John William Schlitt (born February 3, 1950) is an American singer, who was the lead singer of the Christian rock band Petra from 1986 until the band's retirement in early 2006. Prior to joining Petr
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 0xd58c3fd7738e3f622aeb791de291aa0c9035c4019698aebd13dbd33d9ad07a99. 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/d3002d8b-040e-4960-b07f-b67cc4db45af.json and https://artists.proofprofile.net/proofs/artist/d3002d8b-040e-4960-b07f-b67cc4db45af.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 0xd0421ab8d0deb7b481599b42225a84b7887401a70be782867ae88b6773b86abd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USWR61100814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532832d187a6915c25d7c68611a4affeb7160c38ddb3e64bf6cf66fe3629b539. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USWR61100816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7776c9e2f664bc2ce5f5c284ebdfa87089275142a40ce75bc75e180f2d25b29c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USWR61100817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc095b11968f41b5338a8f92919f9a4260fae3d88cea7e238218549f40de423f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USWR61100818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b0deeae41ea00758af2f481a2a07f5498eddc58cdabb1055406a1ca3913992. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/USWR61100819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50d573160e75d7fd4e8e7d2f17e901d55402c2c511dfb36a4f6a98c14eb3fb8. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USWR61100820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9981c92a0b24561a2f458bc97da333f4e77faece4839724e670ab43705282ba9. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USWR61100821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd609e82ad349d4fbee6bda2c78d5c2af3aa0d13808604c7017a372c39a780f79. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USWR61100822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4473b00d91a9e876515fbb6e6652d87cad33f3468aebde97671b5710b33f3082. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USWR61200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd2ca7dc0961a88cb16d3239258f6c56c19eb885a39f5fc2235c96112c2037a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USWR61200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aea87e23df62735d55b99e33e068a1fb811a76da2d6c60fa28d1e0af2724618. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMSJU1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a4adfcecaaecf19ceaeb3d77944ef06a507ace976fe220076f23a9b2bb55c6. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QMSJU1100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52170a067ef99bb658dc2a8d3a4ca70f56bb50bf6f651b88179e3538a8e4e054. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QMSJU1100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d99bc15fa5afaefa7e2662e84e1f83a734647c6405e93787e59e2ae423b037. 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/QZFZ22077621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba520a445e71367e5f3db70d0a600328702d61ced24bfc345037af09ce3b2ec. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZFZ22077623.