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 0xb3c617fcc05e811bb5ca40eee26edd7a0caa2205a2d3373f1b0d53ba2ef2a863. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/59a028ad-4403-4914-9124-16b7dc46bdd7.json and https://artists.proofprofile.net/proofs/artist/59a028ad-4403-4914-9124-16b7dc46bdd7.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 0x05fcb9e825ce00f178b4f3f7d64baedcc00238bfc0375771cb86a281164d12a1. 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/NL8RL2443693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c1d8c29bebba1acc86f3f87a26c4f97859e2a7048126fd29d6baeb0f06873b. 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/NL8RL2427364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01594ed54a5054d6c59abc8b23bea3f1f2f256a2e5f1c092fa379d9c3580492. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NL8RL2427365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c9894e9a8d82ae838dd2196b2e5fc7d7ae9487566d88e59378850bfb1adcc4. 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/NL8RL2427366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b065faffc0ccb70e03a79282e0695580395e2b95f0beabc1b1262f56ab3ac74. 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/NL8RL2427367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4faf1bb3a20d21d993c7efbdc1238530afc01f143dfa5e2ca25fb4b02843fd. 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/QZWDE2373753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c7aa18899b39c22cc7147595d5485d689a751a30a62cfcf046139db3738d6d. 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/NLRD52202840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f182cebbf386148d1609c5e64a7f32af8280b239a4ca3e40d2933e110a7cbe. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLRD52046035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fb87d899b15ea7b5e2070a5231473dd773d60a83504c5979bbeaeef5b39ff3. 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/NLRD52045978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66b512607eb3bbc712e03b2f38915cbba0d2884afb9d56e01917112440dccb2. 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/NLRD52045977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32556ef3bfc07cb8ea3e60d5ce250fec821d55e07f9cf2b2d009b25f6804f030. 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/NLRD52045960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1426d4b861f3e79b655a467091e8fc698205395b481623a29b956242a7362f7. 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/NLRD52045956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cea2308a0a08ee15107f84e5f7eac0153433a8f4baee041652f069db0eda3b3. 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/USLZJ2403276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946bc0e1f276461fe6931327346c9952490919c9670e53b88d73411718a8c9d3. 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/USLZJ2403277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4faf1bb3a20d21d993c7efbdc1238530afc01f143dfa5e2ca25fb4b02843fd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZWDE2373753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb765c640df58191e535009c5a8d23bc66968b5df7c578accc21b2f99d1c5211f. 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/QZZ8B2396492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f845133a142eb5e4229706cbbb47ebb0d6e17a4d699ea0a5e944d943d9bdc2. 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/UK6822310208.