Leaders of the New School was an American hip hop group based in Long Island, New York. History 1986–1990: Early Years In 1984, Leaders of the New School was formed by Long Island natives Charlie Br
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 0x21c06b76a541a69d9dc6df89353d9d832836aa43a6c62370e440b52fe88416f9. 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/a41e9c5d-9719-46c7-9ca8-2ace7371e590.json and https://artists.proofprofile.net/proofs/artist/a41e9c5d-9719-46c7-9ca8-2ace7371e590.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 0xe03edb92d72003abc7535e27bf846f2cf4539e5af01717216fb12bda8b44a0e0. 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/USEE19100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734557fd561ca195539d01d487d71570ae953abbaf569af026ea861b018ba07f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USEE19100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22f6c4c8c969c820c9aae7c98a65e857574e2f2b8480e0933d91733697bb4ec. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USEE19100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6463aabc63892b0135b0c17be850cfe1c0f50c820b28cd134d5576cfd627438. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:26:37Z), 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/USEE19100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaff58a2289e79cb0943eb70349f3e6e74dd8b03c52c8ab062647bd9867d1aa2. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:16:13Z), 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/USEE19100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafb86e7490357c2793a01f585ebec62c44f6bd6461e865822fc98242900e812. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USEE19100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9904c2abd014db810405dac8785b87a850603cb2dc094d781d2519adf7bf02e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USEE19300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a8cc2c1cb13c061b8a0a5c73607f1970386b4a957a3ebd438d2ea21c76d745. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USEE19300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897a988b9e0db6a5c9d6134ecac1f8f9891563cf85060ff8365437eacb7bffaf. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:17:07Z), 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/USEE19300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d5de23a3d7866c0c28c242252252845edf9ab1ab02cbae2e6f3801f5b4a290. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USEE19300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5c8fc279f12907f0000a1313101d4bad76f58bc363000552fef8ffd262e9d8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USEE19300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa067ce4855932183e75cea7ea8b7e795f4af79331762ddf3e4b3e9f8983f71. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USEE19300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f325abedbf257f701becec42f1a4f7da34a5cb3e0b249eaea5a36ceb1f8c56. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USEE19300034.
Keep It Movin' (feat. Rampage the Last Boy Scout, Dinco, Milo and Charlie Brown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9541b3a38ecbb36c30b4359c75c09db12540b6e2ca005de4441a338c503cf1ee. 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/USEE19900129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409283215e6e5abb884a059b65b81f891769687b07bd12e311dad663f7abd63b. 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/USEE19300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409283215e6e5abb884a059b65b81f891769687b07bd12e311dad663f7abd63b. 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/USEE19300022.