Ought may refer to: One of the English modal verbs One of the names for the number 0 in English Ought (band), a Montreal post-punk band on the Canadian Constellation Records The 2000s, also called the
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 0xe37a5e536d751db6eb250b4693d80b5e576bb923161361375b98f581047f2cdc. 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/be4ab5fb-fd31-468b-9c73-9930ad617e58.json and https://artists.proofprofile.net/proofs/artist/be4ab5fb-fd31-468b-9c73-9930ad617e58.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 0x650bc190a591bff6a420cb197aab076e9b991a978a1f88e05c3461c1b18d677c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CACQ21410301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd94eca96c6783727f46dca1f8cd4a1e09af5f4e708338d4c6322b56172a0ecf. 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/CACQ21410304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5ca1f113b72969efc5eabccd38d5eee16229f2498be3b37eab20ae841e2f10. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/CACQ21410306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc89b84b392f952c896a1cb0379c6868087017faeb200e16858885ce3e84540b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/CACQ21511502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad1a944d933db64d3032a26b33b6bf48b9a0dea8ff20f77e33ed7062306cec3. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/CACQ21511503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0044b6eccf5e1d585bc4123de19345a26e6303602a66e4261167d4519c26a8b6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CACQ21511504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13705e9b60079abe6c8d171defafe2cecf635cb5a36a1c6c8d0b426555cff72e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CACQ21511506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fc256aacd94e9b18a24031bbdd8f12e13a69d656dec3bffbd7d96acbcb8410. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CACQ21511507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5617a0e663dd5d61f2402501d65517e0889dfabe79532bc48f55fb1030b216. 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/CACQ21511508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd8f1521f47346cc172f32509b0576347c62126f30e7e79c58b2f5b6094a048. 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/USMRG1860801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08623aa57548e32735631d2b797450e46348fd2bfa910180d4079cdc2e07c0d. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USMRG1860802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1aa2d298091d53453fb17560efba0fb2ee27169b68e6a76947d25ce37406b9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USMRG1860803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c430f6b0648f590d45fc61f57df1899e37a895941df0091ba3dbd90e387c607. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USMRG1860806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4b128b5e480a9c0dc78cb574d7a39bc586efee07fbf6cda3363616403d28aa. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USMRG1860807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd296f1b1399d3938f7473c58a08ed2dca898a1037d4627e3189ec07e692f1d2f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USMRG1860809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2cec28fd8815f89ad2201a0ef43b4f30d5fb0dbfeee9109f0a4ea495a532b4. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/CAUM81800074.