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 0xe21dda5ddfecf94bd212ab7e268e43b8178944558ed77ef85dbf9f596485e0bd. 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/74acd433-5aab-4142-9a58-a77a6ddf5aae.json and https://artists.proofprofile.net/proofs/artist/74acd433-5aab-4142-9a58-a77a6ddf5aae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mntase Vuka (feat. MDU aka TRP, Djy Vino & Da Ish)
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 0xd9b525a1de2dc51d63c14dcd24972c2fa2c84fb00a484602aed9efb71280a27c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN92089596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440a92f9d9521d35ba7cd4414ac23555074a2ed3fc0bc1f355f036a272b7bd28. 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/ZBCKG2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd24a526432d3c67dfafb9c6d313e194e605236dd68a5607bb56603f0e0f24d. 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/ZBCKG2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac7a0eb7895f30d8c18b90fdcdf20a3e95d36521f93958b3b70f9f19ab76d22. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZHN92089598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6385daef721d43ec5c80e9d1fd2b38249a1f2db20bc47e966791efa50b94233. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZHN92089601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf9ab9c5eba0af988b80bdb676ef0f265b7234bb188df23bd5dc72797b1a2b0. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ZAQ652300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc16c4eda87c7958518f4a4bdcf33a315338fff3e9769734dbe24ffafc424da. 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/ZAUM72101421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c4439b12d1defbf0ea57904300c079f011a00f339612aed7320b34f3c960a3. 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/ZAUM72101416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbe28aec38e890fc9024620723f454a51b25b022451770a48c75c474e8e705d. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ZAQ652300009.
NGiYA'SEbENZA (feat. Nkulee501, Skroef28, TribeSoul and Mkeyz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccb96fb815683be5af9d342533abd6c4ace9c05be946fe0bf6326762b681993. 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/ZA56E2200638.
ShONA MALANGA (feat. MDU aka TRP and Mkeyz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9142ac4f7fd1330681f67e0c8bae88a8ea4a791db7157d786847ab26b1a9b680. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ZA56E2200641.
tRibAL RESPONSE (feat. MDU aka TRP, Ben Da Prince and Mkeyz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2723a43820f9bfe2b17006fe558a9dd89d657618d12adb3d8d7a8857d9cfff3. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ZA56E2200642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafd925ce185ab825d950486e60eb3cce6c09ae0ff0129f5645325280b2d8582. 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/ZA56E2200644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f1bb22e112f6ac9d8c0cc5b78cf63242f9a01928e9614ebe997bd0daa82b67. 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/ZA56E2200649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddf2497ad148bcb5e3715cb791fa693386a93766011ea5c5ee5a314ad353d59. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ITFGO2300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845456da670ebacca2f1f7953d16ea89e7c7c882568eb600cd0a3564036bd7c5. 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/USUYG1501323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5668e729217bb1d6ca73baf1b06849873bf89219c646b05c274c543eb4ba3681. 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/USUYG1501324.