Nicholas Kroll (born June 5, 1978) is an American actor, comedian, writer, and producer. He is known for the FX comedy series The League (2009–2015), creating and starring in the Comedy Central series
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 0x42ac053f1bca29e4f093c50a95408536c79a31cbb2e11cdaee224f4d62ead906. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a802d1d-9157-4ed7-9b52-99ca0cc12480.json and https://artists.proofprofile.net/proofs/artist/4a802d1d-9157-4ed7-9b52-99ca0cc12480.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 0x5c187228ec2635a16b46a1c6df0bd7b1f002d4a1d85e06c84d6afb867d9bb337. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US85P1419701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68be87079d67db12f8d869a31c167efee8c9e30ace7e1926db98730d92470290. 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/USQ4E1602399.
Sing 2 (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9426e51f880c8751199ce88f13d0831d88ebdb963ecf76f9af06e14ef54dcfd8. 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/USQ4E2101107.
Let's Go Crazy (with Taron Egerton, Reese Witherspoon, Nick Kroll)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3dbdcb12da9846e9279597e667fb0cae74e92305da8a85fdfdc68c3aae7593. 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/USQ4E2101096.
Where the Streets Have No Name (with Taron Egerton, Scarlett Johansson, Reese Witherspoon, Nick Kroll)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdc0efcc2ef95bed77ba62888022c4fab8c4340163b8d895e534d0a6a929311. 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/USQ4E2101100.
Sing 2 (Original Motion Picture Soundtrack) [Alternate Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3dbdcb12da9846e9279597e667fb0cae74e92305da8a85fdfdc68c3aae7593. 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/USQ4E2101096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9426e51f880c8751199ce88f13d0831d88ebdb963ecf76f9af06e14ef54dcfd8. 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/USQ4E2101107.
Super Songs of Big Mouth Vol. 2 (Music from the Netflix Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b9b5b371d0d81f8da30720acad94faf6ea04406d78b521c56fbe06ada605c5. 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/QZ8BZ2202456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cc668d1c682f16c51a53f434326d24b1f4818f15972200dcbeb02c91cfc617. 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/QZ8BZ2202453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66f872e2333ed3a165cf3559a10a06e1ee98e11d2cc1235b30dd97da7658a81. 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/QZ8BZ2202459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdc0efcc2ef95bed77ba62888022c4fab8c4340163b8d895e534d0a6a929311. 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/USQ4E2101100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97ae9df1d9645009a481789cddafeff07e817eb01dbd5d67052d916d05435ba. 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/QZ8BZ2202450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde3e48ebd0cda82152e0c185db808f79fee4d2342a6816f5614f94bcddef052. 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/QZ8BZ2202451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb85b44ec0ecae859a82179091b78daacf3a8c33d5506638a23eb6cfc02801d. 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/QZ8BZ2202462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa426de7cd33d55e1df09ffb1657f5aaa2ccd3e02f938ab83f4a30f0f9aa9473b. 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/QZ8BZ2202445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4212aa7a44cdde2a79e658cdf8d703b044192a573e3a5ea0f5666d3c6c9d7e1. 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/QZ8BZ2202449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1d3d0775d6dfd5212a1a0bbbb7cbe2eff588ba8ce5b9cfcc375cc1ed588f1c. 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/QZ8BZ2202465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68acf397e7f51ab4a01dc2b1713f1afcac8183016b78cbf07f117386e25321f. 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/QZ8BZ2202448.
Shake It Off (with Reese Witherspoon) - From Sing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68be87079d67db12f8d869a31c167efee8c9e30ace7e1926db98730d92470290. 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/USQ4E1602399.