Ignacio Ruiz (born 15 March 1948) is an Argentine rower. He competed at the 1972 Summer Olympics and the 1976 Summer Olympics. References External links Category:1948 births Category:Living peopl
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 0x548e6771ae76713d541dccd1ca6604408360715a889d7b9f0cc664b5a1b04d8d. 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/f19e568b-a9c5-4518-929f-f82b759e88dd.json and https://artists.proofprofile.net/proofs/artist/f19e568b-a9c5-4518-929f-f82b759e88dd.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 0xcb0438e9c633bf6ea44d854861509750aef6f25e019f0f21d8271dc46a4edbff. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHZ52223504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833e2b9e1811d658eb2005659f1d755cb74c92898a80f79eb397a22c1ebf7204. 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/QZHZ52251531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214c10accff6b3bab8e7137456457b24c9d5caf8fb13f2776e7986ae1a812daf. 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/QZHZ62261712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4c309e1e75cfcdafb4ba808858083934a94cf5240c8fd792f1ee01aae42ebb. 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/QZNJX2290402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6858a010bcf1cd35d82722e7d1c05ac8157abc55727b6e3ad7e96ef25e62155a. 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/QZW9K2203616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddb394f3974114f44e946cae0850f94549d0e34336f964d60695a5359e6cb87. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/US7VG2347707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f381d52462f2ddd46e76e349b82db0db57092490cea0b99c71fa112cac3fdf. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/US7VG2347708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f90c838a52696f84222d6434c07a134d01db263bec9b1242d62766f78d919bc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZGLS2393696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9f8d9e5507435296b68af58f77296d32c7750391371751a2b27d89978d061d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNJY2366066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3990ddae546e2c1381350de1e96f1a1f5578e9ba8c08eb13b608237a8feffe03. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZGLM2406445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625dc8181dfb1f4eae8e3004962bb86185acb19d28432cd4b6381f860e8df2f0. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZGLM2406446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1633f998b8e00b6f486126ded68c9cb0d08bf99b1c2ffd7c7ebd6be558a259c0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CLA672400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7653458b5b41c0a371f4cb9117f4aceae7629d72e200a279a239f9ac9e578f. 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/CLA672500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04192e84ea318f426dc46156d968034ccfbcf7368b6046013c1b1735f44ee21. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USA2P2444268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d77e189692a8c537e21bcd088dcd36dd8c6d03f9d4f16073935430b85e3c2c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CLA672500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059edd08882946f6e61339aff16c8746f91573add7fd8072802b5537c307b8ac. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/CLA672400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c1c320f3f0f816e212f314ce3c5c7e97e6d0ae5b8d6c3c5b6c8b97edf30d2d. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/CLA672500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359f05e7e13b0f3dd513e77352c10544fcaf0e584367ac6d77662bae8f945cbc. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/CLA672400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5014eadf88c880c3b7fcbe756208dc898852778e3f1f0f44bfbcfd698224d3. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/CLA672500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1633f998b8e00b6f486126ded68c9cb0d08bf99b1c2ffd7c7ebd6be558a259c0. 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/CLA672400003.