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 0xe04226fbe157c9969c078656c5a80f0fd5d00d9d854b141963b321acb242c73f. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90c53b4a-4ea6-4549-ba4b-cae46dc07d06.json and https://artists.proofprofile.net/proofs/artist/90c53b4a-4ea6-4549-ba4b-cae46dc07d06.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 0xf881fdff747ccae87a88c850c4fc569ca17284e35685210568cfcb7ea704aeba. 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/NLC7Q2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1bc2a3d0fe044b4bbc23ca5644c4f3a6a28bd4b30f02d0fa9df8639daaf1ab. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:39:22Z), 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/NLC7Q2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e36e507078cef7e24cce5f7b3cffad9f1cd589cb7fa62b0dffea5e6ff322bc. 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/NLC7Q2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bdb3088687a3d3895ff5015fbeaacc78006257cfb7a1f6beabab54b36e14a3. 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/NLC7Q2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240b390665fbb5128fb5005f17ea479664da9b77c1c44af9171b582559740f4a. 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/NLC7Q2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82719879f57316d970cb0be3d839c026cfce882419d1e54f9a51c239658ca9d7. 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/NLC7Q2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9a73ab56228a90039cb0a18ce3aa5065b7c8fd38560df87112f08569729b22. 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/NLC7Q2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4119524db2bb86297f70e8b0d956e6baecd45e3ca0c59d2eab300a7379b77059. 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/NLC7Q2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493bdb61c156e48b91d0d2a0b154f6d0124e11b69ef89e60807e693acd923c3d. 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/FRX201990761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891758cee2fc6035be09f2a587007d2f34c124396002ede15654f022dce511c9. 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/NLAL61902001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20883021fa7bdb1c7077b1682bad0d8b1a6c22844d5813adf90a643b8bc9b910. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLAI61907001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cda846ac37bb21276ed243a00b1809a8dc3599b1d558ef2c6927f3536cc756. 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/FRX201990767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e99e273afc43f11b5fa90884b86a39f97ab4194463894d013eeae91c5f9ae1f. 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/NLAL61610001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6582e032db4b130ae1f848dd97257ee3b20388f0348f0a70e0a0a32bb6682c01. 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/NLAL61610006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cade1464eed26ffd7aeca08ecfed3e86576d38385a6ca57d5edd5e8a9d235ed. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:00:31Z), 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/NLAL61610008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4119524db2bb86297f70e8b0d956e6baecd45e3ca0c59d2eab300a7379b77059. 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/NLC7Q2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82719879f57316d970cb0be3d839c026cfce882419d1e54f9a51c239658ca9d7. 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/NLC7Q2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1bc2a3d0fe044b4bbc23ca5644c4f3a6a28bd4b30f02d0fa9df8639daaf1ab. 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/NLC7Q2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69963015c19fd0f13b0df80c7b0bffa5fc20d68dfe23e6f041bfe3e12fde0fc. 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/NLC7Q1400003.