Harakiri for the Sky is an Austrian post-black-metal band formed in Salzburg and Vienna in 2011 by vocalist JJ (Michael "V. Wahntraum" Kogler) and multi-instrumentalist Matthias Sollak, formerly of bl
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 0xb7a569a6ad4dadbb37590799331cbc7449041162573c7ea7b700967e057cd002. 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/59df7767-d0f0-4a05-b0f9-e023f4bbaa1d.json and https://artists.proofprofile.net/proofs/artist/59df7767-d0f0-4a05-b0f9-e023f4bbaa1d.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 0x916e2ede1982b0ba1b2d4d3fad6f67f89297e698e194a673af0f23ffa9ae4334. 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/QMEU31507084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0785a3c53420202f5770e71acbbee4e3f514110b3f79d64ec0c83efe001bf18d. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:02:35Z), 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/QMEU31507085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e889ab8666c0977d6fe121d62e1c01b58e01b2bba2ff238bd66a739cd02641. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:49:18Z), 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/QMEU31507086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8230f2e189770dbf2dc902bb2ab4ec00a71de9eb244408a4afcb9244423b618d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMEU31507087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d65240c2433dfedd90fc6888dc5b860bc2888c1d5e027d1624ba07668044967. 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/QMEU31507088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1246732e81081f7b7a3582aec7d04f7c2516e6e2448144f5eade0442b417c8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:48:12Z), 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/DEPI81503112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9edae46ba1b81d5abcc92d9a43c41232ca44a43ea2e33eb75f56400d6b45212. 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/DEPI81503113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acc6f4f2e2505461196eade1b1fc6ad5ce485b039b470315f9a3d54d953d037. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEPI81503114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a6871fa81cf113511b7202abe97e5de9717f3ef916192af8f56a0ce1b968df. 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/DEPI81503115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dddde947c14fa4a545c7c0298996e69de3d8c4bfbc1c2761849520029227a17. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:53:02Z), 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/DEPI81503116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3659904563bfe9a2e795034370a51a9f3c09d27fd4cafc337feee79262a252. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:06:53Z), 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/DEPI81503117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2071f78bd773f0e29b6393c667ea3daaa33bd4f9955e6cb81d55582dfb21878a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEPI81503118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85618746ea4ac832afd54b2c666b1f1553a2cc338b431265686abbfd0eef8df0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEPI81503119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878da72827fa78e2acd71f75a6e391f9575fc97833dcb626e4ebbe76dae939f3. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/DEPI81600057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92d90b206d572d480a0ae7866bc593f153dc589fc6e26940e03792a2f1b5be0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEPI81600059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9905c1fbf315e2b3334ac7ad9fd9307e4173d392ac79a5ca80c821b86abfc3. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/DEPI81701846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc803f6cf15cfb361ccb0853befbd9328c5c7fa18c126d7b59c7d3492c002257b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:37:37Z), 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/DEPI82020426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5a126c45df517a568ac53cfaf083371a689cbb485cf3e464ad88329bec7c7e. 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/DEPI82020427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790fdda25baec684df9bdf36e3a0960e35c8bd18caf6a1fb54bca711105d831b. 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/DEPI82020432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d8ad89515f119c59f8c027d69b41126914cc1390083339d9d2bdde692f339c. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/DEPI82020429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2c02ab9ba39e36f33452326dcee59ad954795497da919940e35d163a1c3f0e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEPI82020435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca37b42a956363b382ad9f60b04a75de3894d0f80799f1c9d0f090e3408ac71. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEPI82217297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c7b588120cce6a9585e2b455b86ba56b345e7b9875c2a13b19d54ad3ab3a1f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEPI82217298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a0153453715348605277a7c3011114b6edecb6ca26652fd5eb27fd03b6136c. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/DEPI82217300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbfe49b7b508fff48041374baadf9635eb96b768f301c49677e6e1997968523. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/DEPI82217301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce55490ec957c72d2047f2c0871851ceb7c5c0071791e3cc42a85b6e38192a13. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:29:23Z), 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/DEPI82217302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8958097967b1020c94e5150528794ae71b7fe17f1da2356f399899b6f93144. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEPI82217289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e3728c111e60b26358c38af993c95cc609a432e4b5e151686815f784363714. 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/DEPI82217291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7793a96121bc1952738e1bd7d2f7dcd03e8cce46d6e97a9b8cefb881c6a197. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/DEPI82217292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc560d2675fb1ebd6e470c6cae4c94dec2c4e59fb27b6148c73c788153ef9f7. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:25:48Z), 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/DEPI82217293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2edd2e08c62b0617be8aa9d57b9ed01fd5fa7a271bfe86a9057939d2172a8d7. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/DEPI82440108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1aa88ca78d85dd76dc91310f9bd02c5a716f2c3e75b75c3d0fc270fe80d4ee. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/DEPI82440104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2edd2e08c62b0617be8aa9d57b9ed01fd5fa7a271bfe86a9057939d2172a8d7. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:37:20Z), 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/DEPI82440108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef81b51fb5cbad34dcc58fa11526251b155ae6f0cb15f135ca75b8f78344a4b. 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/DEPI82440111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2edd2e08c62b0617be8aa9d57b9ed01fd5fa7a271bfe86a9057939d2172a8d7. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/DEPI82440108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5352a02f1279f7cb8a3fc6a6e791eee27c6be7b0af73fbf0c63d4d2a05218e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEZ902000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40419354a9ab33e913e53509d5112b8d8194903a80f14324532f17a306cf38d. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEPI81503106.
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 0x4b6ff55286dbfe7c2f6fc07433cc3844b20dc84309193c35839c184e9318b683. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEPI81800440.