The Underachievers are an American hip hop duo from Flatbush, New York. Formed in 2011, the duo is composed of rappers AK the Savior and Issa Gold. American record producer Flying Lotus signed the duo
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 0x9c1786f3c052e485bca5d249c81e931bcb86d0ac7eab9437788455ad2d423cf9. 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/aeeecf11-1765-4d42-9b15-4f800b9fb942.json and https://artists.proofprofile.net/proofs/artist/aeeecf11-1765-4d42-9b15-4f800b9fb942.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 0x4ff40d24f85143f75fa2cca423679c7b0ea20d00ba698201ee53d8ef7e109804. 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/USQY51457577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a159649ad0c8e46d2a63fee84add4e74105b69fa6508dc0042c9ddaf086826. 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/USQY51457580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9abbe4b35b4d9c8303ca118576385f7c1e52f62a8396e404813eb553e6f0f99. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QMEU31401779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c45b4545b854ee5c621b01a443f94b42bb9aeffe027f68bf931f86490f932ec. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMEU31401781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c930eb962323d267c7d8ab05478855e487a78599eb7d73ae67e72fe17bcc0fd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QMEU31401782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa840f873b4fc52f8af6924305941386427c9ceca20972784582f8519bb78031a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMEU31401783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135c6450c6c4d9b52486914c084cb12594506ad3a51e9f5da6920692da1a1507. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:39:18Z), 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/QMEU31401784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49eacfd104e75634bc1df6e98ec1ffd1bcd5d2066a5e814b76c93d104d257d3a. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QMEU31401785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be4f2f74facf055e89190d72032005c5fc070c2a8649fd4601e79bc8814a3ea. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMEU31401787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3175079d3a16e50c4f77ec2cceb1ea62a22ada8f7cccb8269de991d6ba5a30d4. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:27:48Z), 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/QMEU31401788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457d851d241405499242d5cc6fd5d8538f3126924b61d998f3b67f13793f2bb1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:03:36Z), 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/QMEU31401789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a77a136a790bd3fbe017d9477d166a327818240d49a4f4261f9e3f834a3de9f. 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/QMEU31401924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8920616818cfd5d14be7ca92d1d367e747586f580e3e1b9614a95520a9ac88. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USA2P1494475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cc98b44f6dea9c81e7bf8033d64af1351fb922aa848cd670b9e886b0075f51. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QMEU31507750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723cab045c893b5afe53ed2fd565612edbd5fb3329b31f5ac1c6678a2c5caecd. 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/QMEU31507751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62466d6f207e471a7a903867aa21b1793c977246dfb2872c693f22791bb285b2. 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/USA2P1650421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049311483393e610b005ba5a25acf2ad868371a45f9c00ed29b3f28694174801. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USA2P1650424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff71f66dd84d3c4608a934cfd5994830585cbecd396283c83c3ffb921375186. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USA2P1650425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5304407b668ba82863c506e033402626ba4ae75206c34a91bc3e6b9226c36972. 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/USQY51729929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a069f86d3234b6368ced9864d28ead515e854f3f7543dc7af72e2a7da2aac9. 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/USQY51729933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17654a19af646efea1c89f5dd9258ed0d1e072210d6929077337ddf29855a464. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USQY51729931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39753e7c7dd5b50e46d301211b28df59b4ad49d440d22cd98cb6438eb1413eb5. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/USQY51729934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e0c3e1ba458cf35adcbcf87c96f92824f12bb8559811a8d558ae8c0ad6bf31. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USQY51729936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a78bf66074c9718b143cacbcb5af21025f19214702484ee67a730508a70c87. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USQY51717624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cf2b81c1aa3137735597d7feead1663616ecc2139a69acdcc8e8abf09b29a2. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USQY51729938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61fea89ccff3ed254e8a699b87cb678ed17da2ea809b6b32d0adb667dfa7c09. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMEU31818522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6999427b27c2d7cccb99ef03e2ab9f87b9e3d0f6e79c6c09fc3a4b0ffac825cd. 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/QMEU31818523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a82eec58e32bc2f4de7fb5eeb39c8e9cbeb4cc25fc16df182425b200af1316. 