Robert Tecumseh Burt (November 25, 1873 – August 16, 1955) was an African-American medical doctor, surgeon, and teacher. He operated an infirmary and later the only hospital in Clarksville, Tennessee
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 0x3357bbf4f00d382f845cae291cda932d2f79b39f90b2bb8e5a1cbc399ba8f4f3. 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/77e9c872-1e19-4901-898b-7eb477858a98.json and https://artists.proofprofile.net/proofs/artist/77e9c872-1e19-4901-898b-7eb477858a98.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dixit Dominus, HWV 232: Dominus a dextris tuis
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 0x357b1e4b2a666752a6fe416a0e15efd2e8ff2d5e3b71dacad3ac052068e4aeb3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBBBB9810217.
Missa Brevis in D Major, Op. 63: I. Kyrie
Britten: Missa Brevis in D Major, A Ceremony of Carols, A Wedding Anthem (Choral Edition, Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b75b02926077fa9ea50c7bce06f1afd7413650529a1f75b637809b9e7cfe0af. 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/GBLWD9800704.
Missa Brevis in D Major, Op. 63: II. Gloria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96a7b2648c21f63949881f5b927861bd8b83476c36169dce1ba5adcbf5e8771. 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/GBLWD9800705.
Die Zauberflöte, K.620 / Act 2: Eingeweihte Diener (Sarastro, Sprecher, Zweiter und Dritter Priester)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04eb6ceae2e56456a91e79e6be2f089091343d60cc91d66754ba471a9ca2ca7. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DEF059530820.
Die Zauberflöte, K.620 / Act 2: Was für eine schreckliche Nacht! (Tamino, Papageno, Sprecher, Zweiter Priester)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f1cdd89a4dd009b24b53dbfcdc135d03dc56e5aa687b2bcb19e07e55b8064f. 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/DEF059530824.
Die Zauberflöte, K.620 / Act 2: Du bist standhaft geblieben (Sprecher, Zweiter Priester, Papageno, Monostatos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efa106d97dd6e91c5548152c96a7f7f313a3d263ba39135d2faee00b94c0c65. 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/DEF059530828.
Die Zauberflöte, K.620 / Act 2: Dialog "Hier seid ihr beide euch allein überlassen" (Sprecher, 2. Prister, Papageno, Tamino, Weib)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc7996084b2b09e57fd95c225aefd13290a8a8f33fd5bb3d5ef8fb4ded31dfb. 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/DEF059530834.
Die Zauberflöte, K.620 / Act 2: Tamino! Lass mich nicht im Stich! (Papageno, Sprecher, Drei Priester)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116d555110070e935e1f0c4cb8569a6f9640647957e0a41594fee75a25258fd1. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEF059530842.