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 0xee9a1db6b9ae6eadf12797b419b1611993415d5e279c277d1e6ded73e75513be. 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/a16bf297-41cc-47ca-b8b6-176d55967b38.json and https://artists.proofprofile.net/proofs/artist/a16bf297-41cc-47ca-b8b6-176d55967b38.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 0x43de0560157748fe08a41fdf60d08eea1aad914f123c11775bca2e78c8cb5eab. 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/DEBZ70900477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93ea11d41216e320cc24242b1fa12df576b4349b622be244d0dbd57702b5809. 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/DEBZ70900478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de82455c4084e8c6f1225fa026b8404a3dd3a381cfb87a4282c6a272a1d02ec. 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/DEBZ70900479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51eb7b1a3da6160a6457fb38ecc3abf0cece6689ad59a6822cf55e4d18b48ac6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEBZ70900481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df4127afc277f7ffad6a51213477cdc345937a96d1b5ed8453ae0c3457b7f7c. 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/DEBZ72200046.
Every Now and Then - Rework by Love + Revenge
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8e7f60c3e8eae3dc8b01a5f8739f0ab5f28f4733d346eb8265dbeb58e125e3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEBZ72200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0562724396a6378bf888cf60c05b5a7963b2a622266f871e6f9d67a4e6aee0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEBZ72200048.
Every Now and Then - Imperative Reaction RMX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e815ff59a84b4cda91fb6724a7840b955a151a70bf67fd15f15973260bd35a. 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/DEBZ72200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6350768d2ce35f8d56238d6382d3234735abf9d0afcf35c5abd18edf62efdaca. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBZ72200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e08e2d9987808364d61ccf05c910e9238cb43ab66c9b8e99fdc399cd229abcf. 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/DEBZ72200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52891a3df89c581bdbabbd95c1cc9c3a20771b4e473642f820f4f656c39e4115. 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/DEBZ72200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bb0955d869b9d762a3cc7eeecbf525454605d2fab553e2126535f2bdec43f4. 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/DEBZ71200597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8167a4627d57813dd8bb9d2f035abb6ef68e5e3fe3c5a752e131e52d82835b8f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEMM22000032.
Immortal - Icon Of Coil Mix by Sebastian Komor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d827fc2ed6d9cf0ce4f02bb2a3079d5f13763d673501488bfb40906ad7acc68. 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/US57M1177721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04e0f1e87af27dd8a03bda35d7812345bd3e8141b15fee425b476d26bec3012. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEBZ71400267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d121aca6311db65ff2bb033aed42832f1272bf65ca5397875ea8e69bc8eced. 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/DEBZ71700214.