Landau (), officially Landau in der Pfalz (, ), is an autonomous (kreisfrei) town surrounded by the Südliche Weinstraße ("Southern Wine Route") district of southern Rhineland-Palatinate, Germany. It i
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 0x192b2d51fcd614008960744d853d75e8018a873afa9d8fad2f4bc8a1f27f7533. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3e447bb-1de5-4f41-b09f-737ee0add956.json and https://artists.proofprofile.net/proofs/artist/c3e447bb-1de5-4f41-b09f-737ee0add956.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x6ad48119a1855732e639338611c9e0ddf7cc9e05f5ba92cc509db4daff1304c9. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/US7VG1705543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f22f42fdf8b02d75fdd5c7b7b2f17e4eb8aa75329329f57e16701ab6cc2a87. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US7VG1509081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667498f8db9c32405b057ff542252282b7da4a36b13c2e420750df77e15402e2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/US7VG1443293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60beb8ebd39edb5926530a3762012a9cd15ed30a1f592e2aae4d9185d71624ac. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/US7VG1443294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdca66df8e9cc0af0ca5263d2f2a5f50e8936a1e4394269fd428901b7bcb50e. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZ5AB1605269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1753ae330a45d4a165ecd84cce0f5c21026bae82fe20b49bcf357ed386331797. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZ5AB1605273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60012425287f8b1bbf07d9a6f8592b8b70c79a5d50279c9da8252101325058d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZ5AB1605274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256838333ae8bb50c697873d988a1618a32e414a1fad2e11ebd4c03b672323c5. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/US7VG1739257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dff01ff1094af13ed2cf92b3ebbaa66a37c8ac7cda5ca6876f30f1f0a8c619. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:53:59Z), 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/QZHZ41946267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc821d9c5b0074fd48baa31528311c14010421044dd6871a1e810650f9c613a2. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZNJY2047050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746042a6c4e90d7bb33bd3ea4c6a6836249287dba86835b2a6ddf7fa3f40047e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BRVF92200001.
Washington Del Buffalo (Born in Gaspar Lopez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37513aa2e05f5b444239e2db440ac8e87958f89d1c20bebecf034ad1beee2aa5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRVF92500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6882bfcca8fa117cc2400c294ce964da4c9f201d3c1e8f5a6dcc6c75af9013. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRVF92500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814768dae23602ef19e7b04e3a1d83cbbc00848988572678cfb327611bfc2074. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/BRVF92500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0e9953c38a1becc908768f772067ce704af6e66d6126fb16ff09acf4287f1a. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T20:54:02Z), 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/GBQDJ0900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b366bd767f0cc1126817ee727c08b50a7a624a7148c7361ac592d259020fc03. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BR8ND1400068.