Panzerballett is a quintet from Munich led by guitarist, composer and arranger Jan Zehrfeld. Their musical style is best described as jazz-metal. Band history After several years of searching, classi
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 0x29e28f380ebf8f1f55fa1c48b7a439b503c9854f84b8f89a389e378026eee97f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2626d974-f25b-4b1f-9e34-77386e05c1ab.json and https://artists.proofprofile.net/proofs/artist/2626d974-f25b-4b1f-9e34-77386e05c1ab.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 0x6896759d3ecdcb2e4a420ea1ac4d38a7f36d8923f5a6e2603441a114fbb4e501. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:03:52Z), 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/DEA890800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63a4f9512dd0e56d8fd00b370daec7bdfa631bed81687f0f5a30823413fafb9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DENC11200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6058617080c173ccb4e2ccbd5c36c846e72a4c5bd64b2bf37f6d7d397ef82e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DENC11200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c07f318aa226a83cb64fa59436527d52124ac36bb72bc933d2802505896d12. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:03:55Z), 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/DENC11200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024d25f7b519e1e8623006d5eaafd66bf6af348c67006e4fd927efa7b176f77d. 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/DENC11500238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb261aeb7f537073e8ff8c42889ed6b8332d5839651af93ac36dc2d3074732229. 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/DENC11500240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb562dca767e5bc2f9acd8a5ff4f691dc4da2ad6babbbe62cc29743b23379d96e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DENC12000701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62035d5e6e6b850d907662ae5f4571c7d8b62089d73bccbec8450ce1fae8f2de. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:35Z), 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/DENC12000702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386bc01b5f5e3e25ee48a9d6f9a4df152eefdd6cfb77013c4df771b9fdc700c2. 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/DENC12000704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a8bafdf4ad640df76d512507bd11eee6f85e200edd88870e2f770cc0a81393. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DENC12000705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd82382d11503db5f4ad264d9adb896338c250e6222eefd839e03ed27624837e. 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/DENC12000706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff05bf6248410a6cf18cddf0eb106942e934a44f230755334dae445697a1a7e. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/DENC12000708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f45c006d0d5e58177535381b4a8cb62ec805f15207486443cfffab87a3ce1e. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/FR2X42518409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88015b19e5825c4911c915bbf5bbc1a2af90fe34509b0eaa2f9b197968564c16. 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/QMGC82500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f45c006d0d5e58177535381b4a8cb62ec805f15207486443cfffab87a3ce1e. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/FR2X42518409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88015b19e5825c4911c915bbf5bbc1a2af90fe34509b0eaa2f9b197968564c16. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QMGC82500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab8c75629243917555eab3011521b56d661125d38faa8252b4cebaa3fb70f0f. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/FR2X42518407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7a1f89d78bd8a9bcb47cb3b3752852553976baf013efa14d41dddd2f330bca. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR2X42518408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f45c006d0d5e58177535381b4a8cb62ec805f15207486443cfffab87a3ce1e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR2X42518409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4810f32179bfb6618c13ef57693857bc97346d0333d1529a4779539b4d21b3dc. 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/FR2X42518410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3640622b48a7bd24917c8dd7a8d8bb45f2a6287a7bd64ce22d76b293f6bdbff. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR2X42518411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf752fd5a74901db20f6d0d70fe00e402c0331bbf028267af4993ec3f156a5df6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR2X42518412.