C-Note may refer to: C-Note (album), an album by the musician Prince C-Note (band), an Orlando boy band C-Note (rapper), an American rapper C-note (bill), slang for the United States one-hundred-d
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 0x9286a86ca72fa5bb3a75fbe8b6480c790cb2f9dc8b5aea16fb83879d6560a248. 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/c83728af-45f6-43cd-b726-724808043574.json and https://artists.proofprofile.net/proofs/artist/c83728af-45f6-43cd-b726-724808043574.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 0x02d93fab09311aed24ab5876f194098d34ebae192fdba6d92a1841b4087bec96. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USUYG1094881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe3faf1ef7798fa01cd031f10c23780cdd960b908b471145c2606a1e15a0d65. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USUYG1094882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ba4eeb0f024188331c44b53f7ae72e7eeef67add063d839c115bb50940e726. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USUYG1094883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ffdea8e93431a355c2d9e75beabebe3de3b7089c78ca9cb3f9eaa9d071e9bb. 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/USUYG1094884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe946a1736c44f150913c24daaf5fae58cb48ac76c8f47311ab2fe9e193a5d9f9. 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/USUYG1094885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7738e04410a17ab2a6dea37335e29128f468c015d539919f08fe969932c61bce. 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/USUYG1094886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984f34e58ab8a8ebe2e149d1f211d5085c5764e1d14c39bbadceada7dc7d4a20. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USUYG1094887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e36686d7f5029379ac6f27cc7327945a8382933648543b41c74d3a1255375c. 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/USUYG1094888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993061c8249c85220ca86a2dd61fcd84b6486e76de19a28127ffe33844f46732. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USUYG1094889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd6d692bd57d081eb694ee0aff53a84306c2c71e4a16a90629f9d411e95608d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USUYG1094890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd42fbff8777bf336a34aeaec402d1a65444c00ccacd4054d41cff909c6ce690. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USUYG1094891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a0df8b1770a90958fe2be7d208f1eddf05c24fc6544a7666da9119963a7a75. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USUYG1094892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b316dc63f935b24f9a7921b5961b76642097bef6fbe9a09b64e05a3057f4fc. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USUYG1094893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21e8d0ea3cd0ebc6a56cc0534ead7d273c12f95d52927f3c3e7baa90ccb3616. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUYG1094894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaba9e38b92fe116fbbe0d1c161249a745611adfd5b780a3963b3426e684c87d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USUYG1094895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c015efc8b7dfb922dd0c237042e84c0138bffbcea16aea30d5e9a6e6606ead. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USUYG1094896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a67ee815d4092410f983938541017153489165a880cfb1203ed7723a1f71f17. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USUYG1094897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8185fec01d3d4d6803ee51275ed8e1740817c93b07dbc15137f4b44f8672ca7d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USUYG1094898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5340bc17588a713725f7d7ca1797ba100b345831afd66bb0c31ca4cd168827a2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMDUN1300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa94d23e36a70507298cb6213a6a8e404db37e097d2f18234f25afed365034fd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM90745483.