Nicholas Carpenter, known by his stage name Medium Build, is an American singer-songwriter. He has released five studio albums and is signed to Slowplay / Island Records. Early life Carpenter grew
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 0x6fd09591753204cf7fd69833b6e6774f77126979c95e1b37af9a5a5f6e044f5d. 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/42d1e7b6-4337-4322-9f95-b65e370d1a08.json and https://artists.proofprofile.net/proofs/artist/42d1e7b6-4337-4322-9f95-b65e370d1a08.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 0x73d87ea0aa0be2207ff8f9d1bee17853df1c14b2c655d20a98ce1d6055c7d664. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/SEYOK1666030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c39fb19932e84e90ed251eaf741975f9c0a2245eddcd91c16c3af26473d52aa. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SEYOK1666032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9387cff5355fb1d48c0b337c4d0e5b923cfaf9162bd02f1a8865b24391f7ff86. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/SEYOK1666033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271c02e834c3a7c560292a97fe90c57567deb938074380742941441f3bd00fa9. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/SEYOK1666034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066d5953cf7dbf4f06a001a2f7529cec144d8a80345b89af0f8477eb15296cfe. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:43:55Z), 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/SEYOK1666036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9570bf2bbd438d2c525fd76772cc36dccf6d75c7752018d24b8d2a21a81702ec. 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/SEYOK1832197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed2ff0c43bd7d1a66704a59471969f4f1ae224b493377791d9c6176877002d7. 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/SEYOK1832201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2740026e3f37dcbf3389789745f44caa3f9b7e3c0672deb6b6d2220151d677ea. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SEYOK1832202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd967b5115b79d1f604ab8595710132dffc9b562408c19060dca7d5d027b1f4d4. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/SEYOK1832204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bc8744d39e18c295ac37fb0da9c849286c64d49893b3a73110d15da26f1aa5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SEYOK1861734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e5dc9e2048f10f7778b8a75a87e46d43256052d596684a9c94ba1d184af663. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SEYOK1861735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9172b1a2306a5a003d99c2246f1f9ec5495091bd54dbc765a3c9667fe65d8d0. 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/SEYOK1861736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e8be9723b20d07665e55a88af8066d04648e20be39ba5bb028f0487c1fcb0d. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/SEYOK1861737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b7f2232b214609a163943deb7d78c3608e57e63cd70bbdfad1cea023347107. 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/SEYOK1861741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a849c65dd1c6bcfa634820008d06ba159af449ee98677fa2f6cc2c4d83e5ab. 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/SEYOK1922328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cfc947e5c07d107aec047dd4db89d297666eef95955696d6e1c24892b7c96d. 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/SEYOK1946739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48783fef0501d51e63f9af16568c1b2916fe29c3a888115c964ef8ac3271c60. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZ93L2024642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7f3f3284d868f546ef685d98e71eac21e97d73f5b22c64e90e2f4940bdb038. 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/USAT22208677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349d178ec3d9ef1be888db56293fb061c5760602225012f2eab17626c5db97f0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:23:34Z), 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/USDAI2207861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf901719ddc34fd464d43179dbf154e91e30d08933b5e954734f5732276f92983. 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/USDAI2210397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349d178ec3d9ef1be888db56293fb061c5760602225012f2eab17626c5db97f0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USDAI2207861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabdf7f4784d354993077225ee954f9d6bb0e40004a1dcf5f0d6bd3cbd6a3bef. 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/USUG12308288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad771ef29388de9f8e65acffe509b2a770e7affc8498f048751f933d02dac64. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USUG12308287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b8493c741fd5067c4869cff6909ea863507d93b0b9852dde537d22cb82edd4. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USUG12308285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bd3f33844eed2ea53ba33211ccd10027bcc984eda89aad3a5c78129055a955. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USUMV2400290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8092ce395d89a11783c39d0cd600621bfcd3142953ff011e0cc58ddc2221846. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USUG12400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1f50693c4a2a98250bf2584b042a342ce368039508fd58a7d29b30fdd1c4da. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USUG12401220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8092ce395d89a11783c39d0cd600621bfcd3142953ff011e0cc58ddc2221846. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USUG12400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7753f5a86b4c1de98864281b1ae2c3c82f84e57ba123a87fd8a0a59dea34fb6f. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/USUG12309642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa978afe03da1c61ab5e57427518512791d998d7f228b5a729be612307849d6ce. 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/USUG12407456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6c721081a13608d74dbb33658593b56a073efccc8e26675320f2ccbbc19c25. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUG12406472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3effccad605143bf544cebf3faa05a617731c0d67a3d1cceb4468e48ec6c598. 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/USUG12408084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa978afe03da1c61ab5e57427518512791d998d7f228b5a729be612307849d6ce. 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/USUG12407456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67ac79c8eb3e65c44e8305fa286d0e06fdc3a836efd27285598ee211247639c. 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/USUG12408086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaf5fc91706d033f4fb1b5bbda83ad2f27030257f9d64a137db6179e67dede4. 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/USUG12408083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84cb13c123117324af4e306333ed42e0e9c8b7610564988c82795b68573d97e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:30Z), 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/USUG12503819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f8317f1286bbf9e5ab259279b0d07fe04e2dc9aef344c1575f809ab4151000. 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/USA2P2329200.
Friend For Life (with Medium Build) (Stripped)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd989259dcdb93a88a96baffb1a7040175685e03154f118056c394f764d31bf. 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/USA2P2329201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65ffdd6c23e3c509d08e7e510279251af3b3a8fb62ce9219ec02af32da792ae. 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/QM4TW2459712.