Lisa Saffer (born June 3, 1960) is a soprano singer of opera, particularly Bach, Handel and modern works. She also teaches voice at the New England Conservatory. Early life and education Saffer origi
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 0xe1a2590d24c3ea21aedde08c7ffb7d9a02cca8e5249f22490642ebd2509e0c61. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44989038-24a4-4f2b-ab25-21241bced464.json and https://artists.proofprofile.net/proofs/artist/44989038-24a4-4f2b-ab25-21241bced464.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Judas Maccabaeus, HWV 63, Act II: Aria "Sound an alarm!" - Chorus "We hear the pleasing, dreadful call"
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 0x89e8dfad88702af2d9c5b6530a6538cb646832a544a34e39648d3bc1c8d4744a. 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/USHM19207804.
Judas Maccabaeus, HWV 63, Act I: Recit "Not vain is all this storm of grief"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c3c9b39ce1553970905aca8eb2091ec7788216fb8f8cab9a6d72f73e83d113. 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/USHM19207706.
Judas Maccabaeus, HWV 63, Act I: Aria "Pious orgies, pious airs"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffba3bca76a2bddfd1e47f8df813ecac6f72176c8d5151de714ab9417e9d6aec. 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/USHM19207707.
Judas Maccabaeus, HWV 63, Act I: Chorus "O Father, whose almighty pow'r"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37058ee2d4fa0b37415296540970072b700cc8649d9bce84c37359110ddc9732. 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/USHM19207708.
Judas Maccabaeus, HWV 63, Act 1: Recit "I feel the deity within"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cb6c07eac98053fbd9b6bd1b8c6274d201e8b617efaf5af0d4e11d3a6552e8. 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/USHM19207709.
Judas Maccabaeus, HWV 63, Act III: Recit "See, see yon flames"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0a99562c0313c2cfe6ab907347f1dcae50b946a6128d3d2ff603ff0d74ac08. 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/USHM19207810.
Judas Maccabaeus, HWV 63, Act III: Aria "So shall the lute and harp awake"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6b91f88cf9294edefc7370d5dbaf8f6222f1509c8c97100fdbd3b3f7b65adc. 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/USHM19207812.
Judas Maccabaeus, HWV 63, Act 3: Chorus of Youths: See, the conqu'ring hero comes - Duet: See the godlike youth - Chorus: See, the conqu'ring hero comes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2bc825a59e106547ebef9474c9d3bf69cdb0d47c3773489028d2fa606d07f2. 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/USHM19207814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6367866c2397ac7ab61ce5920dd5fa7ca82433cb87a72e4a58dc344c2ffb1d75. 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/USHM19207815.
Judas Maccabaeus, HWV 63, Act I: Aria "'Tis liberty, dear liberty alone"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6714e24d6390b44e6c6979ed49e7f8c56f0ee4f6eedc70c5ce1db0e61334825f. 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/USHM19207717.
Judas Maccabaeus, HWV 63, Act III: Duet "O lovely peace"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bc56dbc403049304f6811d4cdece17b5676a8a2515691c1da960c89a8a7e9d. 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/USHM19207822.
Judas Maccabaeus, HWV 63, Act I: Aria "No, no unhallow'd desire"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab7731da07c4c984a1930c52da47866e31a3e525504521de3da5d9869ac380e. 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/USHM19207723.
Judas Maccabaeus, HWV 63, Act II: Recit "Victorious hero!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7082a65c38b314396604a3f8d3e7c76c10ea76e2409dad7de722064c40e1f91f. 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/USHM19207726.
Judas Maccabaeus, HWV 63, Act II: Aria "So rapid thy course is"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f27a5ca471dee2126fe9f4a1e7178d5b3d65436ba6c0339600a2cf8481e389a. 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/USHM19207727.
Judas Maccabaeus, HWV 63, Act II: Recit "O Judas, O my brethren!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a7173600564efcdb6e567cbcdc3022e469f94a508581185e1163c9c3b30cff. 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/USHM19207733.
Judas Maccabaeus, HWV 63, Act I: Recit "Well may your sorrows"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340acc7fe533acbd8feec95f863e51d075dd1b9797ce64065d58f1727457ad03. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USHM19207703.
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
Judas Maccabaeus, HWV 63, Act I: Duet "From this dread scene"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ed8ec94e51ac46a7d4134f024679ecda9bf801dfcde6acf5875a9face22c55. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USHM19207704.
Judas Maccabaeus, HWV 63, Act II: Recit "Ye worshippers of God"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33319809aee1c36289b70519ebe5849e62c49e0e21124fae8f580541ef01949c. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USHM19207807.
Judas Maccabaeus, HWV 63, Act II: Duet & Chorus "Oh! never, never bow we down"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97229f04adf61dafd22be8e36beff77d86a30a95e17d53775864f506d8f85ac5. 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/USHM19207808.
Judas Maccabaeus, HWV 63, Act I: Aria "O liberty, thou choicest treasure"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12569e94831d2f79c26a4597deb60e35f87d1d0f4d8f250ae3a3c04f67c22bb9. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USHM19207714.
Judas Maccabaeus, HWV 63, Act I: Aria "Come, ever-smiling liberty"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1588aaf9082716996d865944e198d8f7d13d2c25ad772208618347693fdb3b74. 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/USHM19207715.
Judas Maccabaeus, HWV 63, Act I: Duet "Come, ever-smiling liberty"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0020b946da4223e378e3ea2b4cffa1bb6260002c0db219cb5a93a4e159abbbc. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USHM19207718.
Judas Maccabaeus, HWV 63, Act II: Recit "Oh let eternal honours"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1f70090fcbe643266d1466c6b76051953389e32a1dd2121356d7237899f995. 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/USHM19207728.
Judas Maccabaeus, HWV 63, Act II: Aria "From mighty kings"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63ab35a9261bec5ec613e30762a439b343ddcc31f7824d3fe90ea92908414d7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USHM19207729.
Judas Maccabaeus, HWV 63, Act II: Duet & Chorus "Hail, hail, Judea"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d73d8534e75698dfd46a5b8aaf6715484b4539b23039460060704807e959ea6. 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/USHM19207730.
Judas Maccabaeus, HWV 63, Act II: Aria & Chorus "Ah! wretched Israel!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d994940d0571ed57c41fe395ed2d599a67f1e6b079a986189d98da39c7315a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USHM19207734.