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 0x5292268756746e4b90864797385f3b6cce42b9aecda259702549b54e1b603825. 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/7f61b5f3-2381-40e1-8d4e-c5bca296c5d7.json and https://artists.proofprofile.net/proofs/artist/7f61b5f3-2381-40e1-8d4e-c5bca296c5d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
100 Évet Várnék (Dr Skull x Denoiser Remix 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6b9b7e41e9759f50eea656280fc12c529726c31905c6b4a459278793d70e6a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HUA5Q2200065.
100 Évet Várnék (Dr Skull x Denoiser Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3a99dfc9667a5f54ff4abffe47693bc88b5efe23082455a3c4eb23c504663e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:16:43Z), 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/HUA5Q2200062.
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 0x17af7243a4dca6bf43737753f8c0641976874354ff0e681daaa0eeaf7bcda715. 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/HUA5Q2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e217757c3cef13b6599d6d3909a5ea66f6330cec6ddc7c9524271fdab8ab0eb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUA5Q2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c660f7534189bf363de36818dd559477e386a569704c94ccd3e4766ede9e02d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HUA5Q2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889fd2be288e059c21b28ede047b5c6274efb096862fbce48d42539e492a5423. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HUA5Q2300038.
Páratlan Páros (Joe Wild x Modesty’s Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a4cf34affd63e8c0fa376000d175ba041bdadd92b09bf832a16ccfdf03a5c6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HUA5Q2300058.
Páratlan Páros (Mr. Jones & Antoan Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115fee8d7d22aa8f3c7a600edc5475fb5d2dc42f6ea5f20a33395001a5778203. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HUA5Q2300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10de41ccf34dd7c3110e6fa4c5cfc32f9afcf8959953ca9a63d93d738932a53f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUA5Q1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce997d7e0dc5bd3afceb35c43afa24d1ee60abad397cd5b434d1d9dcc9c96bdd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HUA5Q1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fedd9c30a5c89da1c40cc5d32169a696103ca3e3b491f9586d48e98c176cd3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HUA5Q1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa959818aaebe9cc9f2158e78e07ab56dbfa4abbf13214fff25e76b83e5931ed7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HUA5Q1500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c5d2f2bed3fd9514d9a87ad6ac62d6c582689ca7796a68908d0e4224821f02. 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/HUA5Q1500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2927cb0de0d18b742c4b2694c210f35c1cda802ebbe61b25884ecf3b6e96a78. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUA5Q2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09606598c51dbd6e586356827a124fd72c10889293c8191509bbc22adb1c27f9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HUA5Q1500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0dc32ca888c6f27ccb15b720224508555da9540626eba3147397a6ff95bd00. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUA5Q1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5c8da8761da0cf0137bf17424dd3055a25e23b0c80a110928f3aa901a6a336. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HUA5Q1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc24dff224a95ada9045ba317ccacede906fe8c8dd2631fe35a2d217ba72b98. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HUA5Q1500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb512810290bbc9e078154e00a381b42901fdaba46afed06283f949f1a0ade317. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUA5Q1500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075e295c464aefdcd0aa81ecb9e271679169d320ec5dc8ab8463bae488b5a474. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUA5Q1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23383e9225fa34660a86ba32f18af263fb1846169ca516db6e71a5614c12dd2d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUA5Q2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0512e8a7f48d42a3509f005403a27ed5c382f2023d6bbf44e8ad1177a4d033. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUA5Q1500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fd4bb6a64866f99d77817da1cb20e89b0b952ea3d7763fb8d0b9fb546c4326. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUA5Q1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e951c5b8bb2fba37f2814bf521a95b8c55d9c915a7c313106b6c35a5f01f30d. 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/HUA5Q1500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b875af112a2b5de8f791d1a13e0147f9ad927de4fcac683893af13a4ea574b9. 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/HUA5Q2300043.