Shane Bunting (born October 21, 1975), better known by his stage name Madchild, is a Canadian rapper. He is part of the Vancouver-based hip hop group Swollen Members. In 2009, he released a solo EP ti
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 0xdd25a6f74221ecc14ea46828913cf00b5e9c39cda2b9518a0eb3fb93dcc7365e. 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/61bf2a16-04e6-414e-8464-aa74307308ba.json and https://artists.proofprofile.net/proofs/artist/61bf2a16-04e6-414e-8464-aa74307308ba.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 0x0cbf1536443e066ca838d7be36e2671b5d99ae627bd586d7a373faf8f23a0804. 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/USS1N1127409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb778beff9644d3d2069684b0f4b246d4ab33aa0f3fb3533cbdbd031ce6e07ffb. 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/QZHN32231339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63315907da629a542277cf6bb51355f8076bf0801028b9c63e019b865abe1329. 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/IEBAE1800115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f55b86277fb921ebbd97656c1fb30c98dde7cbf5586251110181e4a880bb635. 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/USY252210008.
Look Up (Signs) (feat. Kardinal Offishall & Madchild)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2f52bf40c2232827fab6e6c8152884ff3b472dfdd0fb06624b20e26f02877c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USAT21404170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b32f5815f9e43d751fd2bfa7b056fd2c389bda09c44b2a85e62fc4d6c29d05. 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/DELJ81350911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036c130ca8dc53a49320283b21caaab410cf18f409998e01b518d2aec4afcb27. 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/TCAEC1960068.
Crazy (feat. Madchild, Lil Wyte & Jelly Roll)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dce5a47e40dbeeae6ddf5c6e60808f664598af65343340e56a6e1500c22b9c7. 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/USHM21612320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669a88ff67971f90959a47b6341cac842ac56f64df2aece851cef0436cb0584e. 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/QZHNB2067696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eac0e0aeaa4a2a8d61dc78ce0631ec4c87019d486dde075135cd57d5b7a52c6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USHM81730059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425f93bcd6feb158a5393081fade770c532c0b118d2d72db38070d77768c6f81. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USA2P2243017.
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 0xf000153541483969f87a26bca56ed6473a9c8dd8c46ef11b021fdfab3cb2c378. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCACX1753411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fbe81e2b537909f3007bc83a836af25419b6be4a35391174965855624ec2a4. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZARB1867544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb158cba20b8c887a8d803e4072c4b0d57287a0ba4e8f750a301b8640bb33dd06. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USDHM1914758.