William Braunstein (born July 14, 1972), professionally known by his stage name Ill Bill, is an American rapper and record producer from Brooklyn, New York City. Having gained fame in the underground
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 0xc4efe2f3161cfe4de530953cad56c97501ea0da2f0007a7e0f8e8e7252c99498. 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/aefc7ee5-f3ba-467f-b2ab-0f545dabeb60.json and https://artists.proofprofile.net/proofs/artist/aefc7ee5-f3ba-467f-b2ab-0f545dabeb60.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 0x2ef8d06ff2997c0679dd017ff3d3979916af7ba4e293d7cee44465727d56b461. 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/US6680918834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43a8488439b017ba7ed03e844b551dc4b09a040bac563a6cc1716e126c77eda. 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/TCABS1321579.
14 Years of Halftime (feat. Riya & Q Unique)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6576d29952b08dd54b7f1fdb89627a00bbe4b65bea9bed05d69da3264ef68e13. 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/TCABS1321582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98c4b95cfca0f2d673efb2103d06e2ae25408b9df28f52c28b04b50e1aad014. 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/TCABS1321586.
L'amour East Redux (feat. Flatbush Zombies)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81d69787cf6838a476ccc050ef456bb63d349de390a5d1950e0d83538e322d6. 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/TCABS1321589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e32f7df4e7d73b4b7b0dc353559fc55c69ef590239107a4992e87ffccfa9ed. 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/TCABS1321590.
The Walking Dead (feat. Ruste Juxx, Guilty Simpson & Shabaam Sahdeeq)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7ce03aa1807d0f1171ba165e2541304905b26765fd3bba931a70ae0a3b606d. 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/TCABS1321595.
Golden Casket (feat. Vinnie Paz & King Syze)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc0c0045c99d7d385a2638545c6c46e0e82ec2b5c5c09f6a36da6df17207363. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCABS1321596.
Corrupt (feat. Trinity & Immortal Technique)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf998799776a64876e2529e3cdfe894c59b31f6066b39d4db6fd87a9aa3c120f1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCABS1321603.
Reel Wolf: The Underworld (feat. Tech N9ne, Vinnie Paz, Slaine, Army of the Pharaohs, D12, Goondox, King Gordy & Sid from Slipknot)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8779548e430be233383744dd8789d0d997630c0f15719317195e2530904bba5b. 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/TCABS1321605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7baeedf59f7fc5341c948dad8a8a0275ea564795fe602b6840dbe1f0aab77cf. 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/TCABS1321609.
Deadly Sins (feat. Vinnie Paz, Reef the Lost Cauze, King Magnetic & Doap Nixon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56028961b15ed5e2da4c55d2448b7a8052422b9542a02d121a7d34e4f0b9b86. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/TCABS1321584.
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 0xb8e03b70a3c30d02f0b6b4047add6cc17aa2ff453470fc251bb0889ed3ec2655. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TCABS1321583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddba4d00362b44edd18df7c7ce24269e5b08cbe9223b4680aaf0ed5d3ca3b28b. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/TCABS1321587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9223f3f4fdc6c18252610054d507327ab4a72848f788158d5521c8ddc28e3d49. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/TCABS1321597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ad21edaeb70a6154ebf297d5fd324e2c8358147381c9c770d28031e265bff3. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TCABS1321598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de3de0098a79d06876e807954be7f371a6b3bdfed0f1754eae4dc01b7a00a48. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TCABS1321599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0155b895af568b3d53a164355d91f7e43ac4693450a0e698c5305f7c435e70. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TCABS1321600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f114ad72714ea475fef774706d657fa73adf4f5090d55765b7319b1ca02136. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/TCABS1321602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50da524b02351072f1b722263c0055938dc784b622bef592799dca2aa748db27. 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/QZRP52159082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b6ab8dee6030b6fce26829c4d7f37724f166d3ce83b82978425555b223afd8. 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/DELJ81622191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13752e842c113f975629e5b411b5d2acd85e5bc1d14a84c31ef92395e352c4e5. 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/US6YF2000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78aa41bab8932fc77f2ae3d70d6baaf5c16b29961febcb086d29dbdb8e7f6b8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAAS1042236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefc933537640b23bb1e8a16ad4c4d8846b7b5c5010a891113b16d41bde9f283. 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/QM6XS2200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239e853e7b5d9ec7efdbd1e225c368a2879507403019d5545ee3cf76ba6ddec5. 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/QMFMF1468190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215998d14cc58624265502b43516489760db9f9e6264852db38ee32797bdbd51. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USA2P1255425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5623125cd24e1109442da4291e153daf1daf1c6d5aae55ef14c24cd8ba197fb. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FR6V80920159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc23b38e882a824503a70833476627d33e84b08b6ee7d67532ff9d3afeeb93c6. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USS1N1129117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b540dfe8e04fe5bcf89ee48a4054a3f9ad0e6574dcada30280d922e4461921. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/US92U1910413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978a6b7b227f9240a11419188f588316f337779c4f6373328a1dae9438cbd572. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/US92U1910414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661690223824ffa2622c0e059261e1b2cb30da96584585626c530b792559548b. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/US6680917019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a84b6d46941a4182f25ac5996ff06631b2fbf46e23fe49dc02d7ca3e704f47c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US6680918646.