The Stieber Twins are a duo from Heidelberg, Germany, consisting of the brothers Martin (Marshall Mar, a.k.a. Martin Jekyll) and Christian (Luxus Chris a.k.a. Christian Hyde). They are known as graffi
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 0xd1bd50934da214e30e68c527d3022461d5f7c449e5d8f7fef0e806d5bfc4b4b5. 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/022a9b5c-1626-44ac-8961-5bfddcfd6357.json and https://artists.proofprofile.net/proofs/artist/022a9b5c-1626-44ac-8961-5bfddcfd6357.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 0xf13f036718bcc14732753f40332011070eca0f6758648dc4ec7cc5c304a8ef85. 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/DEZC62421451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17de0eba159489241202e644105ec8d31c9d3c7803f2dfa8b526653b1f298be. 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/DEZC62421452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a16bdeb8e481f9b0d6680112b8d9eb56ddcc9dceb99fdfd1a359b1b9dd1b870. 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/DEZC62421453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2eeff9712ec909c1b20d720423b4bc600e72854332902dce3e94d2d7e12799. 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/DEZC62421454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75b912592664918e6a72bd52511870f6b4a0c8985964c4447779e5c580e7fc2. 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/DEZC62421455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ddf7762896d12f204f94e78e8660e7533dd106677d5e8a6ae48e5fdd8c32aa. 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/DEZC62421456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974f053a8fa2de2dd57dc999622bd8a582b99ee37cd2307adf8d9ebb69b6c1d5. 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/DEZC62421457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37968ba912203eb04ae46f97e615704e07273416c30b275be89c052e7ff8493d. 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/DEZC62421458.
Fenster zum Hof - Super Mario von Hacht Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797abfce5eae0ca47d1fccdf62d8a896d10b68cc448453d73372df6603351c40. 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/DEZC62421459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a6bf9a96a407a06d1f6d7b8107d6803b46b2d276e7177d88526d70bee2136a. 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/DEZC62421460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f4a95882c5460bfd43acaaa2a6eb23595a4b714a8124f8668cfc93c106eeb0. 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/DEZC62421461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf3dca4fcc15a86bcbb219508bda8bebc117fba47c12f6221de6cf8b0ffd6c4. 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/DEZC62421462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1d15935369cbb2e308ce78599e809754adc3f23de25547a497854bd9888385. 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/DEZC62421463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa15dde56d216142682783d22488dd48d5cad9f1b2f1db657759e8867b105e33. 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/DEZC62421464.
Allein zu zweit (MagMar Remix) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e16631d0b94a29fdf6956bd40775adbdbe605192d6b9dd5e0f4cfa10f8e8e1. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEZC62421465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b19576eac0a25a1e471d7c31838327418baaad3d9a24d2d7973b9e99ea710fb. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/DEZC62457897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edcabf8efd3d02102d8a1f7644e67a9b299ce6e3d97cbd75c432c4be310aebd. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:54Z), 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/DEZC62457898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d43cc19cd1f91e617d2c8bdb59659af43f5c48caf9f8dd2f05d967b70d8fd8. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:17:17Z), 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/DEZC62457899.
Malaria / Ohne Gewähr / Taler, Taler (Roey Marquis II. Remix)
Malaria / Ohne Gewähr / Taler Taler (Roey Marquis II. Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d6ba41668506246308d5ebe59538575d0388d27bd77d53ffe0ee359d3946ed. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DEZC62457874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29bc6309fc5e89a9b65c4113e6c9296a22e94fbe44846eda383126c0574980e. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:59:13Z), 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/DEZC62457875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd97eefb9245094d3e27cd362470bd9afa4bbe1df2f32446f6248c1cfa061aa. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEZC62457876.
Seance (feat. The Arsonists, Shabazz The Disciple & Stieber Twins) ( Remastered 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacdae4af4e5e8c61ec2aa80f7255668b6dca36bef1ad65903a290f1dd3cff4a. 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/DELV41501294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a484d3aeab0b662d013b27c51a51ae7f0fe1d1f98c4c677f62dfc88f507998f. 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/DEUM71801814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a484d3aeab0b662d013b27c51a51ae7f0fe1d1f98c4c677f62dfc88f507998f. 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/DEUM71801814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ab15eec448a12053621598458d0ecc67d7cf9cf8dfd9e904cd399f6a1ce3ae. 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/DEC680100656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74891a36b49d9125f82c7a1cd6b4f92bfd9b312b1cf18ad49f5798a87b436faa. 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/DEC680100661.
Ein Tag so schön wie Heute - Stieber twins mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4d17aefab2e613c9b3c123a713c21440af1728f19bc4a619c403e3defcff50. 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/DEQ021905675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2442a8fc678dab70c979f9c6a00c33bb8b9e7399038e83dbc876ebc9d89e26. 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/US3C60910077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56feb7f587caf12f64411c1965a5e9702f791ed2e2a350be5235b59ba241f1ec. 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/DETG92400050.
New York to Germany (The 20th Anniversary)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942c1ef11594f68e5bb8b3f0b04145ac0d22dd6bbdd0e14c1f775393a9ab8701. 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/DEQU31200009.
Ich lebe für Hip Hop - Teil2: Juice Crew Saga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf690f80b33e851994e6c8d7909540be60e23f0eb5f3275af513a431a4b5a61eb. 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/DEBL60359135.