thumb|alt=MiyaGi & Эндшпиль during a concert in Moscow in 2016|MiyaGi & Эндшпиль during a concert in Moscow in 2016 Miyagi & Эндшпиль is a Russian hookah rap duo from the city of Vladikavkaz, North Os
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 0x3910bac4323f5cc210877fbf7b3ae18dcaff823376e53dfe5c77e01c7036cb77. 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/6e51725b-5957-4e64-b3df-f8f59f3ea0b1.json and https://artists.proofprofile.net/proofs/artist/6e51725b-5957-4e64-b3df-f8f59f3ea0b1.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 0xe3a726087ccab4ced38b66f3c9e11722045dd9d3a25ee508fb41f233fbd91013. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX202043507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc8655c0c64383a60095d846e489b81542e62a80811912649d5f20e440c1d24. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX202043508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b36017c9808fc04582b9b7cff49477b9e35173f1d3beeb07b5a9713d896705a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX202043509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e4fb0d28fe2b4bff276e1ee6d1cf027a36cd3cd6c586246f7238813c9da5c5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX202043510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb67ff12bf393da184fc79ff42f428770ea831660a31a1a75718345a43e97d72. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX202043511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa269a858c2614f58699cd39f6c485daf1f218900ac9847b2dd57b05f4e9b2547. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX202043512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51c982b212583013f25db22a9dbd1cab44ba7144c3474d475a4fe66e28b3840. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX202043513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939eb20d22287d01f9ce5016f72859b105c2e5f6e31c0b80722f915eef584bae. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX202043514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422a03456f7b84d75038e7087d2c24cad352d3d566ea53608c702b57b14aba87. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX202043515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b8f20348bc2fec2879841f527c8b03abceb8e47a0b29db66dcf4d4c5c9f9fa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR10S2204049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5baf1f763f7a05d5b2da4d126f5773116894901630a73eb63de52a93653073c8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX872135055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88e10620ebfe8d0d9d00be8f2a6cde77607f8bed430390ba79e2e1ac526e048. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX202120502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf192de5eb641d498fd113f1f7f7aa80b1563946e900bee189ae0a9e794404466. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR59R2130358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78b54aa1793a2d0351f3ef8f542e03fc50d331ad3a1f2ee99de009bf52d5154. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA062031816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ba8b7b0d2e1fbdc2e6d5347ae05b92cef0afacdcca6486367d8a7e5a065f28. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR26V2078880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3af907dcc277915698936ecde9e42a90d729fae27f75e2b5eb659885cadc4e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X42090962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9c46384a1e1b708f09391eab41641b9942c6ea6db7a61c4c6c45ece2b8927e. 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/FR2X42019424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f70d3d9dd37ab6ecb0b3196265508e0cd5c71480653b79671583068b694492. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX452089228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa7a8e1b9e0b7c58d1190e51cc192631810ff6c64f36ab01b8084b6db9e04cc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR10S2013809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437f0c187fbbb2b979e65d7a5eceb326dbb037cd3dd50909dca89febd88a6739. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X41930099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6cf089908c763552d778dfe9486e243843ae3f68a2fb1ba6298f0968771bea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR10S1912638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf835518e99a2af915b87eafa61c46be922f96ad77163c1460a73b83854a8e80d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X41980092.