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 0x25b4516c98cfdc335af780804e22cc030771c5cab6c41e1dbbd82cc3bea044cf. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f712b33-451b-4a39-8392-6372262fa46d.json and https://artists.proofprofile.net/proofs/artist/6f712b33-451b-4a39-8392-6372262fa46d.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 0xe0d74eb8cb5b6145aea34d0ec607f304bd7790bd11a0a27326c905309220d561. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZMEP2413440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f7a51ae55c4ea10308da8deab23aed89746f52f5ee4183ccf7c956df48dea0. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZMEP2413441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222a38f151d01f24b0353fc7309323356e18d895b3439d83e9c505d003424728. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:34:27Z), 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/QZMEP2413443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31e30740fd346badfaa53a7a59c58ba63424f8d3dbebbc3d269172fc7903c77. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZMEP2413444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae08f7218574b7e2dc67ae55beb8a9201ca25b753fdc4b472184a93dc90bf9e. 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/QZMEP2413446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5d11da5db8661f6344637e93cb20291442865e0a04890d8722dbac7ed00b4d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:19:58Z), 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/QZMEP2413447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0c479c092d64dcc8bd7fb06c463a7f78f8fb6389beda4bd6e40790c082cd3b. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZMEP2413448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b420cade40d6892b83c295173227461248cdac8c0ff6d17db70fd28566b476. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZMEP2413449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11fe7d709807b9432d9a9a7a42dc65fa924208303f931767e1773a721da51f3. 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/QZMEP2413450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523fcf2c9cf4ece0982ba54473060bb5300230bb206458346a53ed61c4d0b064. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:13:05Z), 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/QZMEP2412867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d1dba5939cb95bbf4d801497c0f48b0ab9d02074b4ab3165a1a19db23d1f9e. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:18:15Z), 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/QZMEP2412869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701717664c34c9338299f6650b7f48e4c45a25fe3e446f08471722332e94ecc5. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:06:14Z), 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/QZMEP2412870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6868e2ace287cd99c5b679604526c602834d85a3c4648aedd426fb42abfaaa3c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZMEP2412872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04131d6743b7612fca607788a8adabede267b5857e364610b28360d0b18c264. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QZMEP2412873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2942643fc20def821b29524993c335b07dface624e79df7dafb042af550a3a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:28:15Z), 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/QZMEP2412875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef85a8c165fcb4359804a64838e0dce4933ad04b87b8668bc6aae1d9cc6920f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:02:15Z), 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/QZMEP2411358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf011c176fdf060bf7ce96f71cd7291498a4de81291f922def98945a70341f021. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZMEP2411359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf29fc33571fe6f64f68e9fc0a6deba5133953ae96b9d9ba3bb858e1d28b6d74. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:16:49Z), 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/QZMEP2411362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37519b00867c598fc49ba185415e328c6f39e3d94ba56d46b4e01c466075c6b. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZMEP2411365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d4fe8fee5fb5f690cb8eab0c54e9f3aa7b45c5fca715e9146483bb2caea0f5. 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/QZMEP2411366.