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 0x680bfd9565a5f90a7b37c717ce084db942961c427c59d90a5a1621eb7904ffd1. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b93a9c70-96cd-471d-a0b8-1b7aa516f13f.json and https://artists.proofprofile.net/proofs/artist/b93a9c70-96cd-471d-a0b8-1b7aa516f13f.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 0xcdbf8b7a548244a3a7d0a2ea1f83446f1d830c98de2f4dbb083da6f509dbe968. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAHM2306365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6bcd6e9a9137f458c48de1ba54ac169481c2c437de2227c36bc95f2dc94905. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAHM2306377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26b47afcd7a37694341d5295da5f21efcfc2a5bf095e097aefef56a73e5eca3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAHM2306386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c75c8e9342e515d79b119a29b708d6427ec995eebdcd97ffd718252eb0d31f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/TCAHM2350877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f7319b98fd21908cda199f3ca025dc818e89a5343f9f6a86b5dfa318d4cb5d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:43:53Z), 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/TCAHM2350880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f782c62bba7c49fcb9be75939b7ffd570f745e624df86cc8023201235a819b0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAHM2350883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e131ee1a7b5d299bdb307386eda85f11dd5971ad4820d710c4b35df3523a506. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAHM2350885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d39a487a63d0553becb64527229e8eeee817fa7d6dcf0ccdd92c65de3846483. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:36Z), 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/TCAHM2350888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642613865750c3440668b2d6fe17f39b3c3bc40028a36a4ccd951b8a5dcdc066. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:51:36Z), 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/TCAHM2350890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e6626396fa0ce9ad9c155033854df1333e0b24c1b9eaae087b546cddd8912e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAHM2350891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66fc8d399bc013eb07b8a027721c6865da9f5a18a53ecdef3b6f10db912daf7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCAHM2350896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a2f5f271bf87907bcc364fc58dac9c2c678fa70a53073b2c18f34cfbfe3888. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAHM2350898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14980b49c3b58fa163dff6c2b6df6d631a429ef28ebb60b86f4f845c48346831. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAHM2350900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2415bec97029acdde3b8e2df1dc9ace9954e4050099e7523c41b7caae45438b. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TCAHN2320852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bc8a0a659434595fca851a2512ac6a1de22fa0d2ca9ceeae138342b436c6a3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAHN2320863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e232f91722ff17a57870875b980bfbf72a8cb9d44abee370e727494889a2c2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAHN2320865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19398fdcf78e5f9e60a3d090800879683e2c9b577eec56d4cb6f7e89a55bca5d. 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/TCAHN2320867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3408da6cca58279ecedc10201cfd7d8b6de94567e0e8c68c3a4268d809fae65. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAHN2320882.