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 0xa96d7bd85ed2087724c989639f5c6d3f1641b7ecc4ae5d8a264ad43c3b53592e. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e30f067c-4160-4171-9f3f-f7ea5aef1ece.json and https://artists.proofprofile.net/proofs/artist/e30f067c-4160-4171-9f3f-f7ea5aef1ece.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 0x3db961acb1856a5da051600af68f705e17ec7bd0e1ced21aa616c40dfdaeb957. 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/SE6QE2072347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442afda8616060ce8c1a77811265430b69c4264bfdb88975ccc56943c9309a97. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE6QE2072348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13efcd892bd13fd105a6bf13771a7da342d858f5f53fd16c1ae9b5001b265bc2. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:43:40Z), 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/SE6QE2072349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1dd955bfbc7a7b0befe16be04d7b86d3fdb5f83f248a8f660fcd04471b275d. 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/SE6QE2072379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4e5c8de6d936bf1cc0e7883cb91188703d15d597e592e222c50d7b2f2f1a83. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SE6QE2072399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386ff58e092a2e82ce0f8445cdffa7c29673f4675565f7fb24422284e6fdb8d7. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/SE6QE2072396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24f1c5ea7499cfa74a8847a8387eaa208129a7271b79ef1ec255ef2c44d8cba. 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/SE6QE2072431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9320e56947e86f6873ec4fbfcd798fad493a3428f24f300a7f184dd1fda973b6. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SE6QE2072432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6576df5595fec7c60eb53274062904b83a5a35d3245dc95a09b188104f272f22. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SE6QE2072433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9767d70f9d14365a9c45f0887d13e54654c90454e2188c02e117ed7816fed5d7. 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/SE6QE2072434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f963a81e410cec4f91f4ad63d5fe93dc40cdfb66751b86d336b1f736f7c77de. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/MX2832130997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34979abf9a3113d2e8d21634cd75d45fcd07a4edefcd2027fa7de38f2ab0c7ac. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/MX2832130998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f98f603dcbe846755a05fb4d22215a5dd1f49038018ee29b620a0c4aacdef3. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:12:20Z), 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/MX2832130999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17615f12247605a88626445c9051636f43a005852e2f5be1ce05ea90237816e. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:49:37Z), 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/MX2832131000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b85e15605298c79ffa7b93b940aa751216cf9df055511586e5c6a979a78627. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/MX2832131001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad59602537e9a66204c46acd096a5fc8ba03d3e362e0f977d97a52686928d1a8. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/MX2832131002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da0aae70307d58cbb8b8185b4abfa85adb789a1b53229fd8d2b02748887846b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:14:26Z), 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/MX2832131003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826f938789b809d3fb04d476c1312112c55cc015dfd64970a343550e55d0e664. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:24:51Z), 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/MX2832131004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ee01c993d87579982592fed6334b90ef7b2fdebf4561e4fd20988f92ee45f5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/MX2832131005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48247ff6f8e548ddf0dfab12d55320308350dff413074518ec8334c22f774b7e. 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/MX2832131006.