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 0x82d6ad9685bfe1f8c50f46623eda7bb96b8cacef0f74307b96507507dbf69a64. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9d1cdf7-3059-4036-ad8c-f112b14b0c37.json and https://artists.proofprofile.net/proofs/artist/f9d1cdf7-3059-4036-ad8c-f112b14b0c37.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 0xb623a4c9f3ec78b484dc9b0483b3710b392812308d8273cf752731c4eac4117b. 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/US3M51216502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5373ff6a57cc4f254b36536888218221bef96f9275e813df69474368a4c0e9. 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/US3M51216505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afd181a6c5b6b1ffb4ed0631ae28ea07bdd5a79d3f68e45a7d9fd40ae592ae1. 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/US3M51216506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d5476b29e042d1aaebbe57723464627d8cda5b47dfc3c1045b3968fe490359. 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/US3M51216508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac32d724e5ffc04ac6267cd4afa64b60dc7f6d57c166e785fa4858861bd7795d. 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/US3M51216511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04d8ad6d0b87e40735b5353ab61753a9708e9b1f47f348aa97c0f228412b08f. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/US3M51216501.
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 0xbd6014e4cf03c062eb5e0110de7d64f57cfb6a03078c2a1711fcf681956f8953. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/US3M51216503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440e81e0888b9e171dbc85a6663227400baa7edb871e8c7b3329703a26d0078f. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/US3M51216504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569d474180005860803d2f602d57124c8c46019f8e03d8c0732a5b818c303d40. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/US3M51216507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc587c7ab5bc61919d466b6bec294e9a58c2dbde45edb5afa5b297b02821509c8. 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/US3M51216510.
Moscow, Pt.2 (feat. Marc Bonilla) [Live, Dom Kino, Moscow, 2008]
Moscow, Pt. 1 (feat. Marc Bonilla) [Live, Dom Kino, Moscow, 2008]
Piano Concerto: 3rd Movement (feat. Marc Bonilla) - Live, Dom Kino, Moscow, 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0c8646140aaebfe83e00c231a198d4ebec527e6f2fa103898c10f126e131e3. 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/GX38V2300351.
Karn Evil 9: 1st Impression, Pt. 2 (feat. Marc Bonilla) - Live, Dom Kino, Moscow, 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e00abda8151f6b2137c699cbe91b90194b3d67b65c9611763dda479dc626ab. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GX38V2300350.
Touch And Go (feat. Marc Bonilla) - Live, Dom Kino, Moscow, 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6118c0587bdf74793622aa73ded3718a28c8cebe012ba89543caa1cac57fafc7. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GX38V2300354.
Lucky Man (feat. Marc Bonilla) - Live, Dom Kino, Moscow, 2008
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2043391ab6fbf7f6e82db24be38d1c0aa04eee67683a9d28d2ea91c740efe5. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GX38V2300355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b096ff282fa7cf414001c5d99230c3aca6bb415b4bf22403ffc2a65b4e9f2a3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GX38V2300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92be74b50bd65e7166b3c2cb954e22b5ced8c0292537ee2f0ebdcdc5de9109a7. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/GX38V2300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759569dff539cf1f6dc786540f4621dc0073726cbfdf0bb8e6cac4d939f3e5d1. 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/US3M50994002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd8eb37e460e19365115b1e25bd656b4322989aa22f1d89b4db681843a11118. 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/US3M50994003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab734f4dc9a5dcaa86992833265796c064dff82d0109ea90fe6466766c61b85e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:55:30Z), 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/US3M50994004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0bc3c25f851c0fc2d3234eb11304dca80f037bffd334414e9283720a48ea77. 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/US3M50994005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbe3c135a60889b7add3f46e5eb38b6555519d75d40403a75bbe4029c95e3e8. 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/US3M50994011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2faa67547cf1b351afe804f2c413e9b79a43c66aea8970c9a40f7e2d9d6bb7cc. 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/US3M50994012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1dc77c29841ce2bb6ed9bd19a17171f8acb7aaa1719259fcf15bce55c16d5ef. 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/US3M50994015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a34b66265ca37083a3cecda18147f6d171d5903370d45722faea4bb6486d25. 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/US3M50994017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b36bdb2c47344e27a3ae1fc20a9e88f46140aa7f9bda0577569ef91ec5d318. 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/US3M50994018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63836d2bba7304d6518120e4f99ec0d6db4f429c113af64b5e33c78db565f8c9. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/US3M50994001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7423c8d8b6bee75f6c920fd5cd3b54541ff3251311d1edc95082108c0dd2cb3. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/US3M50994006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2f32133b116b06f214b3523103cea11c1874b114839d08566d644ad1929d0c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US3M50994007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324f78fdc2257981fc6d29016b13a82834fb88e81396fc1af6a65c1505217400. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US3M50994009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ba93874c667f4f83f363eae9b4f7e904c0cb808e1c79bfe3d046ef6d721224. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/US3M50994010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76013f491d46035dcbc75c4dfa21a27453913adbbb1f3f96f314097e220c4866. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/US3M50994013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60461a496b7568979e343882b65f52c562683f85c74177b4c564dded362422e9. 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/US3M50994014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d056ae8f5d62337fcffc921d52b6c30faa9cb079885edf666e0131c91aa4fa. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/US3M50994016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fde8d3b30f5ad89f86a84b5c99fbaff1bc2527d81af351ba1c97365c8140e3. 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/US3M50994019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388dfaeffa9e0c9750822afd3b2fa164eb5f3e74e6354fde9e5d34bf5dedcf5d. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/US3M50994020.