thumb|Wurramara performing as a part of her Adore Me Tour at the Brunswick Picture House, October 2025 thumb|Wurramara at the Brunswick Picture House, October 2025 Emily Wurramara is an Indigenous Aus
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 0x1e0c22e3992085e04805caff884807f332cc4fe131cbdf0fc51d154920ae74eb. 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/86e78f80-3a19-487f-a3eb-5d4b8bd2c739.json and https://artists.proofprofile.net/proofs/artist/86e78f80-3a19-487f-a3eb-5d4b8bd2c739.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 0x55012c1236e7dea1a1206e546bb02d46452925ba76a214c39ae28b9ebb90d4e1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AUPFH1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc139b10a9ff4ef439e3e621f6175b199dc52c14d336ad5a1f50f51801e138a4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/AUPFH1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08a31635847e79c675205bb39993ca8cc902899d7a197737d2bf1cda95afb4f. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/AUP111600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e5ba71aef53faa3ceb6023b2a7e25cb67fced144ab29678c0839dffc9119e0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUP111800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb8cc5bd939d0c1f017d3aa2e3af801bc2e1712b94b286bc76a90146e473106. 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/AUAB02400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ced5d83e76182af37cfd653e23586660afd78527b292b397dc6bef81b5dc00. 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/AUAB02400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8314316d8dbd91463f00bfa8c0b89d62b26ec508017c0d5ca0691cf8aff6bf6f. 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/AUAB02400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69930e924334bd88e964367e76d404bc8e305e7f024c2884b3028cf2726547a1. 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/AUAB02400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065f5634ceb723a88f9a506ac83c5c6427d92bc838d9f637edd32d5022be010d. 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/AUAB02400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5fc6f00f15fc91d1805cce26bcc161b3b9d45ba98c286f90620ecec9b28998. 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/AUAB02400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa24f6e1e4f0263fcc6cd3f71ffd0e257e1a5fadf8a1189e0a77270caffcb1b. 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/AUAB02400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88431d3509483760f034c0e823f818bf5e663d22d128debf1c4b0afec9c5cc9a. 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/AUAB02400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb8cc5bd939d0c1f017d3aa2e3af801bc2e1712b94b286bc76a90146e473106. 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/AUAB02400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f20008c31180f3b5fd2fb78063a5efab439b1861a0293479411a3dbe8aba24. 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/AUAB02400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0bdcbba7531691ce72d9f47f137cd91ba5ad166c8345ecdb24a646d8b8acb0. 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/AUAB02400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41601643abc950f70b0d3e453cca00c43df1f812d9f1b2b193ade91a471d0892. 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/AUAB02400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d94069839a3964d2f732ee1e42ecb3d7030e7e5355e34084845d3d686fcb9b. 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/AUAB02400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54f18af43f1fd10f6ef33c913feb46bfdf7ce07d6cfb8e5def5e8254e9becda. 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/AUGBT2303850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9311b64145908971ac6fb4d637b48255207574836a52968b9bc056c091834a9. 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/AUNV02400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fac2f7f874ab9424c94f1c082bf3ae2735ff613eba5a4c87368342af803875. 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/AUAB02200081.