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 0x1943f8a1aba23abdede64da2a0e1dc6400293db210abeab9ff9d8cc1da0b00b3. 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/e88c0a77-fa21-45e7-8a34-4bfaa6cac684.json and https://artists.proofprofile.net/proofs/artist/e88c0a77-fa21-45e7-8a34-4bfaa6cac684.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 0x82b323564d545ad42a1d6fd8b548837664078e5a7311f9ff8222a3c141ae11d4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJX31828089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77b17a472f1744dec55e6153a84acf1be1fa3df588c5fb7d855708ad910180e. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GBJX32230013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48db03d6be1173fe661fc63a2f2d7be4e6d61a6c17de7d6d6da4bd39d970075. Chain 2 (Bitcoin): anchored in block 957835 (2026-07-13T09:48:24Z), 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/GBJX32230017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04d1156c4fa2d0f91d62defbaa37baba370025f360226e614dbc66fb4a97d6b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJX32230018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33197296ffd9c655f3419cfdbe10f85f109b7f27d526406bd5eacc3c9416e854. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJX32230019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358372012182cbb2660fd908da6775b29c885ce08adc55434e135ef55153914b. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GBJX32230020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71597849e3e0578892612ba8f7a71c8c86c0a1636e1602dabdb4800f36488c0d. 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/QM4TW2408636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344856472bd11574bd4c3b6afaaba80c5923a43572ca8f107fa9ffa91ea812c3. 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/QM4TW2408638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db50d2367a0e7ddcf79770a41f2dac353c3e9117ed55c3fee901c4d19b3092e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEY472481401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a88d93e6c0ceb831387e195b405808d87a1527ed4801622776364472e8b7f0b. 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/QMFMF2353729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21512c163559179ac2050eb783ceab043f91bee000da79811138b1114ee53fb5. 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/QMFMG2317727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2416e0c49d44864351686ec4ca89ca524d1dbeed0de3e58b25bd9f0da80226. 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/QMBZ92320931.
Clickbait (This Ain't Hollywood) - DJ Tennis Remix
Clickbait (This Ain't Hollywood) [DJ Tennis Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6240804c6292e09dc088befccad77c6e4690835e31e5fafce56e1ab5af5c9eb9. 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/QMDA62397386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2416e0c49d44864351686ec4ca89ca524d1dbeed0de3e58b25bd9f0da80226. 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/QMBZ92320931.