Jerrold Lewis Bock (November 23, 1928November 3, 2010) was an American musical theater composer. He received the Tony Award for Best Musical and the Pulitzer Prize for Drama with Sheldon Harnick for t
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 0x5870d36020abfca38b8beec9a8bd4147c7fc7cd09783a53d0c7e0639438d1d04. 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/c0f11b74-fa1d-48af-8047-3f467248094e.json and https://artists.proofprofile.net/proofs/artist/c0f11b74-fa1d-48af-8047-3f467248094e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
She Loves Me (2016 Broadway Cast Recording)
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 0x8d41ab8ba28e0aeac256b1417948a9d3d82b967e375478b6d9dd835a1fb1b248. 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/USSK31642363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d184fc756a16674b2cd7b1a3e3502922a55088daa0328510d79e9341bf7f30d. 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/USSK31642364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d1d3e1076eadc20e97c1062a3d858e6f7aa1541b53013490d39293d2e62c13. 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/USSK31642365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbb30efcfddcff131bf08ca4b38429ca84e261c27f2a19128d406417c825452. 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/USSK31642366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb409d84e8ff6bdeb3b95c9fc753b418ce4a5137f5846b7fe8e51d824c351efde. 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/USSK31642367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c091238781e6f6d8d91408be9182535d46ea0daf8f77bffd11152eeac3c043. 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/USSK31642368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cb6ffa1217895e41b7b03a17356430961aa02acc9e9497c5152404af9f32e5. 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/USSK31642369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281f8d653154e04e27c1ddfd23951a259d8cb0302f5ae2eb7ee35d922d1650d3. 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/USSK31642370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a425b5fdf9c64814f1f5d1366f54fcac90e40c1592868263db7a06b4c84829a. 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/USSK31642371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2271fbc27011f24d0f5ad993cc7c04b304e15e0d4a0ff62a1811d3dbb91ee930. 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/USSK31642372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd91bc8722b28a91eab7b1df6f32c02feb6744aaf0e616b9845572b109d037d. 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/USSK31642373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d72a09331275c402c638eb51ed4a206ef3e992aacd3cfff32a8cacc16b7ff8d. 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/USSK31642374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678f4a9d525671e3bf53a7d47357e79945ebee713bd060bd02b69df688a97f1b. 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/USSK31642375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83c35525557852e62fa1beab9eda11a34d42f49e7e7be3c510375a99faa18de. 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/USSK31642376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8877a9a773ccd65d1bca22d4b6ab193c2af90804889875cd1a213e181ddb78. 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/USSK31642377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf090df52066a1f3e78a704e9cfc52580bdb1aab7570996d1a67918f839628807. 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/USSK31642378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c074c687b8bcca82cde6cf6e4e2dc4f6782fadbd2304190919018c1990a733c. 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/USSK31642379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ad923a3ea53049103c706936da7c65a562905331bb0f42c05d38d09a40a980. 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/USSK31642380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad890916daa79ce54d1b3afc378ef5fb2818735f1c1f1ccb37eaf71ba3a2382f. 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/USSK31642381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f74f0144e7602896ac9ae4287b9d9965c368ca1c36d968865909eb8a3e5b50e. 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/USSK31642382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd1e1a6c932a3a084ec2791d0ba6ce61cc00772a5afd573a550e49b774e55ea. 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/USSK31642383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973ce54998f9bb22b64bca3c51bc1bb3f565ffa8f7a2b051abbb7c75be972187. 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/USSK31642384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679bc6a0d63d28ce3dafbfc3052412f196ef21c4118fdf50c449c2b9c6c807f9. 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/USSK31642385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5051889d1b0fa7f17acadf290989e685ec41e6889cccc8a37e8cdc20d15f4e5e. 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/USSK31642386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2c51a8196f547869b7ac628e0223cecbb7848c21e81e6ba1ce36ebfcc47b97. 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/USSK31642387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd60802143eefe93c96d9a0de6c75b08a411c48fe309f293ad14bcaac4f2fffa. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBAYE0801370.
If I Were a Rich Man from Fiddler on the Roof
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12d414b52789110fb4c5e0917182fc148e9f4eaaa0fcb55dc9465484fdbaa86. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USSM16701442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b8c5e891b395873628fe11419f11205099e7bff368de1d49e13b7f59d7a890. 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/GB5KW2002895.
The Golden Age of Light Music: Light and Easy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80fabec00dd6aef3d9a9856fe71a601c2bfcaf6b976f31659a8cf3a38d7baaa. 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/CH6631158721.
If I Were a Rich Man - From "Fiddler on the Roof"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b27e934a7d0cc032f1bddb1b14e2b86c08164fa56b65b7149b316b407dea787. 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/DEN961800780.
Do You Love Me - From "Fiddler on the Roof"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bf302c34bbc82bda28703403cf2779dc52f464db6dc8253beb9fede16810fb. 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/DEN961800820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af8151a377785cb9f54c4fcc97ca7a88151a535dd935fc03368b4deeb97e3db. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/DEN960230207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087fad7f090b72e379d565db39846f71314c80a4c33d8d0b334913e7e40bb966. 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/DEN960230208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4faa396c81161b4ced163f17c1e0d9e72f328aa32814fc1374606b132927455. 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/DEF059902740.