Nucleus (: nuclei) is a Latin word for the seed inside a fruit. It most often refers to: Atomic nucleus, the very dense central region of an atom Cell nucleus, a central organelle of a eukaryotic ce
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 0x4e92e0f2d3f442c03ceb72dcdf23d2be6fc6ed56f2780701e01f5d90376d9ce6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3ece435-ad0e-421f-9b42-e53f3a728a41.json and https://artists.proofprofile.net/proofs/artist/d3ece435-ad0e-421f-9b42-e53f3a728a41.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 0x7965ee5a26d73c571dbe3716ab364d3d2d5188510bf7d830f42b60a50ec4a6fa. 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/GBF080500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001a848ac1a074418355b0206128496d033fa8c6b5b3bb07f2e75d409b771ebe. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/GBUM70711975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b070e46880c3fa617e8408b7a305012df5c76ad13d960ad72f7193d5eb2db71. 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/GBUM70711978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf0cfd06f0d563efb80f5fe5bc9375e61f420bb31bc31210b89a99a10552e9e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GBUM70711976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2297ddeb2d5e0b88258540e06331ba659ec4bd0f4b61951672864393c4514b85. 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/GBUM70711962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fae025df7f1389eba94cf568763a614f5009ade56966479b0f97e8305d551e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBUM70711971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd000f52474959353361747e6d8522e0b6a3dc83b85f0bb03db8a19921aace0. 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/GBUM70711974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916413131f2eb839d2a3b4d661c178434b891bce328e6f1864e640d20ef550f4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBUM70711964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ac2194e8bc94ee460927811a6488df2068315c80426fd2551f2faf81fcf223. 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/GBUM70711965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2d8be3d8ff7f05ba6c99353788ea58ef7209a8afb4ab6d5bc465d8fc95f8bd. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/GBUM70711963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75646133f6ff5411cd48dc2084da95d051675e9135b892dfb03628fbd5374018. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBUM70711973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f385df093c91d6b18a685af29a4879b7eec245fe41efe26c6019cac1c0ef2e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBUM70711970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb89fca7a91cdfdf1d1fb6373ae6b679826a932eafb3726b211def2cdf97b77. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GBUM70711966.
Speaking For Myself, Personally, In My Own Opinion, I Think...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5495c1e4fb91b118acd6fefafe28148fff69df061ecc9ed1f88544c2b0e4d077. 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/GBUM70711969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043c06f454441776fffec3a7457e4e14ff6d64edd93d1ab72ee2a7740bcff1c2. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/GBUM70711968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2702103530f4b1362f636946daffdc7c881fc88b007c222445ac3b76d87f7423. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/GBUM70801393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdada2f4b84a0485a6a8d1f0957b6f9bcf6988e7fcc1131ef9dd512161a32b251. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/GBUM70801395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28719083fe6e45a9a43fa4814918d6f6d0386aaa15e14df09d5df07acdfb7fb9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/GBUM71807530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f56eaec4f72b150c33fd83337e6f85f7bb0e067621c76d29e1003d7b028b98c. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/GBUM71807531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce923e38403ca2520f4777f3257ddf08e17babc2b8067688bbf966e7dc1db492. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBUM71807532.