Matthew Broderick (born March 21, 1962) is an American actor. He starred in WarGames (1983) as a teen government hacker, and Ladyhawke (1985), a medieval fantasy alongside Rutger Hauer and Michelle Pf
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 0xbd3f990e69cb6afb16cfe2f94afa37867dda26c54544e340630ea7aa63098236. 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/3dd9e99a-2b95-4292-ba6f-5a7715f0731b.json and https://artists.proofprofile.net/proofs/artist/3dd9e99a-2b95-4292-ba6f-5a7715f0731b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
When You Got It, Flaunt It (From "The Producers")
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 0x80a8b134184ad863edd6ef4870109e21a38e32825f0d8475b26dcc23ea8ba576. 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/USSM10506162.
The Producers (Original Broadway Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c6fb8dfc48df59e4073cb627424416dca468254d30c1b231e1e40d15887358. 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/USSM10103207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ed0df8c5f666f14f235f552428da08c046174273fac75945e5c9de11482dec. 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/USSM10103208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b2ade49fcdbccea6f87ed4814b1b6438172530d557864404de98a6323f163c. 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/USSM10103210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506a2c3c5c37d39f979d78608c3d6252c482f7f95c3c360e3c7980c1732e95dd. 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/USSM10103211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7da4dc09d966357d09bf7a2f60c655ec703feea7443f7e6f4dbe51fad8d1e2c. 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/USSM10103212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d303dc6a054f56b5dbb9e8ab422adc93c863b2b468da1e01903543fced98cd2. 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/USSM10103213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6301ae132a9498916eb59bce5e2ef45f5088ae9496552c332fd20da25026220d. 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/USSM10103214.
You Never Say Good Luck on Opening Night
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01bd94b59326149fddc3869842f89770d23be11ad71626e1a451a69544d3fac. 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/USSM10103217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1ebe8546c4537526b55720df42b700c4780731beef04a8f09a6913f0df5694. 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/USSM10103218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14d67cab87b7f716f6fe058d8995edd4b0a609c7ef672a0e357865cfaf6e1ad. 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/USSM10103219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c9fdc4c306c705abba82bace99f9d8fd37cbd4f5745057b836967f6c26df53. 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/USSM10103220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ed0df8c5f666f14f235f552428da08c046174273fac75945e5c9de11482dec. 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/USSM10103208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6301ae132a9498916eb59bce5e2ef45f5088ae9496552c332fd20da25026220d. 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/USSM10103214.
How to Succeed in Business Without Really Trying Ensemble (1995)
How to Succeed in Business Without Really Trying (New Broadway Cast Recording (1995))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddf321f312455c03f550a8968ac262a6c8da7d359c980634185992f2879008a. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USBC19505337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8734d259640ca432a7cccb9a82540aa9e17e2d2ed5472796d45612f9f39b77fc. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/USBC19505348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2805046bae590ef8e15587c82114a45b35922d48dfc2b469758c1709ee1b3c. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USBC19505336.
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 0x2984218237a3d9d0b1129a0fff7708116c2b33f3d01575d9e8bcad8257771519. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USBC19505341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee4fe114aa6ed3e64e03b48acfbbde3eceb91b1dbc1db63dc93ea2ded690b31. 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/USBC19505345.