Mark Cousins may refer to: Mark Cousins (filmmaker) (born 1965), Northern Irish writer, director and producer Mark Cousins (footballer) (born 1987), English goalkeeper Mark Cousins (writer) (1947–
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 0xc46ca8f0343354047d6a43fcea88c98434ddcb5d3b2f518958d94a9c58667085. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9879731-3972-44e9-9d96-0ab6362bf54b.json and https://artists.proofprofile.net/proofs/artist/f9879731-3972-44e9-9d96-0ab6362bf54b.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 0x2806daeae5e5391e7d09a1ebcb150570e629af7f127855f6b785e081915a1a6a. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DEB632315645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e214206264b92d61208705e9c921319d05bc8cb26265d5e0d444e1541b97f8. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/DEB632315649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe923db220982d8aad7c113447ce4c24be642e6d13c4a645dc1eb8b0621d2e35. 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/DEB632315653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07dd5c16934a51262576c12386435a471d3e85b8005cd7a0a6bd0f41b2abc6e3. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/DEB632315657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f3dab3e144f1c1e5a1badcb4790528db98b299a4d56ab8ab2077e0c511b2ac. 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/DEB632315661.
The City of Prague Philharmonic Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c16c46deb743a62b90aaa8ceb241b1b9a230d3599c50495f57923edd01867f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEB632315665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e7f6e15a25c3c7202f5bee1fbda960bb93837c5f3b89b4ef64b93938fab025. 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/DEB632315667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee5aa9d65a72cca4d6a56ec5b149cb096c4fad309beb37be549744108ab4408. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEB632315671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4f94ca13bcc377d0d29521a1ccb7d2d2884ebd1103f8530f6ccf4f8969d7b6. 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/DEB632315675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4175ce7514bdb1695ba10c7e6d28e18030f42f3a57e2619739eb8930c49a190. 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/DEB632315679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1c638f7e277b3a0212024cc3e90102e8f97dc45be66aa153fe86f33ffbf2d9. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DEB632315683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08fa81fe8d2ada22e8b9cac5a7e608a4c2653384a1bebc44b8efeaf757c5ee2. 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/DEB632315687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b5b94978a57688851bcdb2ffb254c5b75bae5c24adae17350a64b8b78e90d5. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEB632315691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb868488de8c3f28a35c247b35a296eb5853b57f6d2a111a6b28c414f602a915. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEB632315695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1ff48ac408b78307e02fc4ca05c0522545c82499885f977aabb43727d6cf5c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEB632315699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6009de89f383f5fb6011b4c2ed27861e41b595ce73618cbac39a918cfda647. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEB632315703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415a9250423d5320ac74cf22157a03fe02b0753e7f5d1747cf385bd32b995b41. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DEB632315705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b3850ec68878a18e8b60e4da19cd51c79e1c7e7fde8c52b68dbd4201085610. 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/DEB632315707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4f21232c1b25a1a0d26302f053efbd287c9281344dc588caa9757ce2d1f8ed. 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/DEB632402102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ab68491a9340f6f08811e63a1105a06606072d443837c1badd280fb20b34cd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEB632402119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe960e62b5afa998b16dd69ac1f254836a3c723da874ce4f96d729a0a70cdb266. 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/DEB632402135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027673b2271af624bf94c7899b0f4cf46ab2a712507b1d366e9e295313178c14. 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/DEB632174209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43417962ff743f3d2b5bfbdd394c5f0ddaea62090883bdf7f775bb571a7b1453. 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/DEB632174245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74a805ea46b59b56739d8c494cc9cf8b2dc7382fa57b3087a2ed69c1e20efd2. 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/DEB632174249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5589dbbfab1fafdee4e7889979083879fc2ce96e865353579ca6e35b09555e4d. 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/DEB632174253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1087ac23986ba851ec8441a6a239419beda74da655b1f16fe0e27966b5816cad. 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/DEB631692801.
Family Entertainment - Magical Adventures
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c4448fee364a45426885b42d51c7f7305c47444ca831dceca1ce29f11da111. 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/DEB631191906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6937d73ad5431dd271e5871dfacfff98782b042b1c726bf47cc74c098186e4c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEB631191914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebf860cc598ef9c0c3eda0ff347dd8e6a98e49c63a699a068db3ffb67fe2487. 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/DEB631191916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53931e1cc564895d2cc5add6dc33fb3b33721176e766ed41fce5c0306698184e. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DEB631191928.