Elke Heidenreich (née Riegert; born 15 February 1943) is a German author, TV presenter, literary critic and journalist. She has written audio plays, a magazine column, scripts for television plays and
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 0x1706f0235da3cc44ecc3587e5afa2c24acb2a9b86c57d4e8474e7b6675505346. 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/e4e739e3-f324-4706-a246-0a54f6a88104.json and https://artists.proofprofile.net/proofs/artist/e4e739e3-f324-4706-a246-0a54f6a88104.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 0xc8d73d5b7872dbb5c94e5aa2d260eb185f8599f2bebfdcd9448053d43e78fd08. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DEB111402513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35de7deace992c9f5d1c72b073fe21f338335d598e6432c72d724f0def3b135f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEC162400790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43f01a4f113a029d8261460e6481b60c392abcfc56e0df161d7734ee415d2ba. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEC162400792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165ce893fc5b9c814db24f4c05e92e78e14d0a45a70f5da1011e6578a4b0dd63. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEC162400793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430473ebf217fe61fe647e0b562d24a88f1a54523ac23168a15cd613bee223e0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEC162400796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0bf2c6b717a4cf6812fd51bf462fea2503175ecc3a868109b84bb500f8c33a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEC162400797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61278fa11fc160b4b2ba5726bd592d0ed823f0d0874b53f63919ba4418c78a1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEC162400798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc5c0b8d148e8823bcbf663e359c6e0fc10f6efb21ed64f1daa623a97d5be6a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEC162400799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5663a5b38200d11ada9711372a2370cdc6ad61cf719c99aa3288c94465b6d5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEC162400800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb832f06a0d802cd18e59a9206b75c35073de50c353f421f5bb2f4d2178cf179e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEC162400801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe809bda4f6402ed9ec8e8e32b5e82bc5b5a74aa08de0611755a6e8785bf2bee0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEC162400802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b4521947ba994891e5a4ffe6ad46a2b5b72d18ecc6887e2352e82a248e568e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEC162400803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf466318f159e310bc7d65a5376961c4f968ffc108646231d213523993e618c5. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEC162400804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e7ea3b45d8018524ceb2daedd36321ecb2cd494acfbf872d055d9868e73f34. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEC162400805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8c87deb2d2447cfde4eb0108a4abeb41a8c9adc5ff0fc2ddc95e8b51479004. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEC162400806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd34c2baa8705eb89a298847eb2b94e2dcfbbfddd0832045f54aa2e577fbf4e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEC162400807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360a638747ce403e911a43e690e78af50650781211b7d5e7e14a1ae2bfd20146. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEC162400808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0856cfb579227eb1d3c091ff8a63de3a8d99190d21d34d2b7df9b8cfa46dc86a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEC162400809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6959043d27f5cc6b670292ea1b8c535a43e9bbb79295a41bc8eb52016fc2da59. 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/DEC162400810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d959b49e674b4707870c15627d89654c05c515719ea520a3b2197bef1c3c299. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEC162400811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34be5372b45e3219bd0bb5a8d2a022ffb6df7d6215e25ab473f92c2b87d2dc1f. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DEC162400812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c5dd410335b35574bb93c671ebc30efe56563bd31dd3167e95103a8ceb25e6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEC162400813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75ca808cb05a5a03a6b641e86d864bc69d471d163416b65efa1a1bb353d8320. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DEC162400814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17c63393f2e9114af8e72ef7c0d4e883eda60ed83a76481f48e1d5d11642316. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEC162400815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213089ba60f9f3111920aa146e6745ca54356f24a01deab70dbeffe1bad1a789. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DEC162400816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44635eb6a8a6b6d395b0d05805c2d46dde86e2d0afb2b89a7063b507e580d00. 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/DEC162400817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1f03b79a7f5af92b350f61b5ebddc3cb3b2292e3aa0e8feda6ac4f25fac361. 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/DEC162400818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1f15920f975384a8e476ffe671405268b0b545d2b718599feb6c96adb110e9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEC162400819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dc3c0d36b7fc401cf7d04272a0a78f0dd8c31a80e28370f6bef1ad2a4b96f6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEC162400820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036e570dfa27dd14bddb603004b3b790066b6cc2b44afdce3c9b837887a989b1. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DEC162400821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3872ce6ded811540a12878013156e13ea32cfcc4006932a833d5ad10ccb698a7. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/DEC162400822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81175080f9e7815e40084251ec7705bd44659f26e41e2c23e99b3413db444c8f. 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/DEC162400823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48696ef711f59ecfea811e7a7162f021c661eb90c5329c824aa160d29ca441b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEC162400824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c6543ddcde17e529923c9def5b4c5a44305038f0cd5dfa4126bc4a61f42371. 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/DEC162400825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a2e13d92e534e9d0564618e9b46f440f010dfab950b4cac8f796c330fdabac. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEC162400826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36730feac3ec272f6180cfaaa5628997941bf4831c052e20ad1ef5961942a41b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEC162400827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd8569d538bac0bd4a36f7c322675eab718388430bb54055d901c8cb1290b8c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DEC162400828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe4c323b3ece2d5bc586f34ff01b22d11e753c874e1a066dfb852052cd675f5. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEC162400829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a4e7fc078b29eb8b789138e9de1cb460598e797f0d6becd9b49e412945c6db. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEC162400830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a411b56702672fc9d1e7e8277351f338f61b8af60edb798acf1c906be53b7c0. 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/DEC162400831.