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 0x4011db14692756427904b279ddd5124c8e84a555248a4fc348b92ae61e949317. 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/7feeb7b1-837f-4241-9776-3e17b8927dac.json and https://artists.proofprofile.net/proofs/artist/7feeb7b1-837f-4241-9776-3e17b8927dac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hard Revolution: Official Cataclysm Anthem (Radio Edit)
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 0x8c427841639c84dd135abacb55b62bbdf7777e7536a6f267872c25ea2c499cce. 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/QZNWV2123434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf38aa42072691e666cdb3575432f2e0a846f9008310fb5b22e440fa8e319dd0. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNWX2151606.
Hard Resistance (Official Sick Events Anthem) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d40e1605e452e327f67f0254974c0bbfd7ad74a309197d8913bb4266e5bb5c3. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZTAU2128191.
Age of Core (Frenchcore Overload Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd439c41ab70cbc5b539190c9c27d939ad1dd57b11131d4269b069a794c12b177. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZTB62211394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5ff9b5da93ce00f28662cc7f43537f97d48a11a2e79052fa9386c01fcbb6f2. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZDA52359873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27f0ad80c9a41e59f963ea1e90d96d5b75c2d0cbf7b6600e2b9c72fe00f1917. 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/QZES72383440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44dad978d96ae87d879a0e585c2e52716a7e6460d2172738d9cd0cec886122d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZES92362965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668607011e834ea570b991ec8a55f3e0fec52e038ab93192ebe318706a587ae2. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZHN92318415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fee137495da26931457f6775a67eb4d991b088a8da71292d24b95c295a4210. 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/QZHNC2347839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63f415a8eeb558747e5c80023f290650253451c48bdd8e00bfe05049e97a0ef. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZTB72329818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d847b82c069f4a179404bf57d92f752252b8e870569fdfb115387e8d0936ff. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QZWFJ2316520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db41b718b7bc08c24e2086cbc76b4a07f6f6fd320623f22199d1a132c1a787f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTB42481345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5f828bc4f482c7e18813e3c611faf98a080685fa1e36ae3bc39c06e1b6cfba. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZZ7T2431894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f216c35de586d0cdfbd26e82ca912bd8e0bce8f8eea8efe37bbb22e89fbcbe. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZZ7X2425892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c5b6e4e6cddcbd642bef2c13ccd2bfc6cf5cc701253602c7f6b8e1bf6cd0cf. Chain 2 (Bitcoin): anchored in block 959147 (2026-07-22T15:43:44Z), 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/QZZ7K2571287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb043910403f97df15a866af4f98539bd91b0e2c8b324bf10f6e519fd97b37296. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DE1JN2353482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd5c5ab11b57b4a043764bd19c6c1fee0194c949fd659ea8c54b83618372f80. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEAR42335048.