TuskHead is the stage name of Dutch singer-songwriter and multi-instrumentalist Patrick van Zandwijk (born 30 May 1995), a musician that blends Americana, folk, and country influences. Active since 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35d97e6846543954c897db9fa953efb444bc36517c37238d126b9a871701b32. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcf68ff8-6934-4158-8bcb-8f1d3b76fc63.json and https://artists.proofprofile.net/proofs/artist/bcf68ff8-6934-4158-8bcb-8f1d3b76fc63.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 0x15ca93d76914bb46fc462a2701acedbb816d2805305841fcd05ed0e157e84053. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:10:44Z), 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/QZHN52264790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e23b80be70675f3e2b639d99dbf7fe23bd6d32ea202705598567d40b618426. 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/QZNWR2416318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fb4c289a9db23d2ee295030b3ba63663b2d7875b1ebe42f327c6ac5130ee08. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:44:14Z), 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/QZFYY2538825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f5a1707d2bd82a5d379f89839bcaa43f6877ca49fe77537645c98bd97b7c6c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZES72590854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0bc6043212181c7c394e87e43a031fa4cfbe150a7fabd91f654b59b011316b. 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/QZHN52548629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc162d3f5f42bc04502e361cdb3768d6adcdbb0f49eefd04d834040393a99857b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:36:37Z), 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/QZHNC2537232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610c151488960c6421bdcf76d74faaebc5d712eb4735e8ed7fe968cd60e4b6d7. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6H2514653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0bc6043212181c7c394e87e43a031fa4cfbe150a7fabd91f654b59b011316b. 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/QZHN52548629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0ca9a61f1930d0637f05b4de9519d5371bda1c79c14e65a5d0f8fdeacb7d31. 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/QZK6H2514654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa1d5c4c976ff4f6e83138ee5761cd08a65a499059d58f5879d42d7417e0550. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6H2514655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f5a1707d2bd82a5d379f89839bcaa43f6877ca49fe77537645c98bd97b7c6c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:03Z), 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/QZES72590854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5737c39a7b56a69e105d00d9e7b623e8d6ebb812099c1252428354cc9744f082. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:46:31Z), 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/QZK6H2514656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3950dbb79c742aa8cc5810673d01f39128e00dffb5aabd500e36db2d3dfaec5c. 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/QZK6H2514657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc511fa0ad282ee5efe498a1b0dff103d5a2782bd9e0180228f0f07a49fc8e5d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZK6H2514658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513faa602dc3ee9bd98e253e8b4d63d2ede9c2c4d6ee9b7975bd7fb162eeeac9. 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/QZWFS2598444.