Two-9 is an American hip hop collective from the East side of Atlanta, Georgia. The collective currently houses Key!, Curtis Williams, Jace, CeeJ, Cartier Dave (f/k/a Dav E), Lightskin Mac11 and DJ Os
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 0xd2a754892a245b0268491f42fc3fd088af144c84113a83af2a4e6a9fa5f2bd4b. 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/15006667-6480-4b7a-be2f-28d79ee69cf1.json and https://artists.proofprofile.net/proofs/artist/15006667-6480-4b7a-be2f-28d79ee69cf1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Where the Money at? (feat. Curtis Williams & Jace)
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 0x77fd0016756ddbcfa4f4e43ce09cd9247841216ec6955cd22a221e0698271a01. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCABN1314202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d396a18d376c8f22b78e4cced44689dce6075b685856a4064e35f8e26993af. 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/USUYG1072994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64aeee4aa94162f24595933a00cd9ddedcaa49044fabcb334a9c418d0039abfb. 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/USUYG1072997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0dd0269ce6a35e9fb880f048a1119dfaaa71effae7bbd0aff3a53bcb2c39935. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USUYG1073001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9926eedf5623423f75f402f6055bc368d14c6192c5a33a59759728092d19a6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USUM71700739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088653f103dc27823358caf0063c8ad161c6458dd133728eb25ba131d439de5a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUYG1288689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb41632c9b29948375eeabc0473b5115f901054f9f86d026157085eaabb8d7f. 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/CALVP1959768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1ea864a7110b651da75cb126ef94234d365075fc10e8a0c146979dd296aedf. 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/CALVP1959780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21930924d3115084f4d6d36e1b5584c46f11c99ae4320b24ad278ed895103461. 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/CALVP1959775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112832c0c94deaa2041fe7f6a5cac29874c1f5b3e8ee23c01fd1cea2eb66750b. 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/CALVP1959769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcfe1b4f8d3890b8b3540f99f8394945ffbbe7e0dffc56131edc8f519adfe5a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USUYG1288726.
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 0x18ea8480ebd9acbb87fe9c681ce39436da96d09ac78d4371e482a30cc25709d3. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/CALVP1959777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bcd73bec21043c30f2e413c47382c2cb4733d464a6d91ef0eaf77357c93635. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/CALVP1959776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f8d669004d20ee7cabf2bf057dd902b1c5cd62aee26f36c6868bb2642f2c1e. 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/CALVP1959770.