thumb|Ambassador Peter Burian with President Bush after presenting his credentials December 3, 2008 Peter Burian (born 21 March 1959) is a Slovak diplomat and the Ambassador at large for human rights.
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 0x535482aa5ee216c3a7e90816189e8a54faa7b4e53673b58aec23b87ad059bdf3. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82a2171c-78cb-4206-a1c7-6027768dd5d9.json and https://artists.proofprofile.net/proofs/artist/82a2171c-78cb-4206-a1c7-6027768dd5d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Requiem, K. 626 (Ed. Robbins Landon): I. Introitus. Requiem aeternam (Preceded by Tolling Bell) - Live at Stephansdom, Vienna, 1991
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 0xa027206e107c2c7af748c2c86d88d1af3a6373179aaa3791207542430097682d. 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/GBF079140901.
Requiem, K. 626 (Ed. Robbins Landon): II. Kyrie - Live at Stephansdom, Vienna, 1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0a5efd987e959187bb9c1ef1a843fe11467f2438d10527a3e229ff1dc77c4a. 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/GBF079140902.
Requiem, K. 626 (Ed. Robbins Landon): IIIa. Dies irae - Live at Stephansdom, Vienna, 1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbab6d6c725f17c2fe6a89fe5ed60117592c2a38339f91121233c47b5634dee6. 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/GBF079140903.
Requiem, K. 626 (Ed. Robbins Landon): IIIb. Tuba mirum - Live at Stephansdom, Vienna, 1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cffd506fc35c21f7d5f55116f24f59c9a9eb43dc1b5553523fc77118f9bf48. 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/GBF079140904.
Requiem, K. 626 (Ed. Robbins Landon): IIId. Recordare - Live at Stephansdom, Vienna, 1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115caff99700564b3083f76f3e8bee22ce22c465807105305c030f6bfedc4af3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBF079140906.
Requiem, K. 626 (Ed. Robbins Landon): IIIf. Lacrimosa - Live at Stephansdom, Vienna, 1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8aa3f127b6c911a5965227447d68a035604795f96892950790af2adfb976622. 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/GBF079140908.
Requiem, K. 626 (Ed. Robbins Landon): IVa. Domine Jesu - Live at Stephansdom, Vienna, 1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4475741fd23c3b2fb447a22e21846bd5d38329b05291a292ca6eea11190b675e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBF079140909.
Requiem, K. 626 (Ed. Robbins Landon): IVb. Hostias - Live at Stephansdom, Vienna, 1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd32e23578571b9b760b3760ab8223960cab40b06656b53e94af9444e9379193. 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/GBF079140910.
Requiem, K. 626 (Ed. Robbins Landon): Offertorium. Prayer Over the Gifts (Spoken) - Live at Stephansdom, Vienna, 1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216647b2523ac2877ff07fff89e469c812e35f5203408efe476a20205ec780ff. 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/GBF079140911.
Requiem, K. 626 (Ed. Robbins Landon): Offertorium. Preface (Spoken) - Live at Stephansdom, Vienna, 1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771ce2460064c62d8ab65f27ab17d9822f941f9bed3160287cdaa76d6f5f89ef. 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/GBF079140912.
Requiem, K. 626 (Ed. Robbins Landon): VI. Benedictus - Live at Stephansdom, Vienna, 1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e13cc2a30535ee65b461b4494fe4d825e0a87da6ef787e1d0cc00f8359e67f. 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/GBF079140914.
Requiem, K. 626 (Ed. Robbins Landon): VIII. Communio. Lux aeterna (Followed by Tolling Bell) - Live at Stephansdom, Vienna, 1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16634dc053f46dd4ad87e0d2126c3da01ca186176bfaa63be7900bdd1a59c8e. 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/GBF079140918.
From the House of the Dead, JW I/11, Act I: Přivedou dnes pána! - Live at Grosses Festspielhaus, Salzburg , 1992
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114b8c45ed4ed85141d40e3ee193ed0f5a1ad741618e029662cdea53d1d78278. 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/DEF059232503.
From the House of the Dead, JW I/11, Act I: Aljejo, podávej nitku! - Live at Grosses Festspielhaus, Salzburg , 1992
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95522ace6a689ff3aa3100d30171e2cc1e6551109aa0320346679b37606f5268. 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/DEF059232505.
From the House of the Dead, JW I/11, Act II: Mil´y, mil´y, Aljejo! - Live at Grosses Festspielhaus, Salzburg , 1992
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b10746c97aac3fac3179b34d4b57e4f10b5bd220a75dc2f1baa11d86c9a9a2e. 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/DEF059232507.
From the House of the Dead, JW I/11, Act II: Skuratov. Poslali mne v Jurjea - Live at Grosses Festspielhaus, Salzburg , 1992
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641e91afab6185de6d3eba8b59e1ad8c5155a04502876472d93784fd4c33dc92. 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/DEF059232508.
Lohengrin, WWV 75, Act I Scene 1: Hört, Grafen, Edle, Freie von Brabant!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fa837cd0509c1d973943a61fc68fbbb3f62476d947e0683b4305527a3b4bff. 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/DEF059131612.
Lohengrin, WWV 75, Act I Scene 1: Dank, König, dir, daß du zu richten kamst!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631ae51372466d65acde01978132dd329aaf041819b3a4dbfc301d5c209a58f8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEF059131613.
Lohengrin, WWV 75, Act I Scene 2: Einsam in trüben Tagen "Elsa's Dream"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a76b044bdf01e07ef34be25b4d7c11a6d2a8eb941ae9cf143853e3bc54556ae. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEF059131615.
Lohengrin, WWV 75, Act I Scene 2: Des Ritters will ich wahren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa848d9d0f526d1a8ab1a0cc4c825f9ddbfbcb693b46c6d7c30a0b2b82f97ec8f. 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/DEF059131616.
Lohengrin, WWV 75, Act I Scene 2: Ohn' Antwort ist der Ruf verhallt!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da4cf2e023e880e54f6d0de7dd0cbd0ba97ba4c25e99191bfb941026dc1a66c. 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/DEF059131617.
Lohengrin, WWV 75, Act I Scene 3: Nun sei bedankt, mein lieber Schwan!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73eb4619c373d9e19e4d6a1f94f8e865941d0a042f8fc33af9ff0902a563f118. 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/DEF059131618.
Lohengrin, WWV 75, Act I Scene 3: Durch Gottes Sieg ist jetzt dein Leben mein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8866f6d7efedc325ecd5137386d4280b92cb18401d5e942915ffd0f1b7aed04. 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/DEF059131622.
Lohengrin, WWV 75, Act I Scene 2: Seht hin! Sie naht, die hart Beklagte!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d2119a7a463ba3dc3787a9fd326b5baf9ff8d1d2216050d528fbc8746f04ba. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/DEF059131614.
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
From the House of the Dead, JW I/11, Act I: Neuvidí oko již těch krajů - Live at Grosses Festspielhaus, Salzburg , 1992
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26805acb3ffb85e33f4f61a555adf4347a144720eee6b5803181bac54d5d25d8. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEF059232504.
Lohengrin, WWV 75, Act I Scene 3: Welch holde Wunder muss ich sehen?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ee583ceb6b19b357b33399e588ea310735a97843ba0df0d825543d31dfd901. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEF059131620.
Lohengrin, WWV 75, Act I Scene 3: Nun höret mich und achtet wohl - Mein Herr und Gott, nun ruf' ich dich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7113f7e0efd194f3f69c530356ace7a5a637b9c0e18e4c5ca99fa4784c7aa3. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/DEF059131621.