Madcap may refer to: People Madcap Moss, professional wrestler for WWE Arts, media and entertainment In comics Madcap (comics), a fictional character in the Marvel Universe In film and video Ma
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 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 0x99cd720de2fe20642cbad6dafdc6b92a645e48a4afd65de8ce27dd405482d7f0. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e471c138-1694-4e27-aa9b-44af739f55dc.json and https://artists.proofprofile.net/proofs/artist/e471c138-1694-4e27-aa9b-44af739f55dc.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 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 0xec4f48865ad434b1bcf7814d9c4c2f858e492a4022a2f1693390b3bcbd67d8c7. 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/GBKQU2452821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6215d54fc69de403d5a1c0bcfb013a6e9c9cc23b083788bcd212faf1da39ecc. 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/GBKQU2452822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0742517d1b906b681c3eb8d57efd9eb07b572b701a8e0fa4575e3ffe9f4d9041. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBKQU2452823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b59426f800600633724d6afe54c361f1acfa1edb810cc39f180e30184c605b5. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBKQU2452824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84505f62739a00b00ed1a874774f7b737c29bd23ab9c1ffcdf84bca108f7c66b. 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/GB8KE2401465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e89edf1eb9f763118a1348e72c4a91b1a5a7570487bf4b59b9b8614ab0eb59. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GB8KE2401466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4771ae7ef235ee44b053c9eeaa50122d5374b5377834841264ab9470a22f4c0. 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/GB8KE2401468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139443c6047d57f5e0a76831f99576c8eb63fd3dc6a6b785891ae79b209072dc. 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/NLCK41099142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1d2947a7eb666d90bbb52f10f518d1bb11d6fc2e1a0e4ba7b5c65a6f403d88. 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/NLCK41099144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd173839a1e9680413a8856e0cb03a092c7763ea7f1ad33658273efe491eec4f0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NLCK41060107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7fad65d19728fccb20db90b86fb5490362d939de43bfb75148844e26c357c0. 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/NLCK41088723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e6eb4d4dd8c0a86a2da23a1b05377e1508cac3ac0a5fcdfdeacde6eb7d3ae9. 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/NLCK41088724.
Green Project (Liquid V Club Sessions, Vol. 7)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510259ec1cf8de3e0c7e99f80e1bb40c6f2828a82652a3e146f9b349e1deef1a. 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/GBSJN1301076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6ed5d0bb8fbcc2e523dc822b59f72223609895345036a0b1b4cd9c1abfd9e9. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBSJN1301078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a91b7f238e10a9282b283616d8f26526b1ad1d3d8e89a319cd349a90890a022. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GBLV62010229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c935b3b0f6063dab99eabcd90282a0df8e43ae195fe31f003838d03f17851e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GB8KE1958580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3f2a41b43d3ed9b5beaa4d5693de08d4515c1d3a8bd3c488dd18e0aef30aed. 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/GB8KE1958581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b32abb7116c884f0c124b6fd0b0c459996bdc2fe502bc0c50edf828072559a4. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GB8KE1958582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfa4751b4d4d63fc9c1a1e7bbd109931623c84850b7d74d92f9cb348ffd3ba1. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBLV61916278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83deac5da3e00f46c96fc39665da96562ddd271c72ad3fe066dfe095200bb524. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/NLCK41054729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a28964cdc6fe9cb39352d8eba28f243e9f2b9ef0e674aadb9c9c643152cd4fd. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLCK41054730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11df041ffbf9c92c7193bd2ff90072291914b864effe715952b38ea124e044c. 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/NLCK41054732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c5db08f77027826c2a0eea0c08e22c1876aa49cdda9a287448081691ee4150. 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/NLCK41054731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0172971da2c2faae11ae15d42509c109092d5c5d3bb4d98c38ed56ad56c337. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBKQU1843805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89fa546cc36cd1d5089c0b6807e9b871309ecf1ed06b9dc95d38f0dd7837b9f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NLCK41028309.