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 0x780e077a40fea1c24662afe7089e2945988f0f1428505eb5643cdc215916d266. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60c67979-d9d5-4cd8-9b36-a9bc54583f7b.json and https://artists.proofprofile.net/proofs/artist/60c67979-d9d5-4cd8-9b36-a9bc54583f7b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
VHIMBHA MKHWAMA XIHAMBANO NO:12 NDLELA YA VUTOMI
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 0x091c5bf6936b32606a31bdcfdfb91833f26402ba2186c25beb84fbb7fa7fd6b7. 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/SE62M2135949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabaa3ed839b6ba8b4ad12817d0ff2e52f852519fd14d4761cc4c86672fe6ed3d. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/SE62M2135956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe428cdd649928680236ee986082aa8c3468a8f9b443fb0e064d956573619116e. 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/SE6XY2324175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39efcb1f3fd3ecd2329350309218b457ea767d60162cb851591ce4f439a81cc. 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/SE6SA2326556.
MAYANDA ZOLABUD NO. 10 UNGA RHURHELI NDZINGO
MAYANDA ZOLABUD NO. 15 MAVALA YA RIPFANI
MAYANDA ZOLABUD NO. 14 MUTWA WA NDHENGHA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd4eebf9ab7f9178fd67c2b8a59a61ececc4169209630ad2ab7e4f9314dfe5c. 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/SE6SA2419227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e24f582a6b9287b249a274e204deb779ec992c363cdb8699643adf8e480e7d. 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/SE6SA2419229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d216311a3f58898b13fd69950343cc8b290ac0efe42dfd6af7abd48c7e28b94. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/SE6SA2419232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6e54cd93aec549f73cb1134082a416b384b9890cf001aef76a6104fe6e3a36. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/SE6SA2419234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f5910a5dfb34967aeb4f7c35e734c1d0d5364282f3466e92dc0614defd2563. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/SE6SA2419237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c1b6e9d3de4b63770f9f10d265d6d846ed9d745f2100af751c5d96b28769a3. 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/SE6I32503449.