Clifford may refer to: People Clifford (name), an English given name and surname, includes a list of people with that name William Kingdon Clifford Baron Clifford Baron Clifford of Chudleigh Baron de
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 0x36544b57a7ff3612cbea016a2ed8527f22a9a0d77b6cbf761aa3af53de3e4d97. 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/f1aaace7-da76-414a-a367-014c2806aa61.json and https://artists.proofprofile.net/proofs/artist/f1aaace7-da76-414a-a367-014c2806aa61.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 0x1ec11e739a41863a33aa22f61ae80c849dadf1ae43f4dc399456bb0d8758ddf2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USANG2189174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d3f5372e2457b179cf3c6d697de70e10e3fb57ff59759db1436b07b51556be. 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/QM3DF2113827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9294899d8217013baf727a698d262408475ecf888c134c0a0fff6ae34537b9e. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QM3DF2149797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536f91850c5d15dac210d352bba4ce74a6586ddf3f1d0879e07ae4f95bdf9af4. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QM3DF2154780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ce008d7b759ede0c1cc31ad51b74c64f57670c42da6174063eb9c3aa512fcb. 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/DEQ022280294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2510a736266676f2195800796afe810836620d41c44bda38a59cc1749bd87765. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US3DF2237732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6914e33c2cc066ac012863b454b4183bf56db641c293eb2012c5fb1dba2507d3. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/US3DF2245285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425b85108def23963245797e7a4b2255640248a87e7d3c9e92aeb680d3847d1c. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USANG2211754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd675cf39a26c5970114fead5eceaa0ea10507c4e6d7b353f3579a934e72b23d. 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/USANG2240660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa948b8072d95e6cdb30bd0ce3de495b0c2d71fbeda1590dbbeb6733187cd184. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USANG2253234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26768841ec5a26d80d0ec7d29b92d0ae7df7044db6870e094c25579d537efd33. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USANG2253238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637cd75ee701688de5d0fc7f850573b6ee230e17380adf4e2e464f2dcbb50865. 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/USANG2283744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a160007f582a763992f708bd5b2eb7c0a7b98ceb35764b97d26bdb9e5115c2. 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/NLX9G2300342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46693dd70b0f7ecbf5eb2e06abef9cde91ae0f8fe24c0d5da36d429df37a6d74. 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/QM3DF2278931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3222d4a4d195b91b325e96c02d8c75cdb56c68330df2774f14885f93bab6f3b. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QM3DF2278932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9436daf7f79315fc6ad760e22bec56f69dfd6656bd628f571bb53422147280fc. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QMANG2213257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b5bf3c6d0a344bb8cf8e15d9884bf5682d9295da0696107d6dc30244f102a9. 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/US3DF2468928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabae68b00760dff58e1b899edede7e732e6000693dbd89c02f9e1068ae8f844. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/USANG2403168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91dd673981eb3b5e15578bc2b3dfa05902e5773a7ef2503aab8edd15a92572eb. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QM3DF2412262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad6e891d4f0f8b2498d7bd878a1a6d6632c9211aaf7a5d8e9ce5f818e51d8b9. 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/QM3DF2418482.