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 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 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 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 0x37e8d91730cc5fa2b69bd1d96e37aaf70cf69e37306a623942bfeed6baec05e5. 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/USVML1922001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08ed45a30e28501d1e8405659349efeca756680e8e3ce8edede92e814bf09b2. 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/USVML1922002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2d2687f6c9b0d2704bf91ab6732ed2649a761778f7c4895b3f7e039a99e359. 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/USVML1922004.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff75e965ffd8f5210b08319812284b249fbefb846ede1b9d3371ce3bbd5e53e. 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/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 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/USVML1106007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1adf76f5b6e1d516c3b08db36ac07fa014c2c344820febeaee44edb524916d. 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/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 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/USVML1106017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8342a1e94e489fbe0025b9bb634aae8bf6cf3edb8c8e35d1989224ae66496a34. 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/USVML1106011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93ce1f5a10d2259a77a1c50a0c93c5d1474409efe2fe4fed69eff797c61bf69. 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/USVML1106016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd15bc0cb98b7ba1214e55864d9f398bc997184476fe3f46b9bff00872892848. 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/USVML1810001.