Daniel Ochoa (born 17 August 1979) is a German baritone. thumb| Life Daniel Ochoa was born in 1979 and studied with Anthony Baldwin, Hans-Joachim Beyer, and Thomas Quasthoff. Among his additional t
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 0xc77fa3c976efb54bdf8f7ba1ab534f6f52671580203a8ae72cf0f567ef2a29af. Chain 2 (Bitcoin): anchored in block 953696 (2026-06-14T21:45:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71ceb195-d3f3-4c78-99df-1c425965fd13.json and https://artists.proofprofile.net/proofs/artist/71ceb195-d3f3-4c78-99df-1c425965fd13.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die Winterreise, Op. 89: Gute Nacht - Arr. for Baritone, Choir and Piano
Franz Schubert: Winterreise, Op. 89 (Version for Baritone, Choir and Piano)
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 0x7fa9181cc1428e6858824efb822215168a72cc16119487aa3f1696d857daf7eb. 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/DEX991792301.
Die Winterreise, Op. 89: Auf dem Flusse - Arr. for Baritone, Choir and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73243eab535113e1d26ba9d6d4d7b8b6e4c605e1a3a20f1487fbe6e3e60e9758. 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/DEX991792307.
Die Winterreise, Op. 89: Irrlicht - Arr. for Baritone, Choir and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63db0944e9a1b7928ad39d3df0740ce8246ae80d73d98b8d7845f8840d5d4347. 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/DEX991792309.
Die Winterreise, Op. 89: Die Wetterfahne - Arr. for Baritone, Choir and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52578f0cb5a05347348f74d44da025dc69b5e8941c9848cf05bd58074a8bdea4. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DEX991792302.
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
Die Winterreise, Op. 89: Gefrorne Tränen - Arr. for Baritone, Choir and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b71094eb8407ac9fe27ecb727e07894b4b63b93411b45462818df883f45049e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEX991792303.
Die Winterreise, Op. 89: Erstarrung - Arr. for Baritone, Choir and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54abf03c56d8ce939b399f4bd5c8e0405f7beba53ca13af14a70ec1eae3972e. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/DEX991792304.
Die Winterreise, Op. 89: Der Lindenbaum - Arr. for Baritone, Choir and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c84a8fe713a20f0917bbe30a00379565cd2faa1e53e432cae317aa954f1eba. 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/DEX991792305.
Die Winterreise, Op. 89: Wasserflut - Arr. for Baritone, Choir and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2838306b1fa78dc44dbec6b62931db5632ac131df804dcf4af05e691945011. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEX991792306.
Die Winterreise, Op. 89: Rückblick - Arr. for Baritone, Choir and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953798e3bf1eadab79b3ccf60c00a2e854bab0ffb64de1459e64987f80518578. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEX991792308.