The Kruger Brothers is a trio of musicians who play bluegrass and new American folk music.About the Kruger Brothers The trio consists of Jens Kruger (banjo, harmony vocals), Uwe Kruger (guitar, lead a
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 0x4ce34bb9cae16beaff5ba5f4e939b8f916308cdee6c3c26336e6bd8e7ed61482. 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/8fe37ff2-6647-4bc1-866e-b398bd7099ea.json and https://artists.proofprofile.net/proofs/artist/8fe37ff2-6647-4bc1-866e-b398bd7099ea.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 0x47370a743c2f9cbe2532b07b121ea3319b32056df53f346ba97dab7498eb1aa9. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:32:58Z), 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/TCABA1159414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff1b8aa8b8fcc13199c72162c47f32c73cf9ff13ee45f91f5965e5eab0e7660. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCABA1159416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178e94925881d860f9950c14ce814dc1ab4ff2d8e146da53e29a1f1fe6f46298. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCABA1159418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b08ecd62bc90951c42369d244318d068565ab8657c3454e9bee964018753ee0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCABA1159420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087ede72dacf7041200630210362bba08b85dd50e301de71ef540bca419cf231. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:36:27Z), 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/TCABA1159423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6e8bd7c41a0ba175dd3feb73fa820d4e93172c2610ed607c0465f63e7c96df. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/TCABA1159427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f60ebca7075a9c3cd15d72ba823f9b5ea7c13737b517d62a78f238fd65e5c2. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCABA1159687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7184eef0c2295be584e97584259ac0e440fac1635b436cf439614292b820cbcc. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCABA1159707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe31729de03786d0fcda638f7b1e616ca5cfb7fc8c2ce39e4f12fecc5968be3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:36Z), 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/TCABA1159639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d4c14e3ea8236c71648b49e132d2b60fccb5700dbc222f5d5a41e7b1aec664. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:21:59Z), 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/TCABA1159642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83534ddea48edced5090073803ff4b380bdad52dd191eaaf1ffe12c18eb1d4f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:03Z), 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/TCABA1159645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e88cdaa15509d28fd8bdab56b7472e4fe50fa468b3c7bf706583ef370cb76c0. 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/USTCF1038604.
Christmas Magic With the Kruger Brothers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8969ca33efb627df65b43cb0f6aef50d1c89d30c749149425eb37845a05110. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:00:25Z), 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/TCABF1246548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51ffc3aa7c66125628425f4e13acf0a3933e70a301c95fd512a118f34036d71. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCABF1246550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8ce9b71842cfadbf30ebde9291948cc3815045fa314830bf450d8e24912f63. 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/TCABF1246811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb328a1648808d60befde7f5eacf94749dd9fcdf58a43f8e6d0337e6ef0fb007. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCACG1531340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1389e2b077c028be53714f1d902b1d52578aa9e90a61ce9c2709f8a27bf4bb37. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCADA1792931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001799e33bdc89323c9463336fcfee8b9fdff46110354d4642f9560ecb5a2324. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCADA1792934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a4702cdeda3f87b264c589d9fda54e73ad443bde4dc8dfd03f4468ca476993. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCADA1792935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcccffcb8ee8795d1d47c362f55d61022eb6682ed94ede3f4928d424eceb3a30. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCADA1792937.
Immer em Härze nah / Ländler Swing / Erinnerungen an Zirkus Renz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a56c7addf34298e988e7885ae7c377a7b7b09b8431f3d2176b7dbcaf0d6a0ff. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH0321800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce79ce53968788868af3aaaa73396517fde146dd6869b5e0fc0de13f5ac2ff2. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/CH0321800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb87e5ea14b750b9c59c1f46f5d3e84eceaa06375ea2e920ffbf79f58ba60dbf. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/CH0321800103.
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 0xc0e9f9a71db2faf70dd06a1f7f4701c666cf28ef18a5e78b2a2970142bc0626d. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/CH0321800104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1649733b3d226191e0db726c1368fa1caefa68064776af0061c8f032656ec9aa. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM4TX2030757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9830e5583c98a0da17b37f41de516c4a7419f990e94bbf01870d6888c4640a70. 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/USVU52300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59b71cf3c8656691bc80fdd4a788e7f6354362563bbdcd9ed87c4bc2c42cba2. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USVU52300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d025069eb421d1eff5cbcffe093d96ffa0f1146d2c400dc3beee942eedb3c34. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:09:54Z), 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/USVU52300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65daa90a22dc8d72decb992d2049694cdd6b873d7a76a41bd7eb5e1db8fb9914. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USVU52300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6aea836ea4db4ca740560b392e6ea528752587659a1c334fcf7975b00cbed4. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:41:53Z), 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/USVU52300008.
Big Bend Killing: The Appalachian Ballad Tradition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d71c77c73cfed22f6bafe88c10eb254f9ac89869762225e6abacfd965a830f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM91779274.