Dropout or drop out may refer to: Dropping out, prematurely leaving school, college or university Arts and entertainment Film and television Dropout (film), a 1970 Italian drama "The Dropout",
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 0x9eb2e15cce541d332735a8de8b6d52fccf65fbd9b82e0a9ed5ce938f554901a1. 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/a8e571e4-1155-43c1-b113-9aa1280a8eb6.json and https://artists.proofprofile.net/proofs/artist/a8e571e4-1155-43c1-b113-9aa1280a8eb6.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 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 0xbe8f2d0eada1ecfdc3e092237dba2a61cd23be6f932dc4d51a732ce8ff3f053c. 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/TCACM1619930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea78c0f2bf952ec3a2d634522cf5ed660bb17d76b7c52f3909bb75dc01cd23db. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QMFME1588247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cc8d0ba7c4d939729c235c6b7c41a9a5106bef72bbf8e701252b6395730d96. 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/TCACR1606374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8904f0d541fabca9050dea32c89bea2548f3129ece9740ad502480a84e6567. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:00:40Z), 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/QM4TX1605150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6401673e36435491d0416aa5d5a668cc45aa132747e1221d7a9a122e70a4ba4e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM24S1702180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831f377a2b07269f3278e7e0baf9c1ce6c77dc0c6c18b88bff03c3e83048cab0. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:37:50Z), 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/NLF711700254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a22dd02eb26bb262b6ec444c1a94076f5a1e30f9471da82ea244d1c65a0846. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLF711701618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102521a8680e43b38a5c1561b2f573e7a4b4c4fce5041977e970eb186775a912. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QM4TX1736162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc9e1f351914c96ebbf555f3a0724b35cb4a7a58b2d6d0fb9175160ddb6160d. 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/NLF711702305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513466bc96f6e20e26f8378920b8feda6995581b8552360b0ff1fb24b259140a. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QM7281741988.
No Scrubs (feat. Wendy Sarmiento) [Decoy! Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97b088fde0b91da427ceabbabf768eee33470f085315cd52185dea13be25f0d. 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/QM24S1804541.
No Scrubs (feat. Wendy Sarmiento) [MÖWE remix]
No Scrubs (feat. Wendy Sarmiento) [Funkshop Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc919aca71bfeb2657a3c91352d49254239e0f8eb88b5a43aa4ca353c4c4005d1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMDA71844285.
No Scrubs (feat. Wendy Sarmiento) [Jack Trades Remix]
No Scrubs (feat. Wendy Sarmiento) - Jack Trades Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc919aca71bfeb2657a3c91352d49254239e0f8eb88b5a43aa4ca353c4c4005d1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QMDA71844285.
No Scrubs (feat. Wendy Sarmiento) [Nector Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae9911d2bff4600563f287f4505707129d2656af381aaa144c6b713e2139690. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM24S1812535.