Mad Tsai (born Jonathan Tsai) is an American singer-songwriter and social media personality. As Taiwanese and Peruvian descent, Tsai gained recognition through the short-video platform TikTok under 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 0x0a37eda6a90c373f9782599e1a61402b5ea877899c9a1ea781e0fe01439d9fc1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de5c6940-9688-48d3-ac6d-7fb7040315a1.json and https://artists.proofprofile.net/proofs/artist/de5c6940-9688-48d3-ac6d-7fb7040315a1.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 0x6844bfb603877187df9beb4f17c6ae26cb7f61d4ef9866083e7b25aa253cb673. 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/QZNWV2111785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930fc12804dce054c95732dca47f71ad4958829d0fefaba68a96c7c8811a904c. 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/QZVEM2372100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d6a396f2385fecf278b817a3c3672848b67e3363bd850ce9c911ed7effe11c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZVEM2362528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0f108abe531e4026485257243e78357a25b6ef72708d3d6c2ec5b940b0ab11. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZVEM2329173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf180776622ad9b96bc11ac68cc5ee894b00cec1e1afb23df8d0bec18b5060858. 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/QZVEM2329174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6503af170f266c9ab1e829f740b04c34d9b399021126238e1104aafcff84a52c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZVEM2322694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c7aae9e5ba3c05abc52e2dfc797d58c92b81ff96386628b5384eb8c9b367cc. 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/TLREW2227915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa173c05724d9439a16a45bb99ab2bb1644c4ab0698fa82390e39dc089200bdbf. 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/QZHN72008301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d32779f5adcc0ba47f4205e85d19586feec8d9a963140be369462c1ae0ba680. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPEW2422661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9347753392b9934221fd79ee60ceb824bd3750ba9f3b311e4d4e8e8318a77f3c. 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/QZ93L2056092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7ae81b0e203aa93e2c7805ad049a7d4e4e466f51bf6a720f350a8143d84376. 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/QZHNB2109187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15b3786e7cd2cc7ac8209aa1affb23572f303b8b02bfb851646b013ecf7b6cb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA52249080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7552b5fd62dfcc4f0adb59d085eaf46ef61f0e58f12edf59050ba8a6b2bdf7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA52249081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6b6a18f15819e1404b699a4fee6d59c604ef523f75dc269d182baaec5af4c2. 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/QZMEQ2147028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6844bfb603877187df9beb4f17c6ae26cb7f61d4ef9866083e7b25aa253cb673. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNWV2111785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7ae81b0e203aa93e2c7805ad049a7d4e4e466f51bf6a720f350a8143d84376. 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/QZHNB2109187.