Christopher Juel Barriere (July 11, 1972 – November 10, 2016), professionally known as 3-2, was an American rapper and a member of southern hip hop groups Convicts, Blac Monks, Southside Playaz and Sc
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 0x0e6c21f9f56cce32308adff882ad38245b164551bb11649e344ee291d1b8d93d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef9c6b87-7028-4f71-87b6-a272474db6e1.json and https://artists.proofprofile.net/proofs/artist/ef9c6b87-7028-4f71-87b6-a272474db6e1.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 0x5b2b4125687f2c5a477b70d4fa7194d4fb17570151ae39e7e3dc973b42461e51. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USXQS1618243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bf7d0fe9d98d6e04b5d6530c45b5d61c19ab56e0f57b7d93d8c4fe059b1e13. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:13:05Z), 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/USXQS1618244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba1fb9c4f17a2cb495ebd97be1fcbab246f56d031570270cc01af54ac91c7cf. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:54:17Z), 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/USXQS1618245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e34cf361094d3db4f07384e8f570ffcea4e2d17586b0d48faeee3b212d4f56. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:36Z), 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/USXQS1618248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b64a69957dc18903de95105640f02d08f98121d89366cbf18f49e15c2160d89. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/USXQS1618250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14953708caed570b18683b4dcc6afbfd0af7dac2533e9b3f576b0ee1d3c75e4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USXQS1618251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2b7fa0c12a234544e5e7c13a73e9965510b49e449474f5c00c1acb2a52b88f. 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/USCGJ0633722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8eeaf94746cb95ded6a5c5b61f319e066c0d4766fdf4dce4be7e0dc22ba3d9. 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/USCGJ0633724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5814447bca9dc0936d2aedb46371edf8930906476002841dcd733681c42801. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USCGJ0633727.
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 0x5a8701bfb8c70680e0947e8444109b37f47c190b28e3d2ebcc49d93d5ab8613e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USCGJ0633728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304431889567c579d04547249689113f6d5109a84c40b53fda58191c948e6697. 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/USHM90785344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953b09a4bf2499f5b996a503cf3fa7ff3d3b2b3baa6912f687d588c3ccbc92ad. 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/USHM90745484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bb3070ccea3ee454a7ff9893601cbcbf7c43a116e14e8ac118f70b91ce00ba. 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/USHM90745499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589a9727f35edfd4b40bdc460faf03413394f8b39e887240f9c99fd5b4863769. 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/USQY50916458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918cfe25ba6518c3f39c1d2bdde4ee76614566653125667c00b0cb7d958d25fe. 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/USQY50914090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a5e70047adcc72d828c793518d2d8cbe9878fa5f87ec4dc87a3cdcb44e3117. 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/USXQS1306485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb48101ca8be563e9bd6ddd4d54bf663284ee5b819cad35b9afc7e869c42de4. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USQY50916381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ef07b6dc9c164a6dc7f0ef6c09cefbb566b441018c465e41f0d9d7aab737ee. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USHM90643323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9ef767e2330c7ce39d448b09a17c830d7dc36384d2c0fc53d7194dc083cfab. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USBWQ0710059.