Horace Brown may refer to: Horace Tabberer Brown (1848–1925), British brewer and chemist Horace Brown (musician), American singer Horace Brown (footballer) (1860–?), English footballer
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 0xbfb413ab9754c397d9843933a7e7953a520e610c29ecedcac3aafb4f56f7875d. 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/dc601a81-453e-4ccf-8664-d174f9ef0518.json and https://artists.proofprofile.net/proofs/artist/dc601a81-453e-4ccf-8664-d174f9ef0518.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 0x4d3878c369da448e32bec734857c166eb5bbfe1190dbc270cfdb9a8364b8b991. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USMO19682872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df0fa7950d7edfa7c8665e380ca81648129e77ffa5555a2236edbfefb32126b. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USMO19682871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa55d40198b3ff7216bef726c367fb66a819ccceea6884e40d6db9b02534432b. 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/USMC19444414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7381c4e4a54614c1d349650306550693f318b55f1ffc846be20007bccebd06e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USMC19443682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6e73a1a80321c729fa5d977b7580faf04ef3ebdd74e7e2545cf4debf9c046f. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/USMC19544302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3129cb1b0d55288a473fb4fc81d715966fa55ab56c87ae309fb67d74144476ed. 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/USMO19682877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3878c369da448e32bec734857c166eb5bbfe1190dbc270cfdb9a8364b8b991. 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/USMO19682872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df0fa7950d7edfa7c8665e380ca81648129e77ffa5555a2236edbfefb32126b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USMO19682871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce64d00f0711de5c1f2b0509aa3f04e58dc1c711776f8c5d6bcac8157f07bc4. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USMO19682868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65f4f98280f40a749a09d47fbda9ca773e3eaee146337d8284254f375bcba46. 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/USMO19682870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7381c4e4a54614c1d349650306550693f318b55f1ffc846be20007bccebd06e. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USMC19443682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd218b815b67105eacec68db855dc577b14fb7b0092ca47c727db3c6a3b145171. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR6V80853949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f30e4d10498668ee8f8327c2cfa457f2d39232e19bb212cdb92dfb13eded9a0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR8GV1714200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad4c0b0ee9fe83a33ed1c096ba91ef50ce89abca6e08c6089d4ce127045dedb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR8GV1714230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa622d2ac3a996209c731fe6c884b5e2b09a67e56131938209ea106a37d8a7984. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR8GV1714460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d501291d668e5cf39743429c84688d3aca247463cf2766ee763c4115e451fe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80834392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f30e4d10498668ee8f8327c2cfa457f2d39232e19bb212cdb92dfb13eded9a0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR8GV1714200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e416813831047048ce4cd1210c8e13915ce72d637fb12a6d8120ed64654120a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR8GV1825850.