Christopher Cargo (born 18 February 1986) is an Irish field hockey player who plays as a forward or midfielder for English club Hampstead & Westminster. He scored 28 goals in 195 matches from 2009 to
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 0x50ed0f8284edcc8132a2b888eb129c58aa7ffa5b66beeafbf1d801ae4a5b8dc1. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d185271a-e447-45fd-89fe-d687853352eb.json and https://artists.proofprofile.net/proofs/artist/d185271a-e447-45fd-89fe-d687853352eb.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 0xb497061c5cb00fd69df2812a4e5239c05660bfdca5fc506e016f0ce0d6884c96. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US83Z2003598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1768263839da08832c9cb994863f3d112d327cc7f79cec872ce6a816bc9540e0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US83Z2487934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5998f80e1f3c54396e1a92163b920a19e832d37429f5708411f8185948ef6e. 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/US83Z2309671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f2e4c939698d1d836d075b33da07c9f6a2760e4de78cceb23faaeaa1f9e7aa. 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/US83Z2491720.
Electrique Boutique (Compiled and Mixed by Steve Marx)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6af3724b934b004aa8bd917ef24af39f7d7cb146980870e80a62236f99d748b. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GB5ML2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f363a0a85d3830a892a18491bd2bd4e2afc8213ad437b47664b3ac773494d2d. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/US83Z2504731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393f9a07cd1f00e2f8cf8a602b220240fbf15db7dfaf40e735edeec5eae83a56. 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/US83Z2504732.
Arya Remixes by Chris Cargo & Rocío Laurenza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78a6f78958f0e01db60ed73a3da93991e3e812b30d83ceb8c83fbc5604e2470. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/NLD682400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7002a607f5e021551c69027ae68660290ac711b6b04609860ded2ed998938b54. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GB5ML2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9d9d46f29ca1f4fa3f233efbffa5678e049e25277758806e2309179eaf84e6. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/US83Z2317159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05a4697499a5433cfcfb4ad9e4e199de44995adaacd3c1be39397de80cde886. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DECH62001208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e8c00fa315a0b4cc337f13826f2660f289c5eeccbefb0d0c017b32544881dc. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/US83Z2222036.
FSOE 847 - Future Sound Of Egypt Episode 847
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b62782ff43faac48a76c974588f373a9a8892cabc5d9f5e3800d664bbc5579. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/UKRMQ2400255.