Zaba may refer to: Places Zaba, a location given by Ptolemy in ancient Southeast Asia Zaba, Democratic Republic of the Congo Żaba, Opole Voivodeship, Poland Other Zaba (surname) acronym of Zain
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c3038c12713ad09e0bf99b0e4dd098662972ac389838d7674fef0f3fbe9723. 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/15f4e2c5-02d5-4679-bdd7-e9438881a1bd.json and https://artists.proofprofile.net/proofs/artist/15f4e2c5-02d5-4679-bdd7-e9438881a1bd.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f010de7cc249cecf683aba8a00b59504493ebc82ad99067239f409dcf2f2d7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:38:37Z), 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/ZAVEH2100162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a50ce5ce197c8665dee32b702340f3c50f73015bdf603e544e6d141191700ee. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZAC012201540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3257be7e54be52cc7eea4b92d41323132b4727b6dc40649776c7c4291593d12. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZAAK20000615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5d1a642b53f28fd7a043161804c4ebbc42d9f2899c122bf0e0a99ea658f113. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZAUM72201663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef30c70c4fec6713dd5a59f9afe3e439de41c593afea5b5e0dd99146e556888. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ZAUM72201665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7add81829bb28793ced38bec2c891d14bb136cabb56021069bce51d6f489281. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM24S2107618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864d39452636f203931bbf56643b76b3331e9d0419fc947df36725b1c162a00e. 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/USUYG1519701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864d39452636f203931bbf56643b76b3331e9d0419fc947df36725b1c162a00e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUYG1519701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44c8b059abb4cce7feede921b8d8ec6c3c77516e9f9e66562870eca9b5c7f6d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZAVEH2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0341e6b391af2f839965ca456f29c7d3de9bfd7b0c14a30d4026eb5e9d8df823. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZAVEH2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7239b295a7970bed820f56a657ae829303c2aa009bd0a5694604f6be0acaa4db. 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/ZA7RV2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f01e37e512fe9365e0d7819917eaade143cf1ad576ab08cc20484c36b9c36c7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAE3A2100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78fdaa1aa303c5c0f4127e889a5d6966fd847ce7670467b28677729e97e7a76. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZAC012301002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f9f6e739610e82c1a8ab1e95839de743f87c9e1b15625febc0a87ac2d90d59. 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/ZAUM72300963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe52a97b80627f484fb56d7464c88747bc6a2ea81aaf952891a3f9cb29ae33d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ZAAK20000509.
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 0xcf8abe3a0e3408d7879258c70f4a757993068e26a2238ca3d040bdf71cacd82b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ZAAK20000507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34aeeba13eeda3685089d2b48d675b422643dcea8d55dff85621e16fff003256. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ZAAK20000511.