1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4158bd30f5281c5fb54e7e3cece7dd9d12a111f9516004c4c89c4a5368a3979f. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef093c28-c024-45ba-a8cf-2a6958c74e72.json and https://artists.proofprofile.net/proofs/artist/ef093c28-c024-45ba-a8cf-2a6958c74e72.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 → block OTSBitcoinBlock must exist at that height 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 0xbd3271062dbf34c9227e80a233ecac24331075316a118e001e9c15fe57699bb4. 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/BKLE02300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e6d2b08a8815d2695362c17ec79667cd62eca505ee5d47694475ef634199b9. 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/QZGLS2511989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e25546bf0bdd355f02d08b52b20b9e7117cb84f5d353deadd0a7481badaa82b. 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/QZGLS2511990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab64deccc5eeeccd28a8ccd22dcedb0f2c3fb58c83ca587b3cf45937c170b51d. 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/QZGLS2511992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf90a087f64fcde320a1d79a60c11cd806601429a7493926cfbfd95cd9d03148. 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/QZGLS2511993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685d1eba31b7b4d6ab0776e4ddbb7a66b472044646d8ecf19e6e92d9c6b05a56. 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/QZGLS2511995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ceb6bce4a84a7a83fa72f8e3294114465ccb3b7605f7596bf6e4bad6acbd7e0. 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/BKLE02400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea88e35af648b7e10c59651d13b48d2010efbaa4c1b9affe1c07a90ed68bc8b. 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/BKLE02400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b31a04b88968d6e6c813263b5ae64d56b114d94acdf6920b4c478968525eff. 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/BKLE02400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd0155568d5ffab918f383314229a38c7a60e3611bdb2f4626c1b45fc46958e. 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/BKLE02400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf889cbdc6b25cbd2fbcbe7b78a07ccf56179d6bd1cfd696179799ebb1c72edf3. 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/BKLE02400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28b2058f84c861955180b8371e18068acee4950e6c87d091eceaef908a7df8d. 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/BKR3H2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab4df3787aa3ad778a3f7ce18b0045e8ed71967c0ac97bbbbf983c8796141cf. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/BKR3H2500004.