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 0xdc9e94fb09618af84510628410f7537509d9b26e423bc0e4794f1dcd4ec2dd1b. 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/c468c07e-d8f1-4745-a938-e95626fac41b.json and https://artists.proofprofile.net/proofs/artist/c468c07e-d8f1-4745-a938-e95626fac41b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brandneue Witze genial erzählt - Witze zum Totlachen
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 0xc00defbace9cb0a73ea12f03c655ca999f0964c43b0e70005fdeecdab1ace3bb. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DELD91900506.
Richtig witzige Witze Genial Erzählt - Witze zum Totlachen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b4c75b603b2012bd744c963786f09d54326a61c28905e2652554051587c8c2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DELD92000694.
Witze brandaktuell zum Totlachen: Männerwitze, Frauenwitze, Kurzwitze zum Schieflachen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985483f6fafab51cd1f18ae5e801fc66aba080027cde56b2eee9331d9a6ba4c1. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELD92400068.
Drei witzige Fragen: Friseur, BH, Frauenfußball
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d61cbcd93e6928c3b5177222cbfc8be8dbea0b4b9c2dcc5e2afb31db22883a. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DELD92400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c291996ce17fb5f082b4bacbeb198d228fc75b212bd76729d792edc03a56c16. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/DELD92400070.
Witze Kanonade: Kurzwitze zum Schieflachen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64777b57e2214857556bd0b8ae2e12d1a264df8ecd2af35a8626b0b329f0b346. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DELD92400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baf1a494f6ea7ce4e8885fcdcc3c7b128d578bed2890b45c1d3809c0762e9a7. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELD92400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09108d69def5e9a2de2a8aa559a8a595cdc48af5792b48737fd72efb6961cc6. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/DELD92400073.
Witz vom Heissluftballon und dem Mathematiker?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa405fa4c11ad8b19f55267caf330911f819e56a92a879a15bf2cd280132f03. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DELD92400074.
Kurzwitze: Frauenwitze, Männerwitze, etc. pp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4696e102e2a1baba87e1dac44b7b2519318b2e2229d6ac1cf09f28c31582ccd. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/DELD92400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efb1b44ae068857f7724fd1186e93acf6027bcd36bd11b36d8e7282a0c8ad05. 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/DELD92400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961fb2eacdfba1a72e78e078e84ae3e6305cd8345e502eda32e402b5cf4f2154. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELD92400077.
Witz von der Mutter und ihren heiratenden Töchtern
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac53c165e96888483c5915c89546c6fc1c297255ee4305104abec3326ce0b550. 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/DELD92400078.
Witze Beben zum Totlachen: Über Männer und Frauen und andere komische Sachen zum Schieflachen
Witze aus dem Leben, Essen und falsche Wahrheiten zum Totlachen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06383eb58b1f374ff4a92eef6d3e50bbd5a2c1a1e12d9e954405e1b5284afe2. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DELD92400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa202262ba6f5645924192e7b88df17ab19a4de918f8b72730f947891906b6922. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/DELD92400209.
Männerwitze über Ärger in und aus der Kneipe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f688ddc1c04c75b9af20fd36a61f0652ec13af492788822c0e69ba7cd78d0a. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/DELD92400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebd303587a2e96134f1e31ed34f0e5c3fb137cef1491b8b4302e790d041a98d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DELD92400211.
Witz vom Mann und den drei Frauen zum Heiraten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa36c5f13613bb893a5a7d8d43dfd617ffafa799d1c276024e0732e1b26b596. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DELD92400212.
Zwei Witze: Nordfriesland und der Cocktail
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2bf55f749ef15af639134554631647741aa2d975fc3376c27576b5ba1dd21c. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/DELD92400213.
Vier Witze aus der Bar für richtige Männer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fd837937303d5b4357a37be81b4b4be694e2bafc02bfe34b139e042eebea53. 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/DELD92400214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbc3004da07531340a64b89173cd5cac4b61009a79e4635974aa35dd9ca80e5. 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/DELD92400215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c80bee196790d397f5ca78a1c11a6df952cc1311533ea64b99c2d721b95b19. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DELD92400216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8c655ae0cccd3a00d2f78bb24b1f6b3d4a40e95b370bf5ffe1bb04aa670219. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/DELD92400217.
Witz: Der Mann trifft die schönste Frau im Restaurant
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bbe29e09717163b77a945c60d450f9cc3e85911ead7345be54f0ae48a4d9ad. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/DELD92400218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba63c6f39edd42959df5040c659f1df10a346fa9c51f201991b9a19c7717d4d1. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/DELD92400219.
Witz vom Stotterer beim Arzt - Top witzig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c84f0e1a3d150172e3d17a04c66cf4043d942878d525a4537bbf20da0178192. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DELD92400220.
Zwei Witze vom Löwen, dem Baum und der schönen Frau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2d6e485bb7e38278d93aabe26c8b30a263da28adc45c01c35f56a31d598ea3. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/DELD92400221.
Der Freibad Witz: Turmspringangebermeisterschaft
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff9b7807d5de9860d1f2a2136eb9430b851849e996d69d56adafd741750b056. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELD92400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1ee39b67438f2286471a7325afad07d998d1b4648fea63da863d9e52d3d7ef. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DELD92400223.
Witz vom Bauern und dem Traktorverkäufer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa17634b4f456c1c41d802838d046e833fe7e6d4761cc7bfd42a36ff253a166f. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/DELD92400224.
Witz: Bodo will nach Hause aus der Kneipe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdd93870f9d9c03f8935309dd5d71e7df416be2f0fc9acdfa6d94c0fdd14267. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DELD92400225.