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 0x40eb3bca351b614141153ff261ecebc682172a6fcf79006decd6b38c019d1d95. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b5f81ba-583b-485e-871b-05bc1580963c.json and https://artists.proofprofile.net/proofs/artist/3b5f81ba-583b-485e-871b-05bc1580963c.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 0xf67a3f562f888042eb09ee6dd19069d1165595ec85907a478db76529f8560b93. 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/USA2P2244822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c920db1246e52c829084f45ea74a39987d48bf91f7c5123a044ab164c304f4a. 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/USA2P2244827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc32fe2ac5a6b743b5f545117a5724112c108278472a59b1229b7307e1810066. 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/USA2P2244829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cdc88ac87d3e13d21ebb56595cf2fa4289719fb8a3c13a6e9f91a376619872. 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/USA2P2244825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6359b55bf975d623cc6bddda3815805a2a8659597ced3b07220a17791b3cd123. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/USA2P2244831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6ee1623a5ab5c857124d4814de4ca521e0bb203a785f687b98c9b46f60e670. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USA2P2244830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc377292e445f85c6e73cdc680375310ff4a2247cde21de436c6e4393f42392b3. 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/USA2P2244828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a46079981051c0fbbdface73d5cb2e7a14302fd491e31a0977085d2b30489d. 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/USA2P2244824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b70adf38787b748e7821d3bab48f0f59b9095396d400f6d568a3f6449d1907. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USA2P2244823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3eff756168fe34db79055d996b1672eaa35809eec93d4454ed0249175da301. 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/USA2P2244826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf62e3da3534b391abbf34312eba0d2ff5188a3b7fa95daa1046af8bf180abe5. 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/USA2P2301453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519639a0ceb8b3591afbdbd313990ecdde0541bda392ed42577379eadd5d1847. 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/USA2P2301455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1c7cfdeba31b136360060ba7c944fcc1204ce0722226da732e40bae4bd60f1. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USA2P2301454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f07b2bceba7c59c865c7bccdb79f02ccffb79ecd1651f07d2b6596e3de0a0a6. 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/USA2P2301460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52a1858deb746f4fe59d67ae140dc15a08df980d909934db43679baeafdab2f. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USA2P2104660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4554ba2d77d5f0e2da5de76403c31b9d2f892d287fa5d917ddc04709d5f9df. 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/USA2P2104668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4ec0dfd44f0159e5677e744558b13024769c00aed662fe8c16ea5fc0404bc4. 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/USA2P2104664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55a4243b77050b701483991e965d097f2691ae62859535d7772ecc21ac20fca. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/USA2P2104666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d2de7072f0f5509d20167608d80f368d437ea1b46bc2f0161b08d0d73df100. 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/USA2P2104665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f73fc79711396d8efa97a9db54cfc71f3fc5c3681f8b944804455a9f6457001. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA2P2104659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ceca4bea57ee4737d61bb62ff603310d2a3deb4c989931c80043240e2c61f4e. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USA2P2104667.
Ahriman Railway Foundry Co. - Sensient Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4453e966c64f75cd12d6bdad6c532799e7114bf52b3097d86c432c8684152fad. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/AUZR10700669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db92764170880b4a3da39adcd22b9c425fbd153947a64f8b3760cec763a17fd. 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/DKZVA1160904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94a32f9c942265d747454f1dedc98abd7955e4beabb64569054212839246321. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USA2P2422673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094126585c750ac11bb54b18faae3523b6bc4b0fdf9adcbb753122dd46f4537f. 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/AUZR10700219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4039858f6be50417098427a084f5459bae70f01a76a7a7729fda1bc88a8ac73. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/USQY51733077.
308 Negra Arroya Lane (Florian Msk Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc744943de07806cf798113852775632f1380d0bc6095b8d168dfbf8cb8ba60f8. 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/AUZR10700612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4296dac098498b361f1f65c021e5fb5d670034f3d398a7338dec8a6bd811d6. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USA2P1815642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9e9e3fe5e9af4e3a369148c4cc8f56e86c891e8f01338fe194f05e065a01c6. 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/AUZR10700094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe872dcf5c45caac5765706743de50de5ce1cdf706ce6ae85411b7dbdf4aa245. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/USA2P2136350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc8368d6a0751b056d2f55efc517e6b5a90c74a24be9123bf186a7625d04442. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USA2P2211278.