Caps are flat headgear. Caps or CAPS may also refer to: Science and technology Computing CESG Assisted Products Service, provided by the U.K. Government Communications Headquarters Composite Appli
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 0x8371a85623d3cbaeb312900747aae54fe7ebb447abe98b08c112d8712af8ec21. 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/4cf2aa94-80a9-4c87-b9ce-902ca848a76c.json and https://artists.proofprofile.net/proofs/artist/4cf2aa94-80a9-4c87-b9ce-902ca848a76c.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 0xe9e79d22bd86436299e62ce89095911d539b92a9bc8f91b454e150a1db711d9b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZC62436174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d91736b8504d1f2ad616cce8495a458b333c8a820d52208b1e19a589a7e081. 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/DEZC62436175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382cc81a4b7f62f33d8bd47651119223e522cf1a0670fd6d81c0345c3ec25549. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZC62436176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1948bffb057d06e0609c517940ea73435c26ef3688087e5c57c3e0cd0d59bb71. 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/DEZC62436177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda94040265c624131c416b6f2fca2d7225cb7ee2867e1a3f7ddba4b28c94f796. 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/DEZC62436178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2613c8e2af5846e23995060d419ad55ebcd2d232059b172818f2d59611313347. 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/DEZC62436179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468abf911ae852f95bdf9c4a811190d9659bcf2727115d0fa605e8f41e3431b2. 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/DEZC62436180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd364c47a1719cd25750fac86afe93bc09f4007b36db341d20cd564eec4ee34dc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZC62436181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d7c5bfc1c7cf771ed9876c07c46bece81066cc9f6a119ffef30b67f729ef05. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZC62436182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8280ac43173ffdc38fe3dee24e9e581d0ad8595f1ac11bc3bc40e6f9f146b6. 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/DEZC62436183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186e2ee8923efe754bd5d2fddae7d353d4da8440a7b4cbaf59dcfd39af4c5881. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZC62436184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1e482e1f3a575abc3ec9522621d92a7394ff874ee33457d644c0cdd0b31366. 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/DEZC62436185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ece4cad3970add172afb1e7c4f355c540dc48f672d6ea37258c5773d2313dc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZC62436186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf144ae26eeed75324393fb4dd5c3d1f1a519a6faf3c90a2185f10fa94c247674. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZC62436187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d657828cfa4429d0a783816ffc6485469b703a16ea2de2bfb695cb3eb38b91. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEZC62449232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99986e9ae8afb00d55785097035431c8465b4d78fe751229201e1fada402a4c9. 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/DEZC62449233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515866a43a665d50d2183a8b39772a74f5c9e0e94367fae372836f7423b2d6d6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZC62417305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9695363535d754af5962710fea5087e7b99295d2d9db75ab65b1cb79687e87dd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZC62446194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06cb39f38702ef6ea6fb2ee8a8c6f9a4f7f5b4f5d017ab08842fab3a86a79eb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZC62440014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f094beac62c9d3f60ff226739f5510d9ed599261a9cad4259d718e47e69c12. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZC62433367.