Cashew is the common name of a tropical evergreen tree Anacardium occidentale, in the family Anacardiaceae. It is the source of the cashew nut (often simply called a 'cashew') and the cashew apple. Th
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 0x3cbef38126c15c918225459d04e8617501c699e45f2d95903206b863c877fa67. 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/b5e4f990-3751-4e6b-8f62-c6b376789312.json and https://artists.proofprofile.net/proofs/artist/b5e4f990-3751-4e6b-8f62-c6b376789312.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 0xf101c9427de24ede6ae5c519206d0238f7e08ab4e306e326e5adfa144ff0d566. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/CH6542016921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696e34cb87a3b556c7be78ab24daa1b2938078f98c147e1ec8447a08367c2b5a. 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/FRR642100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696e34cb87a3b556c7be78ab24daa1b2938078f98c147e1ec8447a08367c2b5a. 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/FRR642100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe915e720ae4971c4e90aed6af349074c430d3a1c51ec758b2aa32e8bd2d4653b. 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/FRR642101346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc561406b8111d61fe537c3cbd794cf3fa6e92e7b65a1e797ba3e90121827ea79. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZMEM2214151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3076d919a3417d8db7ed55d21fe7fa446f3b434f9d30e3374b3074784925360. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTBA2202809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106dbb6d04f1d787e3490d4f5db0e60a8c0614f1a45e09e967f8463332a8a7d1. 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/QZHN72350454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944050f77e1bfa134911eda2a9c8f234dc77e3930a01c76b643f401a0af573b6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBKQU2360633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a684ea1ab74c11974666fa5f2eb8dc44bafa00107c3f5232e1d7dc67be57e36. 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/NLQ8D2300397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670e6599c2caa8ecaadd45b77e79b79142d68db8274aca301d89bbfeedc59ab0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/CA5KR2383902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b84e86a8d64f9289542441ed0ba2fd30d0e59043d7c286ed75dbb7ab51c6b7e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/CA5KR2429933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac8eb083365ef4e32a7b2c38012df86c41d554790b6b1caf3d6d7f8f09878d4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CA5KR2449920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee52a01ca2a65ff8a8235e05e33d520994d24278802b350afc363263b980e83d. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/CA5KR2487173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5184e4b6e440f335caa787e2f13fd1e5fa1f644c8ee41d560c356d3659b0f47d. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/QZTGW2400271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335cd1e5b34877f41e47acc19cf309bd18ccd8707484b091cd7692c301ec4106. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/USLD91764649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faa7a872f08eb49e5c095b33af475a22f2ba75c758562c9bc187ee7aca2db7c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US23A1591585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945a3e478ccbafa8e5ed77895f95634833a5f14267d11c9fbc9f5c1ff9a9c77a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US23A1591586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bed86efbba5c22e085d8ad8bebf2da43d5c522929054aa38d79bf162d2f31f. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USA2P2428332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b8bdf33d4e8a44a4c9f61a7a66f87811748fe25d001a9dae9e0a15bdaff8f5. 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/USA2P2341595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b8bdf33d4e8a44a4c9f61a7a66f87811748fe25d001a9dae9e0a15bdaff8f5. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USA2P2341595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335cd1e5b34877f41e47acc19cf309bd18ccd8707484b091cd7692c301ec4106. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USLD91764649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42643164d51446b7fa4a67fd6baab893f94dbd2b4d0c3b747ee7cc6471bd99f7. 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/CA5KR2241883.