Elefant (German for "elephant") was a heavy tank destroyer (self-propelled anti-tank gun) used by German Panzerjäger (anti-tank) units during World War II. Ninety-one units were built in 1943 under th
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 0x419e9aa519839c96a23fd025ffb71890c6f4535789f81541f3dca2b1c6b35b6d. 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/f8fecda2-50e1-458f-bb16-a969a3e94da2.json and https://artists.proofprofile.net/proofs/artist/f8fecda2-50e1-458f-bb16-a969a3e94da2.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 0xb4cc01ec30868a8343c5917475c360a07f9a75589f8d491d9e8e99ca52843a65. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USKDO0300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18adf6c5cc87f7ce14b5f47497340c0fc3ab866bc38f36f2e0d754db324e6749. 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/USKDO0300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319e2b086837e8fb280990528481e00fc4fb2256bab293dec0709848cbe3ac6d. 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/USKDO0300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89988674adf7110ea3282c50ff9263c3a1822d0e4f9b58e653a3f1a5b35aee59. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/USKDO0500077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2a534faff9f066d6906e9068fac4fdc1f5825ebfb8028df72a932d462cfdd4. 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/USKDO0500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d83231f42563c72fa8a49ee97c4a8dfe4edf5ac7f4d21133fc92d3802e87532. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USKDO0500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d1b2d161e698be04586f5bbc8fa7603009a5780e50354c80410f9ad7d4035a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:00:31Z), 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/USKDO0500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4526a7fb0a015c85517f8c172efa5a04e0c4a821034e57911fa5157f16c11da. 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/USKDO0500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d78c680070131e0be55538a448ffa4fb80def64a9e6e8e6e2a4550c12214084. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/USKDO0500086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab5ae6824c32f6f3644cb12ce5516037b862e259e9bb1fed87e1c35feb67d82. 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/USKDO0500087.