Nancy Gustafson (born June 27, 1956, in Evanston, Illinois) is an American opera singer. She received her B.A. from Mount Holyoke College in 1978 and her M.Mus. from Northwestern University. She ha
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 0x1555a8de94224b74a2f23d4179b6693e65e432a29393d07d0e9109d73dcfbc2f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7594be1d-aacf-4044-88c4-3423d22b05c1.json and https://artists.proofprofile.net/proofs/artist/7594be1d-aacf-4044-88c4-3423d22b05c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wagner: Die Meistersinger von Nürnberg (Live)
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 0xc9c00a4f1dc7b1bb689794916945dead0dcd708e9d7055ca4b7828b7f4866122. 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/GBF079910780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffa0f681735bbfefe7382eacc1ffb8c17f0a11bbcf8eac1732c1deb8bae7840. 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/GBBBA0941800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87444778a7dd47a2dfee89e7a5de6f2ed915a6611c90397948c6754f61bf0ad0. 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/NLA509507802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8273e5e76b9b51c5344bfd51fe17caaf1b549cb3b3cff516c5137dd9b67ba514. 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/GBBBB2011303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f016c5ea85c06f98b5dbbff77dab280a16443656dc3c80cad6dd36a88ebc3a. 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/GBBFR0100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc827a77569fd4883f164d07b944396ebc43260b4a1e773d97ba0d0b07a78b1. 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/GBF079812520.
Some Kind Of Wonderful - Album Version Duet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43135a6aae483a22f0273f63e95d4799fb28dd9d2f0e5ef36598bb05a813816a. 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/GBUM70704603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f590b36777e8d40fb9edac56150a9cabc0f099eef7d4a223f4befc88395c7b1. 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/GBF079812490.
Orchestra del Teatro Comunale di Bologna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda34767914771e83db0c37fb8137805d660c4de53a9b033be13a097d818d45f7. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBF079441514.
Symphony No. 8: I - II. Imple superna gratia - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cd3389f3f38d7a0eb2349a7c6a4027484e90486aa042f25265cd6873ef9d55. 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/US25T0914297.
Symphony No. 8: I - III. Infirma nostri corporis - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c4515cf7956064494c125a9a58f5af9fdf359b08e81c369bc6c34d3e096639. 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/US25T0914298.
Symphony No. 8: II - I. Poco adagio - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa498aa5757bc16c855fe8777d7562e14eb4ed60cc1a45e1829b9dfa0f000acd1. 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/US25T0914302.
Symphony No. 8: II - XIII. Alles Vergängliche - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87bd5967aafad2b714a8e1209d18f3193d13628e2a93c5bc48a63a6eeaf195d. 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/US25T0914314.
Lehár: The Land of Smiles (Sung in English)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa47cae666da49dd9b15ef43f9c2673cbb6aeff54a3d97bcfc5c925f3385759. 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/USTE10701419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7d4ff01120c5ea71897cc6c73b1785be20634dfe73b1ac84abdbc2b7bc976c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBF079441501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf12dee3cb2acd4bdd6646f8bbeaefc1dd91d73ca0fdb65ccaecd354d115876d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBF079441502.
The Phantom of the Opera: All I Ask of You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db0570134d034db5a676b6af13621f58eadb3e81f9bd1e32cdda043ade08903. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBF079441503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a32051d63b4e54eea35f979f20cb72c416dd64e278a73d09b26ef71be733010. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBF079441504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a10f34aa2cfb865f5ee59e84a88db68b701127a8ca16f6ddc717e5f4230c747. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBF079441505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb717f2ba4986eb235c44f988e34e573c3f2b7e72e31942b51d8a2f307607ce10. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBF079441506.
Lucia di Lammermoor / Act 1: "Qui di sposa eterna...Ah! Verrano a te sull'aure"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3fcb5444212c57c7c04a901b1340d5020cc5a88ca2dbd8e3a4db5ac790b4ef. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBF079441507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdd0dbbbdb7d0117468ba74aa4d64ccf5f0df97279117f454d69096a2dcb378. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBF079441508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42857ac358d5ebc3659e374029caed09accdbcf59789121cb2baddbb95314d9. 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/GBF079441509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7398288e13debd359a4aa7c352f8d60c67d8fac19de1a5095ca7b47c732f3d6c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBF079441510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac77793e24f0057612f5359ec57dc59bbea1a598098f7f32a14548ec2094cc1b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBF079441511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5804a7227d75c566185cf477ad6bd6eb643b820ff0082f672022ad758850b60d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBF079441512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e652773fee709ed6aab173369c30083e951db83dcc4ea65c62683fce1aab98. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBF079441513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda34767914771e83db0c37fb8137805d660c4de53a9b033be13a097d818d45f7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBF079441514.
La traviata / Act 1: "Libiamo ne'lieti calici" (Brindisi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a02bf524d2c69994491e79c996a03dd77507db62030e6b163dcab8688bbf2a4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBF079441515.
Die ersten Menschen, Act I, Scene 1: "Was schaffst du, Chawa?" (Adahm, Chawa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4087492897dbbd07e7a01637fceb1a2e5184050f0c829bab35db7beaec9a00. 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/FR05G0460077.
Beethoven: Symphonies No. 7, 8 & 9 (Musica Classica - I Capolavori...)