David Mauricio Rivera (born September 16, 1965) is an American politician from Florida. He was a member of the Florida House of Representatives from 2002 to 2010 and a member of the U.S. House of Repr
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8f145db428ba40bfaf08fcdca10457c66c48bcedd0caff77ed0675e345441d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d25e23a-9794-45de-a3a2-fe01b72c2479.json and https://artists.proofprofile.net/proofs/artist/2d25e23a-9794-45de-a3a2-fe01b72c2479.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018b4ad30331f2a2c97e20f3f876d7eccc990ab2077d1782979569d6ea6e61ea. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/TCAFM2138556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93815a7b4581e49d9a625cf9bf686896b89d4f150174dd2ae482b1f29f2ac609. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZK6K2312562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c66ec4fbd53ca3679e317f1e02657c993eb281c761d878be90b4f56ddbc012. 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/QZK6K2312563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c19e03eca7cb78f06c46ef18ebf81b6478f0a3ead78df212cd5a7c400ca6d8. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:36:45Z), 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/QZK6K2312564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d909c35812fd8bb21cddf17b7d21545d0aed2393b3c1e096bab00b940a5cf0a. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:49:32Z), 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/QZK6K2312565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a7918937eafff676e42d8b868d89f93ddb3f6121a15351e410ede37482881d. 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/QZK6K2312566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c27358e92a57d1c61415938f882d6e169b68058b418589d573bb4296a1d851. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:07:07Z), 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/QZK6K2312567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4eb228632254093531b756701d843c4ff59271114ad5dd19cc8e6336028b54. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6K2322199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a5a622013f5281f4d1d66cd3afd21c55379eac819514aab8b2c70f9f3e271b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6K2322200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e5ba0c062081212d213292fb900cd49556d811b58c87147bce10a20ee927ed. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTRX2435188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd69cb43bf5768f350034648806fb9cd8375cb9f91351fef57c7dc4ccecaed7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTRX2435635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd29b766208868086ba735a89d44cf61818784a4b6fcc3b6dcffb04ed08b2560. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZTV32572517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b5ad75a14079df74c5fd6cf47bfcd06cfd23f20200b7edb1e4f5a3239f9387. 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/QZTV32572539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1741fb4e41e836ebc61e990e3b36c7f4d6d829ad858468a5b4e6d8b5285d66. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWDE2536405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32561ab374fa124ba55bb2ecb5c8e8b1773e2589171601f01d02615ef8edddf7. 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/QZWDE2536414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5589d7a0905811cfe8e4978d81e1e79cb737ed841dc355c00d204a6d4aaf3b98. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:44:33Z), 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/QZWDE2536429.