ZOA or Zoa may refer to: Zoa Peak, a mountain in British Columbia Zoa tribe, an indigenous people living in the Amazon rainforest ZOA International, an international NGO based in the Netherlands (
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 0x016ca439a102ca1337146dcba8f1d204d2a63ba581828ade2565faa7ccde24fe. 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/e7cf4790-ff83-448a-8c5f-c4b13de8d1bc.json and https://artists.proofprofile.net/proofs/artist/e7cf4790-ff83-448a-8c5f-c4b13de8d1bc.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 0xf22f124d5f0e7e243dea3ae0c84f38919363d35e5c1c79398eb454e92944dc4a. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/GBKQU2180368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e80b3be9fa0914f23cbd9faa4fafb5844e20ad0372e9a407eb64e2e9058bacf. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZNWY2143475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa3223c0c9f4780601ff0ace66170a6297c6f8fabdc189057129b1200bc5689. 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/GBLV62126031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6338ea193c77a0bd5ce31e7f547ab186aee440c74f1984143f697952b889004a. 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/GBLV62135459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89acd3b13484894b70a5d6fba0319c482484fa885ecf207e686588d28629d83e. 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/GBKQU2235569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2622b2d46f20382a0f1cd35324b67e2f7600e13ad50a8f459486309cdfe8dd1. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/GBKQU2290880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49823f8fd7f73ab25514b8ce700fc226b51e5b3da2ff459f78979cc30af40218. 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/GBLV62212073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2e13987036054794414077e611e25b11a748b72d82641d36d8f551cc8d44f6. 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/GBLV62212074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffea7cad4c3d69381e41bd9fafc21bd4a7f9f7651d1a2309064cc2e92e9454da. 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/GBKQU2312688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37699faeed1742ac3b6eb29bc6021bda80adf6dfad238116f6019e25b228ea27. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GBKQU2327598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e7dad4582ebe04d4d01c250a76697d2c015e96efb6de6708b7b076a705fb45. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/GBKQU2337617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf90d61906b9b08c7d551431ff0aafc2ba74a2bbc1273fa5fb82e5ced238a9fa. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GBKQU2345987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18da42a485d58015d7a510b5fcf745b161550a0d084c615ce93f3362877d837a. 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/GBKQU2390692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fed7d00021ae5d7948f22cea0ce648d70540bca8113085f3cc1998c9efcd3c8. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/SE6A92398329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc396412cf0958516fcd70a81397f9ce60d417c6c68cbc2f68e31e687c54034. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SE6I32486303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1657359a14e29c1a9e3f577c0e30de7e72b80fa7126ea9c7ccaf6f3ca51c5ecd. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/SE5BU2400832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b5849ed7a99aea51f84a80def4d44092a2695b872f11f465b14699636f181b. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/SE5752470516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769e1547a255edac9b7b3f1c041e4936bd346b03894f6eabd38aeeb62a48a144. 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/GBKQU2374064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050869c1f1f78152730287788cb8cd9f4e2901d9efbfa81efd0c15b55bd941d4. 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/ES5052300091.