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 0xa722f5068619a95adf7f31c93a78d19ab14fd51d4d4d075a4281d90e9a6ffbd1. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d841955-eb6a-4bca-b6fa-fa233fb426b2.json and https://artists.proofprofile.net/proofs/artist/5d841955-eb6a-4bca-b6fa-fa233fb426b2.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 0x73b064ab0225bd58423c81a4d8016db480a0761b7de8bd574e3139655d1df843. 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/USMH92378328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b87c627eae3a969d7c54cde17a4cf81d6ee2a6509a98cdc882457ba68db8df1. 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/USMH92378333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50957ad72527e65e8953708278167d14ee12f61ac3d1b68d73e74c16222107da. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USMH92378337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcbb131d3a843e6a01f16fb41d1587b16bcbe1cc8379c101867fa78d43c138d. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USMH92378329.
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 0x4958c409cc1b6210599f23f8fb386748cf5900dbb64833cd86c8c7eed97007c8. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USMH92378330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe930c9d57602e2172ce78c41e233c123891e0cd83b65e540e1acf5c8bf52bdd8. 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/USMH92378331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62973cc8c4f6f4346f97eee47d47767635dc06716dd32f8676822fcf8c8620c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USMH92378335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05622adca02ab6dfa81b629554f568f794661aa280073c4b3c90d982d84c68bd. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USMH92378336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337f533fecde86a14e19f4fb7d81b0649c91a5200678185f11a61407770c24d8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USMH92378338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd248cc4a12d88dd97692e6be7ea49e677639c3ad71f2853b555a6967b6bad54a. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USMH92378339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd17590841a79cac2976e4188a4832be205572d7d85a28ecd892f647f809ee8. 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/USHM21951785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dea901e6910318d20098abf628fdaaa32af17aee7e99f09ea0d5cc3230f4fe. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USHM21951777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291fb488fff78d7d09e27cfe582997dee7db2932548698eabeb5b16e6369e269. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/USHM21951779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739d142ad0eda2a2bdde226950bfb4cf8efc84bfb14cd4fe06417b859c1baa6b. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USHM21951780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5873b42a313ef6b501f015d57513e295cddc028acc9280bf3bbc110edbc902. 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/USHM21951781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020e2b4c50ece2154f7c4ce47b7b015c02849f83d26f0db36681f1dd529d6b42. 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/USHM91434906.
Menace With a Gift (feat. M-Deini, Knight & Capcizza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba1fba165f64f34fe2e70499c4d762130dd2b290bb59dc4d4ba55c495fa44e7. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USHM91434907.
Heroin Republic (feat. Lost Children of Babylon & Dainjamental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0022390328372cb064974f24ee12b08a588cfa1a3ba5bb43fbfd241406773b2. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USHM91434913.
Judgement Day (feat. Maria Lynn, Kollsion & Legacy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8ed0086538ff711f712f79307d2d570247cff9b38a6a14491ab11b4bdb99dd. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USHM91434914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a1002fbeb12f42a1c977d3d032dbedefa2538f36cf07fdd67424f8bb9803ec. 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/USDY42370814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be7f4a05e925811d4f80d7a2b9e5edb2ede74d68247de8e3eb102a8ac82d391. 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/USCGH2359319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d60f0e3dff27c2b8513320e0f5312e57d7608d7b291a9ab7fea97144ebe412. 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/USCGH2359321.
Hate It Or Love It, Pt. Infinity (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33514b23a6d01588040cdcc13fa1b04632a455f1fe05e7e7323bb558ae1e4dfa. 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/USCGH2359323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2608c6313b47066030f8df20140448bc0743e4b1c42317a3af6b00f6ec5e01f4. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USCGH2359320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c63e5779a8103d57d216bba2817d5caf0c56db3484946390284712ae8bcc67. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USCGH2359322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb36b2220d2397deededfe8a58651defb4f5a051494087dac2cd7f7aab8d04b5. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USCGH2359324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cdc100aa1920e3cd701d0d0cf016a79bc8c82423d3311aab3fa996f4a827b0. 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/USL4Q2216355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b66bade115796c06970a446b77dc3a9390499d7978827976ee391b1ef060f7. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/USHM92063585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4509623fd648a9670900cda252bc1c9bb96959218319ddec7f12ce20c3ad8e7d. 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/USHM22084879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717ebc57efdbe042e3d58ce3524e95fba31d998303eaf7510ed2d9afc776065a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTAY2398911.