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 0x6cfde1765fb33f083dce4f85d442842c629fc71cc3f7bbcb4d1b6e12f05eb66e. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2518ecdc-fe31-40d3-95c1-ffbc2b81028b.json and https://artists.proofprofile.net/proofs/artist/2518ecdc-fe31-40d3-95c1-ffbc2b81028b.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 0xbec3abcb56a5a177fb1bc3dde658a9776c3d0b4808c5a684bc43df7b8a2bf8be. 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/QZMHM2236540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445879c7dd9930345a892a7ad99eb6ba0415ba402b3b6eafa1a474eed1c8c426. 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/QZHNB2407413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f61bc5d839c56232e04e5d3078a8deb15d610140b5a4cd36d9e0b4badb09325. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZHNB2407415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1448ad2297a13d8555f1228fbd7139835808d9cf99dff56bdd6332fd6b84cc. 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/QZHNB2407417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d242560ba5dd93a313d9e54ff7b12e4428830f0c37e918c820b0f44844d20c1. 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/QZHNB2407419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09318f1544ce78c3263b3a5deaf302918432c9ff979c44d165fbc243eb8b4b3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHNB2407420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a047c9bd8e3c34bc915c2886f4d8609bd4d88eb99c1f0d8471578084b1e876. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZS652181602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720b9bb0cceef6193b578b178ebdbe1b8b51b46613ae2a667e2145997b8abdf9. 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/QZHNB2407424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59117f6c7e4fba1fbb9b5068e1fbdb001b99bac361b23ddd21887af574fde0c9. 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/QZHNB2407426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e03e4c9977fa52c0bd137da4c2ac7696af3fb31f6296215f3bcede8378e798. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZHNB2407412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251a4a42442c66553359a4be975d07f97cc0f2f206d19f0368c3f8c9b5abede5. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZHNB2407421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d82ca4e9548c329cc88b48a241e87a0a5924658309b7b9585d83443e06ca218. 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/QZMHP2333892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98a4073ebc7254dd24b90d9f727b08fb763e70c1f74f683fc9429308715d91d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZS632359493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8dbd20bae42c112278da13dfb2ce28cca5ea34ca5166bc07d3d12bc1d6ce106. 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/QM42K2384387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1649f63ad7fb047dc30ea116ae18630bf5eb95e1e98ee9844c9a380d69c4384. 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/QZMHK2309368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d34e527c7db1a4bf265540ac61bd9c2817ff6a5164a3cc7d38da3c1660f9aaf. 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/QZS652319993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649881271d2ca496b6efbaffd04c0e05a95e33e81123cdb551899605d15c754f. 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/QZS642392586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9d7f9056151dc4a5afb4150c8011e225638ee7f7bb43d74298fe5dc412b13f. 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/QZS642104509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2638ddc543b9dd4967ca01533c981762c990bc76ff9e135c7321467b7a5b7d6. 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/QZS632195259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d00501f315abadc4f4d614050a570e69f55d45584cbd58d4f2fd3cef004c8f. 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/QZS662129603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec3abcb56a5a177fb1bc3dde658a9776c3d0b4808c5a684bc43df7b8a2bf8be. 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/QZMHM2236540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b4ebf2657bf2317a7862cc15d64196c068a96a9d8bb845d65533c9517119f0. 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/QZMHM2379677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0d6d7ff380a6776a22cbd5cdf4a65da14ae79cd26e1a9b635a361b9b3b005f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZMHL2265735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0843d6d3516400fbcb6f2afc75ac3e37af543e5999125a0f73c5c6fdce188e3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZS642259154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d7b0563e7937b596870c3e529b38f6065bc18eee7a19d712f507323e33ded6. 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/QM42K2260979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edf9b446fb31df4b6ed6d61fb295bf2f42e7c41d271bbdc4be0a634378c4312. 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/QZKDK2220920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6acda0392bd54af2e5e77465d9d457019def2e3e4eaf991a4f3300743e0ea49. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZKDK2207646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753d229bca7a4b3cde07b712288ddcc1c124caca59be60d051c7d32617acfbb7. 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/QZKDK2278535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e63e36ddd755d64784be32d6a6987561d07f7eb90fbc702b2beb3e3fd1ebc36. 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/QZS672181941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ab5ed11df84181d3c5e92d72ffd78874e14de5364e51826be61ee55c07fad6. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QM42K2265935.