Knowless (born Jeanne d’Arc Ingabire Butera) is a Rwandan singer and a winner of Primus Guma Guma Super Star seasons 5 (PGGSS). Butera writes many of her own songs. Her songs touch on such themes as 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 0xed3fa88a058da4baecc217f842f3488ab4bcba6ced68e11a13f229c2b61cce05. 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/4640cabf-add0-4148-9510-925b64b7579e.json and https://artists.proofprofile.net/proofs/artist/4640cabf-add0-4148-9510-925b64b7579e.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 0x58db3c621a9f2fa7cdabe4c5d99c1a86a7d8a219398fd338297e8a7037b4b353. 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/ZA56E1520892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f740a23e16ef07f1906695d6822c5430a3dd3b4bcade00e108ae9e57f85bcea. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR59R1919774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae97af82f092bfdf0699ecc3ad1499f44bf9ea2f0ad2c90fa109c81c32cdd84. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR59R1919775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7cd408dec8d0b047edc5ad6990ef7b5f7a0e4b4a39cddb0746e2f9d1da6460. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/FR59R1927280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473f49785607077aa8a271332dd294b11cc9726452acb379488d9aa5ffba8f7f. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/FRX202107656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1e869155e515d532f5a8328fe5988b377fd42d727de0ffa308a1267f99d63a. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FRX202107660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495be20e7229635d8ea35692b7bb69d3eaebec8f8e8e0158e56634c5a73de01f. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FRX202107662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa26c8d7f630d0f6d7e765ec4987e31e1016542aa3f70b6d0da09a671913eb3. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/FRX202107666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ea5275103cc60cadf23b9e0eb2c1ef4f88dca96a5219228d822ceb8e677c29. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DGA062238895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578a307f29a77273680683ea545104c47d905ba8118a46e235d8fa490ee42063. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR2X42560631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd87da582f9ec5404c006cb707629e3829ee37828349668cddf96efacc9a4696. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZGLM2323084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd87da582f9ec5404c006cb707629e3829ee37828349668cddf96efacc9a4696. 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/QZGLM2323084.