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 0xb926bd46777a4d1e6bea62d1881b2916921e7e0ab200171549af39c6d7edf79f. 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/932541a8-7691-46f1-bc29-ddd7ca63df92.json and https://artists.proofprofile.net/proofs/artist/932541a8-7691-46f1-bc29-ddd7ca63df92.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3723140da51e99cff9f05058058ca7391317eec3c125976dd52c70d65a384b7b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR3R21225058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308d0340c900fe768511465d64890c999b7556e39727f76e596a0d59bc7d59b4. 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/NLS161701070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37220daf8be8772da955ca154a028b641781056b8e9ccb36095f08e9a80cb57a. 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/CHE211900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798cc63be7c66a5f68066ec12f5797dc66e2aa3139ef2f70c73a50f2080f1b09. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR3R22199004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8465b3b443ab721159586cf41f61a90778351658824eff86cf60ec981209a633. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR3R22199006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0690bdcceb846f2c22dce87bd2ac6441b891bfe06e0f81e708a4cc2a46b535b9. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:08:39Z), 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/FR3R22199010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed47215a2a22350e987bb198591f821ad443b91b7f82c3ef20804d8c7850096. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FXQ692200381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6374116c30249bc3451a8c009d9b587f19e5135a2f55004a343e65931cb7e98c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:08:16Z), 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/FR3R22399018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4455ba253b182d467b44d93e13cceae6de63f42fff063517adedbb22763481. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/FR3R22499013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a1c17139bfe8d3bc4f6de6383eaeeb86f93c3ae8d2a420c66b116bf4053297. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR3R22499015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d655e9448f7aedc8e600c73a0838871cc909c2b8dcd0853499f160baa3b871. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/NLZ3R2500133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e77f985701f3107cb5655e44f3dea4ab082b8400488064739d8c13a78156a6. 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/GBKQU2138418.
Lockdown - Raziel & The Painkillers Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb2cdb3840bd1fcef21e0207f79e7ccd51f6d5d29ee2c75ef204e7dc2946839. 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/GBKQU2138422.
Psiko x Hysta -Lockdown - Talasemik Remix
Psiko x Hysta -Lockdown (Talasemik Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcf076487d0cdbf97fc04b2d961c2ea41bf523731e0e086a89362fe8dfef2b2. 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/QZMHN2072709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7e7486496f9ce66b82eab75b0638809222b8734aa15920cf19df1b8fdaf753. 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/FXQ692000221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5959317d42f84252c93b9231ae63d95c452501dabe000cf6ce3afcf4d397a05. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2138420.
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