Olav Fartein Valen (25 August 1887 – 14 December 1952) was a Norwegian composer, notable for his work in atonal polyphonic music. He developed a polyphony similar to Bach's counterpoint, but based on
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 0x6f2160b422a3fe5c0f573d3d56439ddc41dbf4c48fe7ac2b7be6a1d3ab0d19d1. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b048ee77-b21a-426d-bcda-6f3a3a44121e.json and https://artists.proofprofile.net/proofs/artist/b048ee77-b21a-426d-bcda-6f3a3a44121e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Valen, F.: Orchestral Music, Vol. 1 - Symphony No. 1 / Violin Concerto
Le cimetiere marin, Op. 20: Le cimetiere marin, Op. 20 (Kirkegarden ved havet, the Churchyard by the Sea)
Valen, F.: Orchestral Music, Vol. 3 - Symphony No. 4 / Piano Concerto / Kirkegarden Ved Havet
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 0x021da6ccf0a8e22909cdba046e9b27fa3df76a5119f6854d515e503288188cab. 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/SEAEQ0842010.