Marcus Harvey (born 1963 in Leeds) is an English artist and painter, one of the Young British Artists (YBAs). Exhibitions Harvey has shown work internationally in many exhibitions including "The Führ
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 0x61707feec30cf10a4b2d5d0b9d3460944a1129d50ebae9f6a6fe6af7f80c0ed5. 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/45124354-8e18-4971-b1f9-19b1e587e3d4.json and https://artists.proofprofile.net/proofs/artist/45124354-8e18-4971-b1f9-19b1e587e3d4.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 0x86980e66792b4a449f9b8bcc422fd99a4afe38dce00bffd711dd72a3be873c19. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/GBMA22058868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f18c327ea3a6dd3e134992c2e6bedca33cd8ee3969d099ffb43a2bdf2bc036f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:34:10Z), 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/ZAVM22000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7418516cced390a5177caa54dcd0434103ec907f7cf6cce899e16918bc4f3562. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:15:14Z), 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/ZAVM22000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344741b26a8918db9d4f0e4f12205f0131a1e2247923e17b21cb09e983e1ff53. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ZAVM22000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85dc7eecc4e76f138c53888ee232dda39fca19f5150f2b71852e1ecedd62152. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ZAVM22000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba83c320769cdd1ec8fb188cc6976fb462c52f2508dbb676cda7af4522a5a92. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ZAVM22000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1306b64b696daa3acc2e659cb2e1b27a2b0c69891b42d68ffc9f6537958e0a57. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ZA0W02400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c783a375b94232552e5f81bb13a2763a902bf56a8b8b6c7937955169aebd9a3. 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/DEY472470455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b880134dd20eae0ad75a8389b51e2a0d56252da989ba9a42efe9111ec6fd32f. 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/US23A1553142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b880134dd20eae0ad75a8389b51e2a0d56252da989ba9a42efe9111ec6fd32f. 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/US23A1553142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0865a325401d85e42c59d442a34788e64ac794413bd8bad4e27a2f53c952fdfe. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ZA8US2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbe184a2ac6d99a7c4098586f08ad8f6255686b2934a952342858dfdec7af6d. 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/ZAYIR2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb048ebcd5625e03e9541a94311af2c7d857b652671baa394f1c0b5513bd54bf. 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/ZA0W02400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe976c71f1dd70b93e95cd6eb52cdca890e49135e1a88d9b3a995a8092d14710. 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/ZA0W02200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da3ac893e9e1f001509e23373b70dfc6bb5cdb1ca4e6c51802ab689ea13dcca. 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/ZA0W02200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007b79d42ddf1c671478e752174730e086d4f643f67807efec70c2ac888df721. 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/ZA0W02200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007b79d42ddf1c671478e752174730e086d4f643f67807efec70c2ac888df721. 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/ZA0W02200097.
I Need You (feat. Marcus Harvey & 031Choppa) - Groovy Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bb9f5969b15bd0e81aa46733bc22c98dcdafe1d4d49a8d1fbf9c58ea8b4740. 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/ZA56E2002721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56087252b542bed9ac3128fcd94c127854fa6ba911da2673610e881341a48690. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZFZ52176880.
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
Love Me (feat. CIZA, Marcus Harvey and Geeloum)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28da236ea7597bf274879225373bb71d42576a7980eb4dd51af17f0f926c3f1d. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ZA56E2101678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bb98a70eea0dbc0ffc52815955d5e41f91f9dae529763aec9ec2fe2d57cbeb. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/QZDA82059186.