chorus)
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 0x57a0a701128035282210238218858b6c809c3208816262a8024b54d9382aaa44. 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/USASX0893015.
The Mighty Casey: Scene 2: A strike's a strike (Umpire, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b489864bed7b963b80896e79007d31c19e2857c6ec1ecea0accc5036a0d4046. 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/USASX0893019.
The Mighty Casey: Scene 2: Hist'ry hangs on a slender thread (Chorus, Snedeker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad406980a943f38e4640ce4b765a268ea7daf8d5a81416d253cd907ff94ff3e6. 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/USASX0893021.
The Mighty Casey: Scene 2: Oh, somewhere (Watchman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6eade9d123bac6f0ad5bd891ff1a605d8a8cf8bdba3aea3a6765be70fa105f6. 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/USASX0893022.
The Mighty Casey: Scene 1: The Mighty Casey (Watchman, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992e18148101ec9228e7763f79ea273e46cf6a9e2cccf93fddfaa916b2c277fe. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USASX0893006.
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
The Mighty Casey: Scene 1: Autograph (Charlie, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b82c0817ee2dd6e97514568d230bffcb1ee356f659eda86c46e7b77550f2f4c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USASX0893007.
The Mighty Casey: Scene 1: You look so sweet today (Watchman, Merry)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b577d15f9f39d470aad30f34fd7b94312a8f001cbdf2c48c76a2af2aaaf2cd. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USASX0893008.
The Mighty Casey: Scene 2: Two out (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db7803994ffb7fa7df8eff638baa63a6dbef6c554dae056292dd6855f88aad2. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USASX0893011.
The Mighty Casey: Scene 2: If only Casey (Chorus, Watchman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56b8b7cac964f9040e8e4a1f79b5b092ede4d91feed317cbee473938eaddc71. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USASX0893012.
The Mighty Casey: Scene 2: Surprise (Chorus, Watchman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2c7989c4dc679fd7a92ece5e9dc8222e27622c1f9eb263b0ddd744a24ce36f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USASX0893014.
The Mighty Casey: Scene 2: Rhubarb: 'Ya blind (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910f52ce26a6cf2a95644a2bac61ce059c88df368ad0e78706888961d7e3a97a. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/USASX0893017.
United States Air Force Heritage of America Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897b22df17e844bb3666be5b8948191e8bba17cd063bd4d948fbe097e2450b21. 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/USA5R1430127.