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 0xa8b7f9ac88ec3af5ba0def0d56361d7833b7925deac98755bf130d3013630598. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac9799b6-d2f8-4b1f-91eb-ae3c1965730b.json and https://artists.proofprofile.net/proofs/artist/ac9799b6-d2f8-4b1f-91eb-ae3c1965730b.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 0x061743ca99cb9d7bca82df888c104958836b0ed56025b0cb412a6eeabbfd6618. 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/FRX452391892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bb61398c50325b79c62f3ab2e9456c679bf8c13fdfbbf2fcd192e90a861c5e. 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/QZHNA2300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c4125c7d966ddb3cbefc01b68bab291b7447834f0719b93466257ca5feebd6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZZ7X2451419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433260fd793bd74b3284d727c533b76fd97fca79f2246cd25b678000fc189293. 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/QZZ7X2451420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0345667eeeb2e4a2c90746adfd94a37f4d3f1510ea7eacfc78a09461089c861c. 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/QZTBA2478121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0b62ef0e5f7696cb1de62d480bb9195b36c6bc36422feb8a7c17d138f0c4a0. 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/QZZ7X2451421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4742834635e1d3364a2acfc9d5e977413224f968ea54fe77e3c657d7c125b5. 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/QZZ7K2496001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cf5436c7f11ee4c05765b40ae23298e95cec0609e9a95fa0be1baba4ad9e3c. 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/QZZ7X2451423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9bf7694730f14341a6be6914c270c86bce57d24c3f154fe2fbd6c3edc4d1f2. 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/QZZ7X2451424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823a08e5df5544ec2b0cbb756d7f9ce6ec254d75949580dbaaecc7de671e4811. 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/QZZ7X2451427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614594d33db10b879416bb3e10e7607eb3196e532c94d0e8e1687310983feb3d. 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/QZNWT2425565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11309aab66cc4cedaa8a6bebb2f0183994567f61da3fb40f3b3695a6fab6357. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWT2425566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a78d57365cbfddb61fbe3ab098d5eec40f4955a1ad15941a6ecd657628cfec. 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/QZHN32418519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b8575abb6fa506a21b3b77b503c3ee954cf7d8b279ab30a5fef3513aab17e3. 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/DEZC62415162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e432fd0919eef42417c895b80cd35a3f295e3187716da598d8865c61835b01. 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/QZNWT2425570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241d0a88da8a1befc418f23239a642a9c986b6e83d9b026cbd642abdb0bc4116. 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/QZNWT2425572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab28468849020e393b5d5f57d470cb807eb61d6ffb08ca5eaa9e205430b8904b. 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/QZNWT2425573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a0021528c007e6e60a9f01df256043313cd3de5c7a59829986b9bc955281df. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZWFJ2346100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c468bb0f855baca8849ddd9a25398d9f4ade9a9c97ab1b1a4751ffa0ad6a7f. 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/QZWFJ2346102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862705df9d41c8414db727c8340ea828083b51ccd4c86ba1ba4f08fdf21e801e. 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/QZWFJ2346104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029167e60cfaec8b3657fcdba046d4e96f295ff40084e82c0a923154305608c1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEZC62375943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc063575f8ed8b4dffae331ef9a065599b192eada46c9350449506dd9c37953b5. 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/QZTAU2334651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2726c409e3940d75ece255e7c624414e7edf0a201df663b3d2c5a1c1d57919. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWFJ2346110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00cc48767a8031c7ecf2c8351000f1a779f26662efce0feef85b5dc764c42f5. 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/QZWFJ2346112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc556054cbc7ae5ca3652d4e7dc1e0ad0de8a586f5998e3d9eab3830df36aa86. 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/QZWFJ2346113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc23a4fcaba560f3c584b1f4aa2a1837d2ea6dbf72a712ab7a16fddefed35c04. 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/QZWFJ2346114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0ef2ac207998f98ae297073ec0d2086d550fe94ab169c43d21b6126e097f7f. 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/DEZC62275145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25885a3437ab3b38a81da26ecd15cd699808decabadaf6e3ed04340715ac14e9. 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/QZES72107023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46aa1927f221fda008d72a0e85ab849048126ec2f7d05f22cae31cf5b265760. 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/QZNWV2592758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daa70045b61a7f1edb6c5ba4889c6efb553e37f3203dae756f821651833b79c. 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/QZMEQ2516304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f48871f204250dfeb39a312851ca97260c1e64144d722ece7065d607c8dcb1. 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/QZZ7N2417346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4742834635e1d3364a2acfc9d5e977413224f968ea54fe77e3c657d7c125b5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZZ7K2496001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b8575abb6fa506a21b3b77b503c3ee954cf7d8b279ab30a5fef3513aab17e3. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DEZC62415162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a78d57365cbfddb61fbe3ab098d5eec40f4955a1ad15941a6ecd657628cfec. 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/QZHN32418519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029167e60cfaec8b3657fcdba046d4e96f295ff40084e82c0a923154305608c1. 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/DEZC62375943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc063575f8ed8b4dffae331ef9a065599b192eada46c9350449506dd9c37953b5. 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/QZTAU2334651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dbd9d528cde14ee46225f3dafb95288603a63baacdcce670d4c32577b05bba. 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/DEZC62364700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b23cd4f6a339f63e1f45c5357fe01172737e905bafe0b67994bdbe7fc04497e. 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/QZMEM2308283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d928800af2ceab7a71407e61eda8bf3cd5548308b3a1d17a05004e34dd7ad11. 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/QZK6J2388413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061743ca99cb9d7bca82df888c104958836b0ed56025b0cb412a6eeabbfd6618. 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/FRX452391892.