Dann Coakwell is an American tenor who specializes in Baroque and sacred concert repertoire. He is particularly associated with the Evangelist roles in the works of Johann Sebastian Bach. Career Co
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 0xb7c6c2800825a798eef562ae6bbd3ed343c0b4ba4c326c6a57b212fe0a74f9db. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b3f808b-123b-463c-8fdb-ecde3c249728.json and https://artists.proofprofile.net/proofs/artist/4b3f808b-123b-463c-8fdb-ecde3c249728.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Matthäus-Passion, BWV 244 (1841 Version by Felix Mendelssohn): Evangelium. "Aber am ersten Tage"
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 0xc6626f02de417f0473b553d73b98b66b646f66275000bf9dd74cc41047ce8f02. 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/BER182395309.
Matthäus-Passion, BWV 244 (1841 Version by Felix Mendelssohn): Evangelium. "Er antwortete und sprach"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abbef6333e26d745b9b26b04dd82afa89c07b18ca68e33baee712523acde93d. 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/BER182395311.
Matthäus-Passion, BWV 244 (1841 Version by Felix Mendelssohn): Evangelium. "Petrus aber antwortete"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69daa50f44ca821fed9e7587bacc521d33f74f2f3b00a2d6f65a1355a4db531. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BER182395313.
Matthäus-Passion, BWV 244 (1841 Version by Felix Mendelssohn): Evangelium. "Petrus aber sass draussen im Palast"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd933f30971fde99681d2d3dfc7ec087016103fd10928e50fc9e77dc73508f9e. 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/BER182395325.
Matthäus-Passion, BWV 244 (1841 Version by Felix Mendelssohn): Evangelium. " Des Morgens aber hielten alle Hohepriester"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c621f2628e2610e03c3e0e84667714c79e55440986682b17d6b124efddcbba1. 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/BER182395327.
Matthäus-Passion, BWV 244 (1841 Version by Felix Mendelssohn): Evangelium. "Sie schrieen aber noch mehr"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f6965e5ac5e5de2d3ef5adf2631fad9438640ad0a731afaa50e701509ff4f5. 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/BER182395332.
Matthäus-Passion, BWV 244 (1841 Version by Felix Mendelssohn): Evangelium. "Da nahmen die Kriegsknechte"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026442753aa367fde7822b8f01099cc9e8b4a46a73ba2f6238379769c88ce522. 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/BER182395334.
Matthäus-Passion, BWV 244 (1841 Version by Mendelssohn): Evangelium. "Da Jesus diese Rede vollendet hatte"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c516cfbd56ff1e35a40dc14936293a19a2cfbcae0b4922383e7fac1c9b005e3. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/BER182395302.
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
Matthäus-Passion, BWV 244 (1841 Version by Felix Mendelssohn): Evangelium. "Da versammelten sich die Hohenpriester"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33d68625872df709b31562d55aa799b331d925b631c7dbe52031bd50d4c5bab. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/BER182395304.
Matthäus-Passion, BWV 244 (1841 Version by Felix Mendelssohn): Evangelium. " Und er kam und fand sie aber schlafend"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd84a8d618efcb75b642f4063c10d7270fc449e725be5d8b1b1f3049da24712. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BER182395318.
Matthäus-Passion, BWV 244 (1841 Version by Felix Mendelssohn): Evangelium. "Und da sie ihn verspottet hatten"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6142eebb8758bedeca3d498ecac83d63a46b3ae2836b97e9d5a3db2a9165eb4. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BER182395336.
Matthäus-Passion, BWV 244 (1841 Version by Felix Mendelssohn): Evangelium. "Und Joseph nahm den Leib"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb346fde7e97de69df79c481a4649a09c9e947574ff83cc2f2e4ad052613af999. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/BER182395343.