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 0x932d27a4581b149fee5f0980ee1e64171498ef526b37a3957685cce8d2b75a0e. 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/9eeb6255-abf9-44fb-859c-6eeab6c1354a.json and https://artists.proofprofile.net/proofs/artist/9eeb6255-abf9-44fb-859c-6eeab6c1354a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x6d254f9f604ae50458d8c7b7e1ee87fbfb355ef6a6db32d88e1a780677b056c9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252789 — a six-check JSON result.
Lamborghini Aventador LP720-4 Armytrix Header back Titanium Valvetronic Exhaust
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cb4c46de9f2a3734b88f4f5b3790806f5269609d02e3634c0e1c9ace79a0a5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252790 — a six-check JSON result.
Lamborghini Aventador SVJ crazy loud exhaust
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae0cbd199c04e09f1fb7a5694adaf0db13254b33d0c7493b21d8802dd382210. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252793 — a six-check JSON result.
Lamborghini Aventador SVJ Gintani Exhaust Screaming V12 Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db2c19eccadf41d563541ca9633a8a6396ac93627938573b5043708da44418d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252797 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1068a5e0cbc6a31d80075576b995ce6e3b869725e92e797aaea5fe42cf05ef. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252798 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbb7ec9676727a5ee53b088a71fb2c06d2b573152c5f5caa387e3cf1b79dfdd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252800 — a six-check JSON result.
Jet Engine Sounds White Noise For Studying and Work From Home
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe281bcced6d27c16785ab3bfd9701c067d9b19f6e1a8e907abf31ddb144fe5f7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252818 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bafe728374f1c733f2ac896a444ca2c8d1c34a1493fec84dac0b1c7e480beeb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252820 — a six-check JSON result.
Ferrari F1 F2002 Pure V10 Exhaust Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6055e555b6c4bd553db2a03405967ef55ee26e0793db59902f2900ec6597066. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252824 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e3f084258d304f69c6e7688d2259fd490c4942cbc4ccf2ac510e3c7c0e6294. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252825 — a six-check JSON result.
Mercedes A45 S AMG with Decat Milltek Exhaust - Launch Controls and Accelerations
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d16b4057eb155d92dfd67b1dd3bb5667939fa0e53a1eb688df774ae5d639ae. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252831 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd030b1f5ddef986ff0c79974ee02937c3b433247e7088e67ab7f6295d0213588. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252843 — a six-check JSON result.
Porsche 992 GT3 feat. Akrapovic Titanium Exhaust System Start Up, Revs and Dyno Pulls
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6ac399f8a9a2115ea7b2d23891f56caedff717b99e828909584f97281b88b0. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252844 — a six-check JSON result.
Koenigsegg Agera R in Closed Parking Garage
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7468c81aabb03a632e4cb5028c21d834313b0ad5121000d9237aab0d9828649. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252846 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fded65d4f9003796b943639bfca0872392474a1dbca49a84809f4480ee29da2. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252849 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c93fa8957c0db6a3ea2f67052c47cc10555c0b05c8d302607b8c2290edd6e50. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252853 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2b209c2044af8aaed09724d6682af29539b12ec9208c0677f6890f55f9940a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252865 — a six-check JSON result.
Pagani Huayra R with Exhaust 9000rpm NA V12 Engine Start Up, Revs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c4ad717b214c4bb2a6c7ffc5dc4cab6b9d33927adcf14da50c01f02cdf1848. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252871 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccbfbb6dab344b27e6a8006aff0338b3ab6e447acb438414e25e24689575ed4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252953 — a six-check JSON result.
Flames and Bangs 2000HP GT-R, Capristo Turbo S, 1250HP Supra, Skyline R34, Armytrix SVJ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d749888042e75434b53e43036f273969c6534389bcfdd55bfa99f1a1ea6a124. Chain 2 (Bitcoin): anchored in block 957839 (2026-07-13T10:06:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252955 — a six-check JSON result.
2010 Suzuki GSX1300R Hayabusa US Yoshimura R 77 Slip-On Exhaust Sound
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cd89655163676b61de1f9b9abaed3e9fed88009e363c5136855ee8838006b3. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2252960 — a six-check JSON result.