Mitch King (born May 5, 1986) is an American former professional football player who was a defensive end in the National Football League (NFL). He played college football for the Iowa Hawkeyes and was
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 0xec340ea4680eae1da1cacbe0285c31fe3208a679865b6737ad765ac73e6f22d6. 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/cff106b5-d70f-43c7-81d3-b7fedb2e28ec.json and https://artists.proofprofile.net/proofs/artist/cff106b5-d70f-43c7-81d3-b7fedb2e28ec.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 0xf39e51b9458060630054888dc9b107763d8dd0acf39718e59c0db32ec45c4ad2. 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/AUVOE1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad90d2bdb3588acff0df50c2a0e9eafba4d75ca824e064236d903553d66a4f6. 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/AUVOE1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b975b5c6cb32ec4ebd66bc93de20dbd3b591dfb8754bbbc36d1c41485b66be. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUVOE1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b1c63af4dc0b0d372e556be2944704a3ebcc72d5f04c9212e0a482463e1ad0. 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/AUVOE1400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff1c708452f0a0d6cfecb0ec1eed85d4f5b16326dfae72e0868120691dffa39. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/AUVOE1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2c8f8aa5a9171e88c980391416826f456f8b4fee2d0cbde962d0e693f80d91. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/AUVOE1600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec4e61c1b251bb3cba7cb6d501388de237ee8b51e364693a3b26bef1d0489cd. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/AUVOE1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3aae666d6b77f34e6876c5da9ff4d29bf4537847c5d7dfcad1b2a7fdbc4075. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:32:52Z), 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/AUVOE1600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9973f430df6ac96ce655ec625da866c034b8a4d8a6a2fc0b3950208a44df93. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUVOE2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bf82965f03b5da60192077f9d1958dcba9f43807692c7123e3092fdd3f373c. 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/AUVOE2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69288058e4de926c85261d0c0aad0e3d3757b72555422253eae15f5082a75a8b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUVOE2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9973f430df6ac96ce655ec625da866c034b8a4d8a6a2fc0b3950208a44df93. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AUVOE2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bf82965f03b5da60192077f9d1958dcba9f43807692c7123e3092fdd3f373c. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:30:57Z), 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/AUVOE2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69288058e4de926c85261d0c0aad0e3d3757b72555422253eae15f5082a75a8b. 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/AUVOE2400021.