Martin Walker may refer to: Martin Walker (actor) (1901–1955), British film actor Martin Walker (football director), former director of Hull City football club Martin Walker (reporter), British re
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 0x552bfc50994486f2ad8f662dd1436ccc8934ca1b0cc285a780f4658869a54533. 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/d5884549-1e22-422d-87d4-e5cf4068c01d.json and https://artists.proofprofile.net/proofs/artist/d5884549-1e22-422d-87d4-e5cf4068c01d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Grand Cru [Bruno, Chef de police, Band 2, Der zweite Fall für Bruno, Chef de police (Ungekürzt)]
Bruno Chef de police [Bruno, Chef de police, Band 1 (Ungekürzt)]
Schwarze Diamanten [Bruno, Chef de police, Band 3, Der dritte Fall für Bruno, Chef de police (Ungekürzt)]
Delikatessen [Bruno, Chef de police, Band 4, Der vierte Fall für Bruno, Chef de police (Ungekürzt)]
Femme fatale - Der fünfte Fall für Bruno, Chef de Police [Bruno, Chef de police, Band 5 (Ungekürzt)]
Reiner Wein - Der sechste Fall für Bruno, Chef de police [Bruno, Chef de police, Band 6 (Ungekürzt)]
Delikatessen - Der vierte Fall für Bruno, Chef de police [Bruno, Chef de police, Band 4 (Ungekürzt)]
Femme fatale [Bruno, Chef de police, Band 5, Der fünfte Fall für Bruno, Chef de Police (Ungekürzt)]
Reiner Wein [Bruno, Chef de police, Band 6, Der sechste Fall für Bruno, Chef de police (Ungekürzt)]
Kapitel 1 - Bruno Chef de police - Bruno, Chef de police, Band 1
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 0xbac4665a401a57a45e25d29ab370757f20b249ec1135fb889b91821716bc68e1. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEXN82113561.
Kapitel 3 - Bruno Chef de police - Bruno, Chef de police, Band 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d8dd4f8901acfa6cde2c0ba0691695fe424594d2daf8fc474ff87b13f76f91. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/DEXN82113563.
Kapitel 5 - Bruno Chef de police - Bruno, Chef de police, Band 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb346a19f308ca36ac08cbd4e84d32391d21d960c060e8b0cfd69f6af58a76575. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEXN82113565.
Kapitel 7 - Bruno Chef de police - Bruno, Chef de police, Band 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded195bf870d7249c005f4d7f6c4505be5178e263d6243e0c42de736e1c32257. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/DEXN82113567.
Kapitel 14 - Bruno Chef de police - Bruno, Chef de police, Band 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d5ce5198ba5c25ab75bbf9ea811916388a242391d55971c4291f6bea24a79b. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/DEXN82113574.
Kapitel 21 - Bruno Chef de police - Bruno, Chef de police, Band 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5f09773bddbfa83c0c842076df8c62741020f2b3ca81b774960053248fe255. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEXN82113581.
Kapitel 24 - Bruno Chef de police - Bruno, Chef de police, Band 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a743238d96dd04bbafa36764f8d4cd8a0a15a1cd6ad241e880e154d1b0d465. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEXN82113584.
Kapitel 25 - Bruno Chef de police - Bruno, Chef de police, Band 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3d9f80f6a9418d96987c990190382d9e9f47f123e926c84172ddc90e70af59. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/DEXN82113585.
Grand Cru - Der zweite Fall für Bruno, Chef de police [Bruno, Chef de police, Band 2 (Ungekürzt)]
Schwarze Diamanten - Der dritte Fall für Bruno, Chef de police [Bruno, Chef de police, Band 3 (Ungekürzt)]
Provokateure [Bruno, Chef de police, Band 7, Der siebte Fall für Bruno, Chef de police (Ungekürzt)]
Provokateure - Der siebte Fall für Bruno, Chef de police [Bruno, Chef de police, Band 7 (Ungekürzt)]
Eskapaden [Bruno, Chef de police, Band 8, Der achte Fall für Bruno, Chef de police (Ungekürzt)]
Eskapaden - Der achte Fall für Bruno, Chef de police [Bruno, Chef de police, Band 8 (Ungekürzt)]
Grand Prix [Bruno, Chef de police, Band 9, Der neunte Fall für Bruno, Chef de police (Ungekürzt)]
Grand Prix - Der neunte Fall für Bruno, Chef de police [Bruno, Chef de police, Band 9 (Ungekürzt)]
Revanche [Bruno, Chef de police, Band 10, Der zehnte Fall für Bruno, Chef de police (Ungekürzt)]
Revanche - Der zehnte Fall für Bruno, Chef de police [Bruno, Chef de police, Band 10 (Ungekürzt)]
Menu surprise - Der elfte Fall für Bruno, Chef de police [Bruno, Chef de police, Band 11 (Ungekürzt)]
Menu surprise [Bruno, Chef de police, Band 11, Der elfte Fall für Bruno, Chef de police (Ungekürzt)]
Connaisseur - Der zwölfte Fall für Bruno, Chef de police [Bruno, Chef de police, Band 12 (Ungekürzt)]
Connaisseur [Bruno, Chef de police, Band 12, Der zwölfte Fall für Bruno, Chef de police (Ungekürzt)]
Französisches Roulette [Bruno, Chef de police, Band 13, Der dreizehnte Fall für Bruno, Chef de police (Ungekürzt)]
Tête-à-Tête [Bruno, Chef de police, Band 14, Der vierzehnte Fall für Bruno. Chef de police (Ungekürzt)]
Troubadour [Bruno, Chef de police, Band 15, Der fünfzehnte Fall für Bruno, Chef de police (Ungekürzt)]
Bruno, Chef de cuisine [und andere Geschichten aus dem Périgord (Ungekürzt)]
Im Château [Bruno, Chef de police, Band 16 (Ungekürzt)]
Kapitel 1 - Im Château - Bruno, Chef de police, Band 16
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1d8a2f345960610c70288f3305a1ea4ca15ced127b968c5bc815bf46cd2954. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEVU52496520.