504 Boyz were an American hip hop group from New Orleans, Louisiana, named for the New Orleans area code. The original 504 Boyz, Master P (as "Nino Brown"), Mystikal (as "G. Money"), Silkk the Shocke
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 0x100527c144c9ece7431672a8fa67d277ba61a34486d65bbef1bc22fcd412d6e7. 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/cb1ef12c-714d-45e7-9842-443efc1ca1b1.json and https://artists.proofprofile.net/proofs/artist/cb1ef12c-714d-45e7-9842-443efc1ca1b1.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 0xfa05a472a9dadf84750eeb3228efdf918e8aefab60b6310d28cafd14f42a02b0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR1981996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa081ae025b83e99d20388fb4717aa7ab06ccd6973859793dfce521e106c72cba. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USPO10700348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1110f4b7f6881ce4ac5b95f6e50a0f37085749ddf101da7f19835acc68d8bf. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/USPO10700353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb613fce68ea8f9ce1301abfb5088ebb71f2eb3f450646ada1360bd79b9f171de. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USPO10700362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f96e7beda3e0ce1a1abb3e419bfda9c48199cf73176e4ee1589ac4ab9ebdf49. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/USPO10700367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe30b9e4b51229886e8d550ff5f92aff842e64e664ee1959a2454b495d1672c5. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/USNL80200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf916b646adbfc7112742f20cd1cbf980b945e0254f42891b43a4ef5265d68ae. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/USNL80200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d909ed636df154726ee474a009bd7855c39db084c08dfbc20d710c5adaddbe4. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USNL80200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a3273ce771609715013eaff1fdc804b1fdef1c130fd9838deb2688b74da6fb. 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/CA5KR2265547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac9ecbc00dbc14b1618430ddd131f407b021bed882b5e53906d93d8420d7b82. 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/CA5KR2265548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6ff40ed16e2f215c8a4d8cb07ba2c882dcee7dc6517a092df144f39bf255d8. 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/USNL80200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f142e95c2e155167f5aa3608d6f5758fcace70fded114ced43738201a5e12c8. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USNL10000972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f142e95c2e155167f5aa3608d6f5758fcace70fded114ced43738201a5e12c8. 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/USNL10000972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e662f4ab9815a887aac9ac8b3d27120b1c2e0125ca0674459f0669819dd0a5. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CA5KR2265543.
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 0x79ebe122d39bae607b22729a92a58fd670775a372390c15b1c21f2863b936817. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/CA5KR2265549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3788409518f7515f79620bbcbe71df30a57ff3327dd1680cc5c103c7c4842b7d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/PYC842403919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d85e300e56b608866be796bd0c47359dbda49fc5e9a0043686236ae6fdea019. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USPO10700354.