Willian may refer to: Places Willian, Hertfordshire, a small village in North Hertfordshire, England People Willian (footballer, born 1988), Willian Borges da Silva, Grêmio and Brazilian inte
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 0x076cbc035c201867a4a04d5627434417d0726f8d09acaa93fa7dcb87afad458a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37e39314-e2f7-4b06-8ad0-338b2b99e09c.json and https://artists.proofprofile.net/proofs/artist/37e39314-e2f7-4b06-8ad0-338b2b99e09c.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 0x99234d72aa572bdb52824b7f98e84d402e0198055d61531cae28655f54a12d9d. 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/QZMZ92415732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba97841703948e0b7d5ba97ad91b484bd2f148a0d3250566ddedba4403e8bd6. 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/QZNJZ2439223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26e6554d064dadf97351e6ed4ed4ea3b014a2a12cda4fdeec8d934657d7bfec. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZNJZ2439224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed569c1ef586d1f9f037925fd3fe406f9fd4b89343bf2e0a8e594add53a729b7. 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/QZNJZ2439225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2d2c307a176d6a45bc3f9daf3b557b3610864ddd0154a9a6e67307d0c3be4e. 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/QZTAT2574509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbec1aac8917fe05b7e03ef31fe9427186eb9299f1e4f36618bfec875a12c46. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:05:09Z), 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/QZTAT2576255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93542d3000bdb7b0623576056cedfb12d8001bd4262bbfa72bcd76dc72549cd7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTAX2537785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae9ddd9b1b6a6a616741be8d886db79d82ded08f70c1b33ff10f4f3a1f27ae6. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:01:31Z), 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/QZTB42512022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f1aaab718549090f4b3b54c70f063daedf2bb310888bdfdf3c71f905cb1b53. 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/PYC502400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f1aaab718549090f4b3b54c70f063daedf2bb310888bdfdf3c71f905cb1b53. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/PYC502400005.