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/QMEU31818525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab9cfaa32c466d28284deff56164adf7bf953100bb47e2b1543c5b43f651569. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMEU31818526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffbeb4f7775683c6800c3c92e4a3dae0e8ab8999174638a12671974c42b950a. 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/QMEU31818530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9044cabe7ed25243b7f6d60d5658353031beeb91715296e9841bb10d4ef304ff. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QMEU31818529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98235946b66edd5fb7a214a531f0197488daffd95a8a2f65e82ddbddd7efbfaa. 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/QMEU31818531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60670f63e9c08d98efe6f84e795d74d6b68b815e8d814f012c20606bcc30e55. 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/QMEU31818527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5377d6445102df9292d9deffc4ac5a0691978f94edb591896f07e14fc097435b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMEU31818524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc632508df52048921e5086312c6ec94f892bcf46fc3ec0c99a0145d534911ccc. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QMEU31818532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719504a089a840ce299211d29260dcf3f877b7a80279d2022f62f4c274571a52. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USA2P1919633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adc428422a45db54027cd186004ac92c6dbdaf8acff25a8c339700e6c001402. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USA2P1919638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5716944925fb621c9ba297f32fb8a2a1f6d1ffe4d864137d3c53e133d8b192f1. 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/USA2P1919635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f440dceae76c997b6ecbf2bf40e71c08711315bc8fe9266f9f13770d9b1a91. 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/USA2P1919637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa878aef2e200d0a4a1671f447bc832af8c33b7eaa1f8f059324ecb93bc60e0a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USA2P1919636.
Problemz (feat. Erick The Architect, CJ Fly, The Underachievers, Zombie Juice & Nyck Caution)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3718bf339b1aed1d3e45d499124706101637974b0ae32aa8955759094fceae. 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/USSM11903528.
Bones (feat. The Underachievers, Nyck Caution & Kirk Knight)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43576d66d3e5a6299699715c3b071d9468b9c4bea809d8a46b35945dce4e7bbe. 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/USSM11903512.
Left Hand (feat. Joey Bada$$, Flatbush Zombies, The Underachievers, Kirk Knight, Nyck Caution, CJ Fly)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272f4fce74725861d9f033a6e9e7a45f0972ebad4195af3ad9b188b9231cfd14. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11901473.
Pull Up (feat. Joey Bada$$, Meechy Darko, Zombie Juice & The Underachievers) (Beastcoast Remix)
Pull Up (feat. Joey Bada$$, Meechy Darko, Zombie Juice & The Underachievers) [Beastcoast Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b03f22b1ec62d4d2c52af76b307017a7db3ccc23c24eb7dc9c6705d8b4eb2e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMRSZ1801830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7197c24df14501c3c9b74341d3696b0befc741c7b72dc18013c358a2eae17e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2462657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5052ae01a4372f311e618e6f401d3340eedcf6ca95a4edb4e6335f9e78aa97fa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:29:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2462658.
Pull Up (feat. Joey Bada$$, Meechy Darko, Zombie Juice & The Underachievers) - Beastcoast Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b03f22b1ec62d4d2c52af76b307017a7db3ccc23c24eb7dc9c6705d8b4eb2e. 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/QMRSZ1801830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b03f22b1ec62d4d2c52af76b307017a7db3ccc23c24eb7dc9c6705d8b4eb2e. 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/QMRSZ1801830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee05799194954bdf9fe53ff79de48027bb818c071d9c4f78fd2ca22a49088d2. 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/QM4TW2399571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c708b9bd04bfa98f38469ce67552672909283e7549692c36e36b409ad571b72. 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/GBLV61640843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee05799194954bdf9fe53ff79de48027bb818c071d9c4f78fd2ca22a49088d2. 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/QM4TW2399571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb68593efa97215c0efd27b48da098f7891b601ca35f1c17db615d2c1231c037. 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/QZDA72094835.
New Brooklyn (Remix) [feat. Flatbush Zombies & The Underachievers]
Peter Rosenberg x Ecko Present: The New York Renaissance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292dd373faac21a1bc9c818cf05384718aff59df7464cd3ac3d29d0dbe63934e. 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/USLD90805026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91cd4ed37b5004923dd0dfad4fd4e3f69b4f49c626c6f502e39c9e817dc6145. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/QZPEW2462659.
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