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 0xe949df559e5c24b76bc3fd2423e3e85844ac3f854111346a92dcf2a57880c9ba. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9f82da2-d18d-4b72-a396-127f3b159a7b.json and https://artists.proofprofile.net/proofs/artist/a9f82da2-d18d-4b72-a396-127f3b159a7b.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 0xe12674b13e8e18795e6e7458a086cfb48562feb7f7c580f7d408b3c6bc907c89. 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/DEEP81000842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655a5e029e41332f221664d649402d40c53adb60878cf9b5f999d566cf5609c4. 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/DEEP81000843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfffa0c0d0f7a9e17d61a771c66098a6407495783a91a29ff62f982b63eff14. 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/DEEP81000844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0931291f127305084a8aa19921fddf160f3ab33308d33be6cff96b72d2dac2f. 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/DEEP81000845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7387481fd688b6833a39addc6b9cdb53aeeb6a28162cedc828f210e3ca0ead1d. 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/DEEP81000846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c197777b6730169917f3b33c32a7f2d32cab7bdd7438d1eaf90c7c343fab8a7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEEP81000847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392b891e898a4836eee8307e8225f5bbdf76fc5e1026a7b85480a0668b0d91c3. 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/DEEP81000848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a9ccf8cfaaea1a832b9ce6909280f35ba98b98bacdf904883191f50cc12dbd. 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/DEEP81000849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818e55fcd708166ecb313b89acd437e08c658be0c8805db0affcb8798536a441. 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/DEEP81000852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd76ae6d4ec483fc45adfee8ad1121d857550c5fbf7472774f21963d2b0e7aec. 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/DEEP81000855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9da1bc24c67ec8f8b39e0ec10db8fe2157395bf4b99a928cad665d02bf2090. 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/DEB630979205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabf3d4f9d4a106e1e3d800d656c21616782971cc9110ff167032fad533a0915. 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/DEB630979211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2928b48748f6dd210505b309db02b891a1ff3c94732b210042041ec4b02254cc. 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/DEB630979213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb1df1138d89f281e280070cbdb4a357ee0ffdc0a006a07557b56265eac05f2. 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/DEB630979215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4244bc9d13e5e01df7cea8ba44f7365e680c888305c22692efb455b3a00ac54. 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/DEB630979217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbfa4d08d886dbd316b4c9c3ecf4ffc44d3ecb33110c94b584e53054990b7c0. 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/DEB630979223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792eef04bc3ae8530233d78c2c79f464b9d1dba5ca163ecf5c9a3e7e7d834ad6. 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/DEB630979229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8ff0a452da29239e23cbe4d865fadf44fb6cbed167d163c9c1cca48bbf7aa4. 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/DEB630979233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6632377f279b3b67ec0dc775c73f2f4800a43da0c7a26aea8071b7954aebf574. 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/DEEP80701367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392ccb7de29d20487d2acf1df02ff59136f21819905dc96c5921fbee042983be. 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/DEEP80701368.