Heiner Müller (; 9 January 1929 – 30 December 1995) was a German (formerly East German) dramatist, poet, writer, essayist and theatre director. His "enigmatic, fragmentary pieces" are a significant co
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 0x8d0218c059ddbf558c9be3a5e09667672d8f467288c1984a5045113b36fb20ae. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7e26149-3dcc-4cb2-99ff-2fcd52419f1c.json and https://artists.proofprofile.net/proofs/artist/c7e26149-3dcc-4cb2-99ff-2fcd52419f1c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Der Mann im Fahrstuhl (The Man In The Elevator)
In einem alten Fahrstuhl (In An Old Elevator)
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 0x91a02d687bf83236a4bc5e5c52c4073c6953a3840b6ace4122d4f114ccba7dda. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB338836901 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c9baa5a9bd4642facadbafe9a2a81df58d2d58397ed98ba70d2e989fed6aa4. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB338835012 — a six-check JSON result.
Es geht um einen Auftrag (It Concerns A Task)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f0f435406bf0a5b624f0cf6bfce2d5ff754c5f37d2e4b7917172bcd3401301. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB338836902 — a six-check JSON result.
Fünf Minuten vor der Zeit (Five Minutes Too Early)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af3efa560fdc8d977cf47c00f96602893d8f5493e7262ce4abd7de5e1d4f374. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB338836903 — a six-check JSON result.
Drei Stufen auf einmal (Three Steps At A Time)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bd66021c7e3364ad85e70f13a54cc9893df2bb12781d845f5a0662a55ec1dc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB338836904 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453cfea3e33ddd4db10d95bf63b710c1bac6c9c9c5ea83240e2fb572afd5c225. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB338836905 — a six-check JSON result.
Ein schneller Blick auf die Uhr (A Quick Glance At My Watch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa00c40c36a6670d81925d7dc9aed4c64356f4c4c7cf17201d154069190f9ce1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB338836906 — a six-check JSON result.
Allein im Fahrstuhl (Alone In The Elevator)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc215b4b57c31c0c47a80cbc7cd69697c6efe77313c2ab35588c28b0adc63be0a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB338836907 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fbf849968ef7bc13696c0bb01bf74fdd5e17d3ef422eedf03cae6a42d45123. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB338836910 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb909614bca383001c5320ed048f74bd418cc6eca89df98b626bf58721ae62b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB338836911 — a six-check JSON result.