Hannes Grossmann (born 8 September 1982) is a German drummer who plays for the German progressive band Alkaloid. He was also the drummer during Necrophagist's Epitaph era and played with Obscura. Bio
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 0x0954ce433e18120f7953ae41f9247a70e93f9861ad70a5915a499052a5ad2444. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/125f3670-0ef0-40d7-8b1d-7d6bbe4bfee0.json and https://artists.proofprofile.net/proofs/artist/125f3670-0ef0-40d7-8b1d-7d6bbe4bfee0.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 0x5f0a41cd380e0992ec080e864a0fe9eaae8d87aac4337e60dfa3212acaa4175f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES82116865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e845293c3ff467f7308f6c122c47211338e57dcc218a735bd4813fef34297b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES82116867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922fc1c5e88013511efe02b0bc567ff870fa4ef191abb3b8f867525e9c532d7c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES82116868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b0ae2818e87b0d31d62fd395a412f290155a1bd67143dbcac5dc466cd4b97b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES82116869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540bb8df15d94b9dff7fe256ff3e9ac0393e07ef0a22e8936d3fed239b707753. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMEU31902449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8a6b740ff037fb2be6611f3656d6bb4690cc84ed70acf0fe95613d13d9ae39. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMEU31902450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb546cc6c3f07823bfc6a05581e6188f5c578363ffd60068fccf32b3b652bc20f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMEU31902451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4337b3b411219776232a3f1b92dae9d35d7b21a04c7f6ada5e0e41e659659436. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMEU31902452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8af5f8f4151ea4e105e99368f2211681ce1d04d1714314f861180a4860371e. 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/USHM21685348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c033ced6c2c264f21a11651eb38b3448c5d46348b7ca05ba7db834fdd5307c6. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USHM21685349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c8ff5c0d7a53419c046e4354fcaa806b70f6d65165d930c96078f57e04d2d9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USHM21685353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b64d5acd847bb223db5056cb736e1b6cff3121e0efee048a3f510b9286d1e2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM21685356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf623d635d8b2d4b8c9b2880101e233656c934c035d3d04bfd53da2d162ac2404. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:41:30Z), 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/USCGH1476200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39300c5c3ac224085d00438bf836b477fd2051a1e4f29fb92ad86ebc121587be. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGH1476201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3bc36c5a94a6346f8fd3cee145993c366c80a4767423a299aad7cb1278c155. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/USCGH1476204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f58f77c0f854a2363924dfeaf72bfe8868eb7d763d8401851dbb502e4f31f3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USCGH1476206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5e191c22b09e9e31744b48f53fcf6a7e513cf11bdc022d5ee641178dab2eb8. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZWFJ2307001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e987b2760fc3807881c433159bbcd18f4a2dafc9bfee50113e41b918bc01566. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZWFL2303621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5e191c22b09e9e31744b48f53fcf6a7e513cf11bdc022d5ee641178dab2eb8. 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/QZWFJ2307001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dee464e60a53ad5f2ff00c9003dc7ef19131c8e70a0028288c36e64a76f2a7. 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/DEMV91603255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0506c0875ee7a5adf5fa0e96c564dd7d9f736eef21619b28de3052c68c42a0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEMV91603257.
ORBI: The Oscillating Revenge of the Background Instruments
Hey You (Arr. M. van Prooijen for Chamber Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce36eb2fc09a49c875c0b835c5ec5dff626b1a6c88a789a9e4b85d2b8627025d. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/SEAEX1897050.
Supermassive Black Hole (Arr. M. van Prooijen for Chamber Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0d02f1c23e9acd165ac9414055ae6cad01c26ea9f58aaa4317d98990390ff7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEAEX1897100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef774f75a7744c5c6358d16636c4e1e6d7ed407d1140e6095133153b4dd8757. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGH2324159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f39694be4f52c4bf279d9c626a84c4a111075fae8d13417e5783a6f4c40568f. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/TCAGO2210230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91d48f9d55c1902d13684b84a5cb862d1009e283f1737fccd58e6d0e1a86c2f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAHB2319929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8fa507ea16f42f5c0b2f58cfd8fd33f6caaad31c333330917170947f09a49f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAHB2319946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94358297de5103e92f8cd3565f424364811b4e671f889bae5b64a17a4c0977a7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES62403173.