thumb|Henk Badings Henk Badings (hĕngk bä'dĭngz) (17 January 190726 June 1987) was an Indonesian-Dutch composer. Early life Born in Bandung, Java, Dutch East Indies, as the son of Herman Louis Johan
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 0x9968bf5f57284913d74f610bc14be957b2d3aa9fb3495f57971f275d164beafe. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d96099b7-8b98-4dab-8ed1-bcae096dfc9b.json and https://artists.proofprofile.net/proofs/artist/d96099b7-8b98-4dab-8ed1-bcae096dfc9b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Badings: Concerto for Two Violins; Symphony No. 3 (Herman Krebbers Edition, Vol. 3)
Badings & Raaijmakers: Electronic Music (Collection trésors, stéréo version)
Henk Badings: Symphonie No. 9, Concerto, Largo et Allegro, Sérénade
Badings: Symphonic Scherzo - Cello Concerto No. 2 - Symphony 2
Dutch Dances No. 2 (Gelderse Peerdesprong)
Badings: Concerto for Two Violins, NO. 1 - Symphony NO. 3
Kaïn En Abel - 1.1 - Introduction / Dance of the Destructive Forces
Popular Electronics: Early Dutch Electronic Music 1956-1963
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 0x73509bd9f9ecc8d0dac8fd6f949a6d2447c0bfdc648dbbcd90786664c2edda2c. 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/NLB550400700.