Louis Cato (born May 3, 1985) is the bandleader of Louis Cato and the Great Big Joy Machine, the house band for The Late Show with Stephen Colbert. Cato is a singer, songwriter, producer, and multi-in
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 0x179020b3442840943c277706fca2b1425b48857e143a0637208b43af98f35374. 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/c57e4cee-e600-4b56-9816-ca88d0d6fc11.json and https://artists.proofprofile.net/proofs/artist/c57e4cee-e600-4b56-9816-ca88d0d6fc11.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 0x73ccc5f9ec5e0c698015728fb88b237504bf65e313d99b4bdbea9c93ba47bcd1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US8JA1758002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6446d6cbd1f1bee81303a4c756af57308971dca39f920c4a24c4069cd5502f5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAHD2321069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e209492e671a9de4f4bc8018b33fb85baf8308a92ac693ce3908cc1031512a8. Chain 2 (Bitcoin): anchored in block 957830 (2026-07-13T09:15:55Z), 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/TCAHG2369223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b66fad91fb49419598874842068b3314bf2030f30b053e439c7674ab9a3248b. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/TCAHG2369235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdcbea2c1aaf59db724d81e5dfe8516988e3c4bb49025e3df48c6f5774a2a25. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:17:54Z), 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/TCAHG2369240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2502763f196fc024e1efa14dabd03c2abfe30138b33d135048a2370f0ebe78. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAHG2369250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f4940e4e549f7b5849362637b9b33169e6a2c504c6dc43452d9cc97a6bcba3. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:50:20Z), 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/TCAIO2476512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f345bc056975c5ad86251760c374539771c9f96b23d0aaffec7b92307530b64. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIP2476518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109456c94409620fcb561a644eb394d2986f7c918651a40037e5f20191922869. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:11:26Z), 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/TCAIP2476525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54378afa5bf18c90dbb6adc4dcd11d9d91ab1d154dc710512c11774251fa5b2. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/TCAIO2476540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d55578747447b054010544f953f6d60996e1dd0be615166cdce32f9f5609585. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:24Z), 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/TCAIO2476557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fbaa4f390d12231a37c2bac866f15128a581b4e85337ae33225c5d575e621a. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCAIO2476698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce3f33bef9fcd1a072b3671ccf38355c299433c9e9685e81de5673bf0699016. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAIP2476704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb456e7385eabf77a01a8074a44bab716661278f7b24b44346a4074bd296786ca. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAIO2476762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f5261bf8b15ee251a1fb6525ac4e0c30e7d966330ee56ea47678c6cd2481a8. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:55:38Z), 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/TCAJL2504646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb040a433a33c0fb372c78e3aaf982a13797e71cf7b072469aaf74fce471b630c. 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/QZHNB1963484.
The Music of Ray Charles: Live in Los Angeles, Complete Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20101f41dd9938445cacfd32daff8e8ab7b1861408ba47877ca4ef2b7f507a2e. 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/QZNWR2076307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cbd69b5275e588b3198da8ab6d3f583914acc914f01376458de4a5d5f4ae87. 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/USHM82116898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd484dea93c2ca5f40139e8dcb83be282a54f45fa323acaa6fc091a691d7dd2ed. 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/USCGH2262079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cbd69b5275e588b3198da8ab6d3f583914acc914f01376458de4a5d5f4ae87. 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/USHM82116898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb040a433a33c0fb372c78e3aaf982a13797e71cf7b072469aaf74fce471b630c. 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/QZHNB1963484.
Sleep (feat. Becca Stevens, Gisela João, Justin Stanton, Louis Cato & Michael League)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802dd8ddf35e0f8f05b389b6ce9a822a88d47d622d0f333e680e60c5583384fd. 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/QZ2EW2100061.
Over the Line (feat. Becca Stevens, Gisela João, Justin Stanton, Louis Cato & Michael League)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829ce5dd8c2a8095d49c1677269ecf787639f25dfd21ca4213f2495950dc387c. 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/QZ2EW2100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f42d4c0b6d448ce23316a7cdc5a89a20060501cb3adaf0d8d264960d27c610. 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/US8JA2111018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d5c643c17c6340ee7a515a488ce0d96c32704095b400215dc239c7c40a68a4. 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/QZNWR2076305.
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 0xc9c49faa85a289c2f6af26c0fcc7517dd12385f68f0aa29058760b763c0c054b. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/USCGH2188015.