Martin Courtney IV (born September 28, 1985) is an American musician and the frontman of the American indie rock band Real Estate. In 2015, Courtney also released his first solo album, Many Moons, fo
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 0xbeff828fe9fb6e7c18a1caa8154b83b115aba33d3c4974b33ab1ad7e42223ced. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87e16dd1-72c9-48b4-bb0c-42cfd60ee84d.json and https://artists.proofprofile.net/proofs/artist/87e16dd1-72c9-48b4-bb0c-42cfd60ee84d.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 0x567fa907101283bac35fb100fd9b91db1151db3ef736918bc5836dffb83a134b. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/GBCEL1500345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1b7021a49b001dd0b9551f61640d7e91ccde01979f2d7a5d55e9e5332ab08e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GBCEL1500347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14602b85ae8210f8944b99167ade4a0fe63e220b3cb137ef5a93fabdef351a8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:35:16Z), 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/GBCEL1500348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37b70e379188b33d9414afb239a06612f4f83bc175f15d611a23dd788a1bf5e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBCEL1500349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67535ba04146a3bb10bb3d3fa122eeaf367e3464f55e2ca485de0cc9fe16bac. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBCEL1500350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9afb9f3becb6b04acae284d66a9403360df754d7f37c1e5f50bff8cf41f4782. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBCEL2100672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaf39a19ade6fb8071103a663da7fa4c777ea422882555a921c8ceb15fb7a2f. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/GBCEL2100673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a6c382875e71dd8d97c2b9f4959d9ea3ee7caface91ca57c0129e0f6fca71d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:06:07Z), 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/GBCEL2100677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbfbc4f262c67b839418a6a45c93818fe3807614d9c2a69becbe1c638a8b178. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:44:24Z), 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/GBCEL2100681.