John Robert Splithoff (born June 5, 1990) is an American singer-songwriter, multi-instrumentalist, and music producer from Chicago, based in Los Angeles. He released his debut studio album All In in 2
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 0xd8c761f275f2c6deb645f96f31deb0579a9a050e94834443db96026813f9b1fb. 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/b7cb217d-7163-4d67-af74-45b0bcea30e4.json and https://artists.proofprofile.net/proofs/artist/b7cb217d-7163-4d67-af74-45b0bcea30e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
February Song - Live with The Pitch Meeting Band
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 0x1b2f447b357f9978ee827fe8b4d383716bc0822eba72cd9953afb6b525a860d5. 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/USA2P2216799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2edf68793d2a2ad56da91bf6bd61f05722aac7e2c0c684f42e6ebe8be4ee159. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USA2P2216800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193b8051b2c7728576f0ef02410499d3e97fc6d08fb093fc3ae5f42db0449bc0. 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/USA2P2201287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab27929c1d635630c013215614aa950d55ee486040623e58b35b11899c514964. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USUG11903328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1a9fdd8a84bc1885c68fd0f7e27e387e6e5d08f65c4bce25ee20afc4ad2df6. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USUG11903330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86748d355bba939d0c260f0f10fdff5cc9c1965975f34213bbc80309b84c54cd. 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/USUG11902953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3019fe552ec363d79b2d47a1885f7889cca37f498c9cc9d9483fdd5eb3eaa98. 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/USUG11902954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3970d38d2d6276a079de0b6c73cb39722ea3012c22617f7434e463b88d7de6. 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/USUG11900713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd543347d2215ed822d45c8b0cabf19ad3109a8542f3b41d5835ee8df40da67d7. 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/QMEZE1948681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd543347d2215ed822d45c8b0cabf19ad3109a8542f3b41d5835ee8df40da67d7. 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/QMEZE1948681.