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 0x8f49beebb2d58696e41745f251ee28a6499186f7215bbe4ce007cbfe79a0e678. 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/c644c026-12a0-413b-a6d6-1b0104aa7f04.json and https://artists.proofprofile.net/proofs/artist/c644c026-12a0-413b-a6d6-1b0104aa7f04.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 0xf122447eed16bc239eaa7a6d0f8d1c8263f0761146b1165a0aca4decc47309d9. 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/CBB9D2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4a21a0469a08e0ebeccd2fce58877684ba5457b9200109347774b0505b27a3. 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/CBB9D2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eae16e52501b221d45cbf2126a02aee77388811849600da631584d14e69215b. 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/CBB9D2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129e1e8d068aced44666f6b81f2c1fca6232861d09a2f07738a2a0175c716b5a. 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/CBB9D2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce38fdfad0121583de2083ef171fb8449b625256254252b2ab97a1240f69dfc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CBB9D2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5055c032c8370fbd3d08e09b8fe7c3b977401c7cac436d3cdf1c5977eca741b1. 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/CAS741887201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd1a2e4e79531e0da3afccb95711124b2f14f7abecbc5c1244ac20e82cd048f. 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/CAS741887205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809eba67ac9473623e7a7b386eca5b256c5f75d4f5918652f686c4253ec73cf7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAS741887206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8d2617ad6c8b443c76c263e1c660d472ca7e156340b15544a1d1cb55458785. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CAS741887207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f87ce73e14d4a78d0d96f0cef11745aa0ace98781eb03b9b9239d078252b1d. 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/CAS741887208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd9be65cbfe4506b093459d90138464adf5eb783cb98c6e054239be43ece0eb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CAS741887211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd54bb690eff73fcb9af8089d298af0f4ade7473ef533cb8c7e344a7ef694647. 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/CAS741887203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cbcf2e2cf13177cef38b15ae9237c46a1f39e54a155bb6afedec89dd2426f9. 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/CAS741658003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062a8ae8254078699125a4e77470601a47aa1b66882602f6fa410d964bcd5b43. 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/CAS741658004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf004812e8dc584565190ece2982a4fa9ab8a490ece180439748b527a2ca459d8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CAS741658006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7755d0e5a83fc051cd0000fee9785ff90c77e8f0c1ec2a5d699cafcb1c5dccef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CAS741658007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545635d63c5180b48d3553149472f2abfd09389f986d6fa6dd495d17b0799afa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CAS741658008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f345ae2fed66f4d31d40777633fafa904f56ea61c5d06622d04d95357d1d1f. 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/CAS741658010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eae16e52501b221d45cbf2126a02aee77388811849600da631584d14e69215b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CBB9D2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf122447eed16bc239eaa7a6d0f8d1c8263f0761146b1165a0aca4decc47309d9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CBB9D2200002.
Personne ne pourra m'arrêter (La résistance)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710dc92fc9f7dcf1fa327a94cdc901797ea11257a296723162cc6cfc0e613065. 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/CAZB91800008.