Helmut Wolf was an Italian para-alpine skier. He represented Italy at the 1992 Winter Paralympics, at the 1994 Winter Paralympics and at the 1998 Winter Paralympics. In 1994, he won the silver medals
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 0x8f1da0bbdc4cf71e13bbad553dcaa3c8d82214decf7ec3b95469a5cbfd794cbf. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8839edd5-05bf-4947-8cd4-bf9b064d49c8.json and https://artists.proofprofile.net/proofs/artist/8839edd5-05bf-4947-8cd4-bf9b064d49c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stabat Mater Op. 138: I. Stabat mater dolorosa
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 0xd6b26ddc7c50d503a6e674ab7353d77b0b77770ad2fbb8bb524d35b2aacc8922. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEAD62148510.
Stabat Mater Op. 138: II. Quis est homo, qui non fleret
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c9d98efdbfc9130f1c72a038919ed19f5c977060c93c622be33b6039abe55e. 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/DEAD62148511.
Stabat Mater Op. 138: III. Eja mater, fons amoris!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e5ea846d1c5a234fd8d661811731bfcdd8a64702da692023f7b3cf7342b721. 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/DEAD62148512.
Stabat Mater Op. 138: IV. Virgo virginum praeclara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6894be6d589779f7c87ae1add060249d4f26f9a8663579cfbbea9306f57f8766. 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/DEAD62148513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704664c1b88d18e88354ba385e66e2d1485d3fb5ae9146e268f3e01731218cf2. 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/DEAD62148514.
Mass in D for soloists, chorus, orchestra and organ: Kyrie
Württembergische Philharmonie Reutlingen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88867f697bd14cbfce6ea477e03b79df9b0908ddc8f0976d101efb415c45e31. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DEH089700020.
Mass in D for soloists, chorus, orchestra and organ: Credo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b73acf816b1725f27ef1ff32df62aaae46dcdbcd3f32c66952e9881f64b08e. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/DEH089700021.
Mass in D for soloists, chorus, orchestra and organ: Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a78d379f79c74c8abd369b35ddab3f1c132272782cab754dfe4a6cd41d60ab. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEH089700022.
Mass in D for soloists, chorus, orchestra and organ: Benedictus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b992d4be53d4388d5518266906c35a3c13298d88e2531c3aa1edf301d17e789. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEH089700023.
Mass in D for soloists, chorus, orchestra and organ: Agnus Dei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe669cedbd04462d46b53159b3e13a638abf9c91b249295c3465c549041652a88. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEH089700024.
Mass in D for soloists, chorus, orchestra and organ: Gloria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b347a3ae7c579c7e79f8ec8e321c3e90dcb0eaf89f16f620757c6ce465cec2. 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/DEH089700025.