Kummer is a German surname. Notable people with the surname include: Bernhard Kummer (1897–1962), German Germanist Clare Kummer (1873–1958), American composer, lyricist and playwright Clarence Kummer
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 0x8a867609b296649b7d9c07291255120dd1a565f887a6771d6605e5711f4005ff. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37f99d94-cd35-4cf7-b1c4-9255430de080.json and https://artists.proofprofile.net/proofs/artist/37f99d94-cd35-4cf7-b1c4-9255430de080.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 0x51bab3ebea919eccdc0bc9cf242811d07aece4dc64820a3be2992120ac5cbc6a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DECE72201087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a41e869693988476ec62532c093ee6444a18f55b59fdf9c152d5c5a0c71669. 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/DECE72200895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf38f2dbb00810c3c00be9366e7d10c6d9cc47ace1fac72bb22d2f3ab01811d. 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/DERK42000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a5d476ba131b58122daea2cb4fa9785ee51558dea458429cfc38670293fdb4. 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/DECE71900340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c0f3a68eab328616070ff5685e2244de85751ab86955ec47ff93a01f80fcc6. 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/DECE71900322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0699d4c663d3fd9d451c9245a1a4ba0134cea588d3279ea0b74987a5e9b5006. 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/DECE71900341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6e5f7fa1a35056713e8b0f087965ddb3c51e7c90e83d47ee76baf356e26710. 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/DECE71900342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c39a79416ed41dae40c9f2b97db8330512ed12973502e57cdd3da32460ff815. 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/DECE71900343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983f2b29dd59bbe8b4361ceecfd2141b04f95e6b6bbcac76276946185394d851. 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/DECE71900344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07c03f8031ac59cd98de188381ceb21e9cd847fe68e0678d45ae28af540498b. 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/DECE71900345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf90dcca4f5dc5394da991576debe5bb0514c27e2e9db4292f03d12252cc03b. 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/DECE71900346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d45148ef4d55c7be8222ca8174a336828406d6c6add728e252b5f94de5796c. 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/DECE71900347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1f1c8943e9d8828dfc341a0502d39eebac9a09af1f72c6ad57aae68ed2c05c. 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/DECE71900348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86cae73fab4dfbb04bcb0ef6608d7f283705fac923d62403dcc5b9883f2acc7. 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/DECE71900349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e1c61197604214493930623f93f89d3c57f7b95fe8179b0a060659642ff6b4. 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/DECE71900350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd508f2249c9dd8f1a2e18570bce5df68d12704cbb1e767064e6b0d047f996f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DECE72301553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d89be71c0f19ae0668f9918669833aa2437f39684b3f47c5492698b1dad6e0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DECE72301554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf5af82d622b93696f0bd6aa797e0bc1f837db9f4dceb808f2a99f34c20c3b0. 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/DECE72301555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4461dbef80427df5ad6759828440323c04b612b95079eacf9263201994da93. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DECE72301556.
Nicht die Musik - Live aus der Wuhlheide
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3d4c38d266f888e1b41c071c2b03a69ae1df25ba487b1ab9c9c52dcc73fcca. 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/DECE72301557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0120d97a08334c0edb13726d0e06b4cd6732a90ff1f69934329aa79bf603afde. 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/DECE72301558.
DER LETZTE SONG (ALLES WIRD GUT) - Live aus der Wuhlheide
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c7c31c6aed47c1fb929cf0a33ab4eb2313b5704f9859b82b4e0b67cddfd0fc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DECE72301559.