thumbnail|Murth The Man-O-Script Murth Mossel (Amsterdam, 6 February 1970), also known as Murth The Man O Script, is a Dutch rapper and stand-up comedian. Biography In the early 1990s Murth did his
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 0x1b099a50be84667180e32ae97d8be504cbe9db7a80856efd416a285a115db031. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0f9fb35-4801-42f4-ae49-b01a4131c57e.json and https://artists.proofprofile.net/proofs/artist/f0f9fb35-4801-42f4-ae49-b01a4131c57e.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 0xd67c8e2fd2080e1ccd0336ff584831541e3971bfa34dd8f10406f5e1b36335a5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/NLD321301638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8dd6b3f8226c2d6c0aa7e2accf2116b10e3717461b83d9edad2b4f6ad3bda87. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/NLD321301639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255e135ec8fcee3dcd6ab8a8c8523d64d56faa10a64adb4b0e92ba65a58fa8c1. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/NLD321301640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557237a611231ded9293aedc5d2b3a93933558e980401338996953f18102e193. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLD321301641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451d7928012da0a8ac341844e20e9c72f5a56ac574e52cd376b2f14e3fe3ad54. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLD321301642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20eaf5406d9c96776da12338efa3ad3e635891b51739412d1e07de9c586f64f. 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/NLD321301644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d47e5b062f7a03d12242a2dc0c7ce3388f4cbd44f245d7d252cabcbf716840. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/NLD321301645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c48834005692463a327cface8b7ed790a8297321d8690338fc4f39f13df6d2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NLD321301646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b584f092a9dad8cd75fc8dc0055777193f7bf521e2a5f9e083f1df576fabcdf. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/NLD321301647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060fd5be81b88ed34668d5c44b650591c897106255720a38a05859a5716bb615. 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/NLD321301648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c7b6be0d32b9035f6f91f00e63482e0d2fb037a945422d05262af710208e9a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/NLD321301650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854b532101a55c5d1acebd8aa37505cdf4bd96fcd06a5578896c437b6cb96ef5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NLD321301653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1211f53fce6599de4ea3b5887dc71d1eec669162ceef5783d3fa915ab7ac0f40. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/NLD321301654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc7cd8a0ff31c64099369e7e25a9cd1bbce84224c8cef429fe123ae5c702eaa. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/NLD321301655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2896ab134e37501398ce0be43fae39f4bd1de7a5dbeca396272b9d195b451fed. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLD321301656.