Andrea von Kampen is an American folk singer-songwriter. Biography Andrea von Kampen was born in Ann Arbor, Michigan, the daughter of Dory von Kampen, an English teacher, and Dr. Kurt von Kampen, a m
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 0x704db9d841a8e1220a358f3b865e109f3446e97180e860f16dd0dde3601ef797. 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/207c3c36-ba06-4fd8-8053-6fc714fe1189.json and https://artists.proofprofile.net/proofs/artist/207c3c36-ba06-4fd8-8053-6fc714fe1189.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 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 0xc74f6c30000122059489b31ee64aaa0b458381064cf17d5956076657df330d16. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAHP2369449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cc8d8125f6ed0806b05f42fcdde9170f13cafb2528334c79a1e43b95fbd957. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USC4R2108114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4110f1c52e821cb0a7545b9808216e522b276d1f9af897b61c658152469ade8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USC4R2108115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde229ebc74ae64c314ad5e41ff3be76fae312a1b50ad2d6d297bf120491282a9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USC4R2108118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1783dc5ba5ad80cb326593beaba67c2069ce3d070ec07059895436d21dabdc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USC4R2108121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c72f0d93389f8f5bf78e798a20ffde20888de723e8b3119a311b5de5bf33981. 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/USC4R2108122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967700c56935eb7813b83aafed2ea05c97ac59b885770cfd2554b4e82f431dc5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAEB1905501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880e7e717dd74250f4fc590454b3f915a70a1c3f47426539276eeb0018254292. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAEB1905518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d98b3508d5a6ddd3da384c23c315d99b6807dc05cfbc1da920697b70f79d4ad. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM99V1705505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74f6c30000122059489b31ee64aaa0b458381064cf17d5956076657df330d16. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAHP2369449.
Take Back Thy Gift (Live at ARC Studios / 2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2c4c39d3ef233cc490449dba87f5fe2e9e16a8e237f45c52e8fd9ddc1286a5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USC4R2110847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa04d5eb3534e5bb1adde5773adc109aa0f87c83fc59bdcaa693e26817f4efff. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFE2068274.
Hard Times Come Again No More (From the Original Motion Picture "Molto Bella")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0124e23f5f263dab781faf35b172f2c7bdf485d105e9a21df3cb5024be37dd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UK6KW2000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95e87569e0ce60aa39d584b4eb947600189ffe57a47ec0da21f61b42f0f28d6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6Q1957029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a05ab7f5217023dbcfcc3f2174128794f7abb93e5e9d5f9ba437aa9663cf0ad. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USDHM1726281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6d13f2a8530954405ed49aca78c45deec7017954871371d00b450aabdddfa5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDHM1630080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a550d97240ca1b5d8ab07cc9c6185786dc4f466f4c7baa0440253a3c2cf748. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USDHM1630082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c03f962a60277dc951e288619229b3d65c6c2eee7d0424500879bb2b62a9943. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USDHM1522578.