Eberhard Waechter/Elisabeth Schwarzkopf/Philharmonia Orchestra/Lovro von Matacic
{"copyright_id":"0xddfcc4f44706363f976c15628e058de7793d7877ba5c521d963f97fac77fd030","name":"Eberhard Waechter/Elisabeth Schwarzkopf/Philharmonia Orchestra/Lovro von Matacic","registered_at":"2026-06-14T11:09:30Z","symbol":"NIM0434179","token_address":"0x40a8326f2969d2a05573b9532486fc417060076b","type":"artist","uuid":"3f8df751-b9e6-4003-b334-da96247e0f05"}
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 0xddfcc4f44706363f976c15628e058de7793d7877ba5c521d963f97fac77fd030. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f8df751-b9e6-4003-b334-da96247e0f05.json and https://artists.proofprofile.net/proofs/artist/3f8df751-b9e6-4003-b334-da96247e0f05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die lustige Witwe (The Merry Widow) (2000 - Remaster): XIV. Lippen schweigen (Danilo/Hanna)
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 0xad86382890c72d846eb0b90b6e53dacb7eb19847a91cace294d5ed1ccd43dec5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBAYC0001029.
Die lustige Witwe (The Merry Widow) (2000 - Remaster): Rezitativ: Sehen Sie, da würde ich jetzt zu meinem Manne sagen...Tanzduett (Walzer) (Hanna/Danilo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1565fb632b025ba544c08eb7d6f0b870b16ccfbf1335f97ccaf49519cce165a6. 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/GBAYC0001015.
Die lustige Witwe (The Merry Widow) (2000 - Remaster): Der Letzte ging, Sie sind befreit (Danilo/Hanna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea14bde402fa016f25f98e678f639f0e0df82da378af5549c228cf597eca9b46. 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/GBAYC0001007.
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 lustige Witwe (The Merry Widow) (2000 - Remaster): VIII. Rezitativ: Graf Danilo, ich wundere mich...Heia, Mädel, aufgeschaut...Dummer, dummer Reitersmann...Rezitativ: Wenn sie wüßte, wie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9170f0a804f7ba13f6d414b4a69b76fcfe552272932e2dc86825d2c5f3f0486c. 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/GBAYC0001012.
Die lustige Witwe (The Merry Widow) (2000 - Remaster): Rezitativ: Graf Danilo (Hanna/Danilo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68550956a0db7528420be5c4d7047c11231f3c925d2418071be1a27154eb15fc. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/GBAYC0001028.