The Sanni () are mentioned by Strabo (1st century BC/1st century AD), Pliny the Elder (1st century AD) and Arrian (2nd century AD) as a people settling near Trebizond (in today's Turkish Black Sea R
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 0xfafabbb911d6acd6c3904241c59c70fdcb87eb73ad57bc313a1bdb8385035ba7. 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/73e0078d-050f-4f75-940d-28522196c177.json and https://artists.proofprofile.net/proofs/artist/73e0078d-050f-4f75-940d-28522196c177.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 0x8f4e85f910ab5326b7aae5ff89d667d75fd24188204c97ed3652a5836e1bfdce. 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/QZAPG1841152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdeefc00ef04b5c2103d8a7af8dd8841712efa61c8b35e06674e69ac5b58e2f. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZAPG1841154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34eb8e79e9cd351590140edd7ffcea4d742ad97094817f7529409027b9d44706. 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/QZDA61865898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7da20befb413da5a0efb3270ba231d6ab49b7f0ce461ac6cecaf33270e8d06. 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/QM24S2101288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3bc2e258c49970ef4dd71577bb60604f831c89c67dfcbf8bf18d8d39a6cab7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QM24S2102063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cfdd43750f7f57f57616c917ed26167aa941faa2b1274e898c3e551db5d0de. 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/QM24S2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa3e614ceceecff66c21fc5e40ebf9ec2492861d2bb5c3eb204617642ed4c22. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QM24S2102064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b64ea0f644d4fdf4b74ecf8eab2d54f60fe6bb5f24a81e50b3f024d3ebf9a5. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/GBKPL2031988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7da20befb413da5a0efb3270ba231d6ab49b7f0ce461ac6cecaf33270e8d06. 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/QM24S2101288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3d7f9285648c75a1db08a7afacaa7fcda544bca1aec9943d7b0a1843fa6ed8. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QM24S2102065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadc9deb1d653264114bec47e97d99fc794a249fa9ef64699fabc333facf4a3b. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZFYY2050341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedb082d0721955d4bf1013887742cbf7f84041ba62f884f6f15f7d0e0207709. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USUYG1412299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4ba5863bda2b428d3ccfd8c5f5787125fffa261bffa2994eb63638a72d55bb. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/USUYG1435395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005671e1cdfd0ccdd2fa62d2cf10ec47659e9fe5c83c1069475f9bd8aaff0f73. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZAKB2421037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b32296a3d65d4968ca2ddba8d5982117f909588262f30b50b053d1ec0f51248. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZAKB2434647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8317955af9b1f972ee152fd6c2174d5f099c9cfbc27dd33f449a1497b47150. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZAKB2525041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5aaaf263ae5c78a12625bef2f6d7598be32f83dbfe5788f9cbb1965ef25cf7a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZAKB2527949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb056af0e5a3de3185a047decd09b10158ff9b466b898221b013195a26c916bec. 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/USUYG1423257.