Laurie Spiegel (born September 20, 1945) is an American composer. She has worked at Bell Laboratories, in computer graphics, and is known primarily for her electronic music compositions and her algori
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 0xd6da055baa35a6b9def61609a6a6b2a66e67e0c16a55cd2fd6fc9ecd6f950095. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d9a2f8b-f501-47c4-80a7-ad273a4f165a.json and https://artists.proofprofile.net/proofs/artist/5d9a2f8b-f501-47c4-80a7-ad273a4f165a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x37e8d91730cc5fa2b69bd1d96e37aaf70cf69e37306a623942bfeed6baec05e5. 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/USVML1922001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08ed45a30e28501d1e8405659349efeca756680e8e3ce8edede92e814bf09b2. 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/USVML1922002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78b4006f61c6e6031cc63b80bfda3bcdc1da88d1f0c746eb721ce58de3dad3a. 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/USVML1922003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2d2687f6c9b0d2704bf91ab6732ed2649a761778f7c4895b3f7e039a99e359. 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/USVML1922004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb002d62a9e97680e07f51770fe1c3d010c2635ad903eafd1eb638a18ab2ac158. 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/USVML1922006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662abdd497660543f45a407e2ff389cf0fd3ea74733ecb1f6264368d5ac41122. 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/USVML1922009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cd3185c092bb1c38423c4958b832c3e222fdc78d6b575951a09619fbe0e3a1. 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/USVML1922010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ae7cc22036064cece8d52f0d7ff4aabb0c53f3fbc533fb7728e918835865f2. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USVML1922011.
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 0xe38edbe0860a145ba1e34951f53d91407ba258a45aa33fcf65bd9451a8ce8a06. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USVML1922005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a82d53105831ecb2b9087240f7b0c70449d65f8b13004e560951325f4c4d31b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USVML1922007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ba95d0e072811e840ee7913bf4552ce9f19a352fabdbfdb31d6112d955b395. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USVML1922008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfced1c3324dc4cbfcd02a0bc955b1f6b983893188c2b51236cfba57be40daa73. 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/USVML1922012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff75e965ffd8f5210b08319812284b249fbefb846ede1b9d3371ce3bbd5e53e. 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/USVML1106001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ff7674aa36379869d898b53b92712b52b4e5564858cda6dc07a991b2a3279b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USVML1106004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb603dd570712216d7b00e478c81c3e80011948118df381519ac18f7baecce88. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USVML1106002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b919603e2d1d1f918ef2a1091adc0f8a08fd9f4513668007dd0caa7fb2095c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USVML1106003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f12d45f52c063e81219cc129f61c15d96641aa82ab501eb35e649d4bb77f2a6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USVML1106005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64c09ca6ed08a57218955e8c262f60f89d31ffe11e859e634fd6a76570b3ca5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USVML1106006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb1b78476ceacabed95b376bc2e1df00ed8f06fad7aebb6ba4f16381f53f12e. 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/USVML1106007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1adf76f5b6e1d516c3b08db36ac07fa014c2c344820febeaee44edb524916d. 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/USVML1106008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e13131d5f32b81389b8c276befe974461d9787dc8062c5f73d4f98a97980652. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USVML1106009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d227d3db83543120b1b890effd3e84545c2f3a24783a11a0630749f2e94293. 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/USVML1106017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8342a1e94e489fbe0025b9bb634aae8bf6cf3edb8c8e35d1989224ae66496a34. 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/USVML1106011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93ce1f5a10d2259a77a1c50a0c93c5d1474409efe2fe4fed69eff797c61bf69. 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/USVML1106016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2dd4b1bc252f88543db7789671b63d448456458944aec5bb3438e1cbc23641. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USVML1106013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7a4b59ae80e59c80b5efc2c75507914ff5625dd26ddc7dfa378522eef3b76a. 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/USVML1106018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd922e3f2bf6a8b8306b7f861ccfad127dc5240237240e8445bdff363e245e1e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USVML1106010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6215e5bd6c54e6a3ebcd4ba43986bb34e219b0d7c3506fb9d4849384b432ba68. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USVML1106012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f735889bee40fe93ced359a16b8b64c01871639175920658b7cd3c5dc4346d3. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/USVML1106014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d70322874eacae9b1d61df8ce7cb89eac0c5d560f298db8640fabbb7fb2911. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USVML1106015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8914fd14fbbe285d0c2e540575aba4607d8b8bb0b9f2203b8ef716c4d11534a0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USVML1106019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50266c0bd61f690e6ca381556019353233e4628420c5a9d20b34abaa7b6192b. 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/QMFME2342777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e11d24dd2765b6570dcb9e446daeb3054d07d5dc5377deae9accc78461eea8. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QMFME2342778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766570d41d3129e1fbca9e8493dc1b5733e5cd92d0e155e2cb35012ac2ef4fe2. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QMFME2342779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9650a7639938dc1b13af7bd33f32b74a7e2fbab0cd80e5439476d644dba65ce6. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QMFME2342780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd15bc0cb98b7ba1214e55864d9f398bc997184476fe3f46b9bff00872892848. 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/USVML1810001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2a89ae2c531979f528a215f1e9a07cbd82b510756695c081dda13a15320bc2. 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/USVML1810002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd584b8248825a41d07b61993502b2591d3b95982235bb00b938bb9441deea7. 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/GBBLY0000126.