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 0x05001fc8a61cd7fdfe95863a789c8c64acc8fe037b66284104cd9dd1537868a0. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45e950f6-bfc5-47c9-97fe-10213bea7875.json and https://artists.proofprofile.net/proofs/artist/45e950f6-bfc5-47c9-97fe-10213bea7875.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 0x9fb591ec74e28ef537e560a95f76ca652c3f5058ac07be3a2cd2c509bb716a1d. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FR96X2162996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08224cf7ec2780a7e3c9f14157c6aba8d465e4b8b37b0894e05433951ffb8fbf. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/FR96X2162997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64caca779f1d53d2f57b74aa969effc100e54140fdbda2c3986a91a630bf025b. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/FR96X2162998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e05a0d75c9ae96327ce31085903cff673d0b0d4e948bd8d203f509688eb24e9. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:11:34Z), 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/FR96X2162999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f905eb5e9384b5097fdfd7945cb039ca897c41a935bcc7a3a9954544ec729ed. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR96X2163001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583274d1b90a1681c63813e8efb666bd78deb119a640d5fb71f325bd37a072ee. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR96X2163002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72aafbc125d523f9340a48ca62ecdcb09100859e894d1fa5347286d6dfb0a1c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR96X2163005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b030073575880b325838835727753c243cfb3109a03e4b88e819adaa41ab7d2. 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/FR96X2163006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143e474e38711afa9413adefa6598b22823961dede4f379de0dbba30836d614c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR96X2163008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67341e7e9e1200575f02db0a1ff1da84acbdcef076ca1356b5847633767655c. 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/FR96X2163009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5facde79fe34d63317a14f96df5b1cdb9b7951190140d2cfc197916c42249123. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR96X2163010.