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 0xd39e6101762b309e777146dd4f9d4f5095eba5594d442e4b878d170ea03ec76a. 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/f2cc384f-fe0c-4444-88d1-493a651ca55a.json and https://artists.proofprofile.net/proofs/artist/f2cc384f-fe0c-4444-88d1-493a651ca55a.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 0x1b6aca3db1e580312c6939d86c797b64f7fcf251ce949926c2dc1ea33d4109a1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHNA2165220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe833e20f7c79ae0eb28d04037dc32219ec5a2a43da034212e584eef0decb068f. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZK6K2142701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70bfe060ad58dadf8317413e846f7e56fd1cb9c4189a303c4e51bd3ec71442d. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZK6G2181841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999e45954b548783bb099fb9c41d94fe4e001872ca07cfdfc5cb647a819ebcad. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6G2181842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f5f79e9450e44114949705d65eaf486f268d48e9a1c0386eebacf43949431f. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZK6G2181848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e1dc3bb43030296dc6f8256a07694fb4c6de3b642d95adc99ddf96ca3861ae. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6G2181852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1bf40387cb97eff1232d4043e447438f4272c51696fb1bccbbb279fee9bcf4. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/QZK6G2181854.
Deer in the Headlights (Vs Zardy FANMADE SONG)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f2d2c9bedc081a65baf592088edc2e926b579c891b88a65821cd1d1023231e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWR2102290.
Friday Night Realmin: Original Soundtrack
OctJulio's Mid-Fight Masses (FANMADE MFM SONGS), Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e42e540a9db3f41af800e41fa6a16a45b8aa247a6ce37c387e336cd158f7824. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWU2165173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442e9b31595360dbd11016e04b148e534c97940967906b83cf3f80bd39a22d6e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNWV2151104.
Friday Night Funkin: Electrum - Cracked Reality (Concept Zardy Week)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ced1512bf5ff6ed31b17f46bd17c9b661c2d5602d591ad42b0ce251b26f0c0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTAU2104307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b170a33bbaaddcf2497f367a36840f8c9c005cb36dfae7ef60cbd55b89803d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZES62215517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9ab4c233a83ec5ba397449be87b157bb231a4ef426424c9ecac5d5c3fdfa03. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QZHN42297834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e47ff204b38d0ba69bf940035185ac5efaed548e06b5aabdb26c1f2a7aa948. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZHN72212672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263e78a65538c82a4c4e6b439099a2d8a7d9c4a5dd5da8ed51d6a4a21cf14632. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN72268062.
Song That Will Play When You Fight Sans (Original)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c62a0547e79b9180c6531c0e2d1d4646c46d3e99caadba27b90b50439a4b1f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN82278195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d360cc01aa2669e384d179adeca3a3f345c339287d1f413de7f9047cbf1025. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZHN92289239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94e81ed969b65a65bc5aa28b097adf87354852b387fe1602a88347742f494f8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZK6N2227867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096f1e2388c28ad8feef2af1aee667c3d4699c5a0c9b42c2fbdad39472f14141. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/QZK6M2277056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d11fb8236a50f5664e9e833fa648c29463a813267eb8d06817703877d3f8b9. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZK6K2293910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98572efdc8a609be4aec943046f729b1a32cfda9fef6f53611b181d05f1ae04e. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZK6H2292563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e82256daf786c653a2a4a42dcc1025cb5158f1bee8905f5ae8d3ad3092162b2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZMEP2275430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274d95600a257fa11e02d41fb1e4dd63a8582f43b504c14e8e7556e37d160e19. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMEP2275431.
Soulless (2.5 Sonic.exe Build) - Electrum Take
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacfbf836b45d99f038de994ff6a866aac46403c31ab3704dea5ecd3bedf26bb. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZMEP2275433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dac48788f40283702ead0c447b056909079bb07653b75b4943ed075195f6f3b. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/QZMEP2275434.