Cella Dwellas are an underground hip hop duo from Flatbush, Brooklyn, consisting of emcees UG and Phantasm. The group is largely known for their dark beats and lyricism. In 1997, the duo shortened the
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 0x4bde6729e342e801e5b469bf8d2aaef28865375c5106725b2894999db87cdd63. 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/77644a71-c848-410d-b83b-63a85d5a10f9.json and https://artists.proofprofile.net/proofs/artist/77644a71-c848-410d-b83b-63a85d5a10f9.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 0xa3109221477e87d48ad4fd653ea81b30ad065d7857afc395d5b3ee2fe6756a28. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/USRC19503027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466ee8c7a9b7f6fa4f848b92645176c61c9debbdbfafb5525ed3c0868fdda2f5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USRC19503028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5497141c2eaf08d74a00d83f513f77b599ed9cd228a34a2405292a325e840c09. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/USRC19503030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69eb61f8ad4ae92df998d6355c123db623aa753333b50cabd05d6eb3b5955634. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/USRC19503031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74de55eb692ac7c57366163287eb642259347612621ad8b46bccf67e4c8a075. 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/USRC19503032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0a37292b03f996333353eb27f4e0ecd225a7103ddd37f9e275d1859bce0270. 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/USRC19503033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2c948089314b50bdd77c1da7ae6621f587d150d600ce470728bf0d9aeef296. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USRC19401217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024d20cb21ac1f8d5ca99237af7612d477962aaf990dde20174c621173e28fd7. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/USRC19503034.
Hip Hop 100 Hits - Urban rap & R n B anthems inc. Jay Z, A$ap Rocky, Wu-Tang Clan & Nas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b990180ee193e59324a1c9734b997860b42ffa70a8ee468759a0f310df03365. 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/USRC19503025.
Nick Wiz Presents: Cellar Sounds, Vol. 4: 1992-1998
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d8065b3f44b6530498dd9a50093ed1315c03ce4da9afe782b0a4c25f45d6c7. 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/QMBZ91510875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc911656672c1fd21c8502e1e3e672363b84fd8580e18bbe30dc176827a36fc07. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QMBZ91510900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdac5a2a33b7e6e7b2dbef979ed65d0f62273d536ba64f10e48216f75f88e10. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FR8GV1832310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd450bc2fb7ae1a4e1caad26f0dd54d5a79a4afd5704fd925425c704dee4ac72c. 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/QZFAJ1850010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a4ad07d7ba5b6d712bd11f3341e584943ebc5d3018a1d5df3930c323882b40. 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/GBVW22000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc75395a9909e1d094f0861873e48d61f237888b30f8a869c72951eb2897235. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZ8LD1713064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261d93fae33da78774d29a580e0c5a4b7ce45380338712293c5439d3eb2636cf. 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/QZNJX2068331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1556447d09b7d1438752ae510dd2d71b7df1ed5cf02690d049722e5aa66b50b. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USA371108902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38494664c9be189cadd075f4a4baa7cf1d39081aa82dc8a91ed34d0c277808f8. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USA371108905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77f7cb16ae82df75960f8f14cbe482a926a1ed588cd2e662a26d68295455072. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/FR8GV1832360.