Christopher Lee Rios Jr. (born November 15, 1993), known professionally as Chris Rivers and formerly Baby Pun, is an American rapper. He is the son of the late rapper Big Pun. Emerging from the underg
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 0x24e74b5231fc920d0099795b69834941d6211987914e04b7707d2b10d4458034. 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/e4a3785d-2318-4a4a-93cd-9467c58a3b10.json and https://artists.proofprofile.net/proofs/artist/e4a3785d-2318-4a4a-93cd-9467c58a3b10.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 0xc42e4425298557018d95c58a164248842884cb4650036a9e47f047e07154eb9b. 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/QZFYX2246960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f073a21977a2c897a9ac000524dd2d0a47221b923a89e1ea33bc41cc0952c8f. 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/ESA011766505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027e1b7ef3bc6022309e05912818f408545c5a8224ee49eddc679d2fbedd9d98. 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/ESA011766518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a809399e2a479e0e66f6f44b2594d743d060a70135b470816eb202e6425cb2. 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/TCACJ1538077.
Black Hearts (feat. Styles P & Whispers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb5d03b5d46e49359cbef9cb8dee9d7473443ea4d82fb078ba04ccc7ab52b8b. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/TCACJ1538108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3058e5cd2a2fea4b8572c46d5a38cdcaf7bac9698c5b695ec8cc9bb5cf14c1f. 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/QMZZK2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760e56d50e0eef3a17953c3bffe24c1f9db1eeff3ffe8a164405207907f5c27d. 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/QZQAY2418708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc0fce445639ad2b500b8e18f6ebc95a14806010d612957be42bc38cd6db53c. 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/TCAGW2379572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ff27032c2b5e943fef181ac2ef7163ab4f22e8939a00bfea1883218a85f499. 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/QZDA72271915.
Action Jaxon (from Welcome To Sudden Death)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16e10abf198f2dd6bceca5462bcd08787d96252acbe01a775b2849e0eec3667. 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/USQY51614114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493fd698fe497d37a312f42d574361c690228f2e187dddad8a918756c9b3f5b9. 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/DELJ81622177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7937d12dd6f86ad0e0b62cd5e8ae6bbcac1ac37482d9d2620fef7b014a4aae8b. 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/US92U1903818.
Roll Up (feat. Chris Rivers & Cris Streetz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fcdccf7adb78f1e09fd28e2982e372fb870506bc22dc133af984ba5e90d094. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USUYG1279905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4352dc23e949a1719da28fb1626852619e266beace118e1eb174f57e7fe6d7. 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/US6YF1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bbc9010249c354b786f79ec34ae723951112c8b3d3261abda0309cf1eb0337. 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/USQY51539093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480f20600b59c6f4cea7536449f3bd70d27ecb636c4b9c1a03fb044f3e1f8519. 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/USHKR0918415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18729c75dd4097224d9673c2ed9d9ddcdb0e3ff5ef5073bfbef3c84069626d1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAGY2325433.