Mightyfools were a Dutch DJ, rapper and production duo formed in 2008, comprising Jelle Keizer and Andy Samin. The duo had three successful productions in 2013: "Footrocker", "Put Em Up" and "Go", res
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 0x796926cb0660a9c07e97cbc41c2c53439dda08a06a1fb6e8b6698981ad6eb7c5. 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/ca7a2952-e219-4494-8ac8-a01636d5826c.json and https://artists.proofprofile.net/proofs/artist/ca7a2952-e219-4494-8ac8-a01636d5826c.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 0xe7fdc1f078dfa8447ac899014386862ad2888377a84e3bdca5ae8335b783ee94. 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/NLS241203526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fcf1bd8dda2a171bf2596fc3bb88988f7ff177fc2860e6a5559b8872c6df41. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:33:15Z), 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/GB5HL1400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978df9005692a148be812ed790907cdd002a87a938110bcfb2332256adeee102. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:55:10Z), 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/NLZ541400889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d116075e9fc2b99af8b86a062215b24dd27ddc904365eb4c2c44c2567ec2950. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USA2P1547494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274b5a3eb1f709d6442362ac17fc1b8a56c4af3aea26cf490e499efe7ca3deb0. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/NLZ541600559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78bf1c993bc5d104e8fd02b31e2a36be12e46e68cab4767394e1a8d9aeda1cb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLZ541800561.
Destroid 6 Put it Down - Mightyfools Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2881ee66b2919d16db820f58ad61c19bfaa35c4259a2e2118319cc11207b9f51. 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/UK7H21400007.
Yellow Claw Presents: The Barong Family Album
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d14d489efe7071c6cc80e7197d057a1fa734df8868a2fd4ef3a96a7b6526ddb. 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/USA2P1690194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc943fe2b3a757fa2ca66287bd2382c01b29384549ad6809ed0415c18ce0d7eb. 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/USA2P1690200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13436a698418d96b04465a5b7527859ea0560b0b00800d862abe2e833d62c1bf. 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/USZ4V1600143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e401330ada9e18d7b837433802f5343642dfdda6cfc2fef2792860404bc5f3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEN581100886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8676c84dedb1d5f87c9bfb7de693bb23de40fe7e5d9ffaff92a2ec553ade188d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BEN581000363.
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