Manfla is a village in central Ivory Coast. It is in the sub-prefecture of Maminigui, Zuénoula Department, Marahoué Region, Sassandra-Marahoué District. Manfla was a commune until March 2012, when it
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 0xea055398511441a2be37c0e3654aef5d67d5cafbb1ea4969fa758e8818b9fddf. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc81c29e-fd62-4102-b1bf-137dfe998efc.json and https://artists.proofprofile.net/proofs/artist/cc81c29e-fd62-4102-b1bf-137dfe998efc.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 0x26d1e7c85a9ba07b3261aecf376096d00a9cec42daaf6a54ae292ebad0b794fc. 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/UKXN22327936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf32a6e6bab0593c1cf66006adad33f9f19147d92f9fe33eb16c97402808ee44. 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/USL4R2018519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc878a5fce82cd9e2541a3e068fc24701998a2025aeebb708221befa79038e828. 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/GX53U2092259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d30d68dee0b2e508bdcc72506dfa2f0aac9f321f5cb5d879c55bd75e84ffc21. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GX53U2092260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db8d56f81c1075b09208487c116a21be58cde70b148d7aca61190b0e74e9669. 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/GX3Q92189854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580da8784b52a448f019aa413c0e615c5641ed1f833e2fb5bbef29a1162eb999. 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/GX3Q92170589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c3ece698c5711e45cc3690e34e7a974950f37f46f08b1cf7d0bf2fb6adc533. 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/GX3Q92177840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b73d849d42294ed7757fdefce1f6034d7d6cc6695645df0d4fc23a565207bf. 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/GX3Q92159472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417fde54971bfe88e0a6d9b2468071a50be40b33205aa6429e8813dd1f8d2ba6. 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/GX53U2049027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf515d5274def6b23bdeb94b0660adf5691063d6a605bca51bce8c9715721f6a1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX53U2092261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e241492462909031a6cbbeecd58bc6825ff3818b3ad262780f26f05cf4e106e. 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/QZ5AB2166601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604209b8673594cc551a1483e91b7d22e6717a95a84372532a699165b3ccafad. 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/QZNJY2043696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eeb513edbe29ccd71937dfd8e1c93ef136df046277661c8126212ca37ddb4cb. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZNJY2043697.