Hanny Steffek/Nicolai Gedda/Philharmonia Orchestra/Lovro von Matacic
{"copyright_id":"0x0311839515c4649f5d80b1774294b7ecb4791fe684d6873d6fdc081d39a7ae39","name":"Hanny Steffek/Nicolai Gedda/Philharmonia Orchestra/Lovro von Matacic","registered_at":"2026-06-16T19:47:39Z","symbol":"NIM1156853","token_address":"0xf28410157aeaef32b672c183af706e7e31df2c13","type":"artist","uuid":"56527fc7-7d54-43ab-ae4c-02c786365df9"}
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 0x0311839515c4649f5d80b1774294b7ecb4791fe684d6873d6fdc081d39a7ae39. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56527fc7-7d54-43ab-ae4c-02c786365df9.json and https://artists.proofprofile.net/proofs/artist/56527fc7-7d54-43ab-ae4c-02c786365df9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die lustige Witwe (The Merry Widow) (2000 - Remaster): II. So kommen Sie! 's ist niemand hier! (Valencienne/Camille)
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 0xbf3108a0307b08805cfefe5f6a6a0090de4862a8241a65728542ff3eaabe025d. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/GBAYC0000994.
Die lustige Witwe (The Merry Widow) (2000 - Remaster): Ich bin eine anständ'ge Frau (Valencienne/Camille)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c21b818ef5b233dc067a23270fd63d5f94804f69afaa863e42e59b5f4b9c0aa. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBAYC0000995.
Die lustige Witwe (The Merry Widow) (2000 - Remaster): XI. Rezitativ: Nein, nein, nein, nein...Mein Freund, Vernunft! (Valencienne/Camille)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c851073235ef60c262aa4214d471ff47a134f9d4537ec379a87ce80f1141376. 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/GBAYC0001016.
Die lustige Witwe (The Merry Widow) (2000 - Remaster): Wie eine Rosenknospe (Valencienne/Camille)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0aad5a62f304018589e1be7967a1ac338e14ec0e5afba2ae77b574ceab4f3ab. 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/GBAYC0001017.
Die lustige Witwe (The Merry Widow) (2000 - Remaster): Sieh dort den kleinen Pavillon (Valencienne/Camille)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9b48daabf6dbf838407c11da149aa261afd1717d2315db041b9c46031a357e. 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/GBAYC0001018.