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 0x14c05d0b6f7852fab73a31da02843b8b49d3ce3566a28abc90b29a23401e910d. 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/9cb2191a-269b-4865-9108-df39bae1900a.json and https://artists.proofprofile.net/proofs/artist/9cb2191a-269b-4865-9108-df39bae1900a.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 0x933414e8d5fd96f79baa493c9fd74e1ae62d548ecc09f1aa4361f4a63456bae9. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCAEH1928709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd083601306c052f9ec2042f4f61bec669a194106c97a2499412ecf83a0cd6a. 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/TCAEH1928737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d487f02af649af3be7347b53564a946b2fdac84d5795a4ed3878acbb392592. 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/TCAEH1928815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ea128d6fa2c631e95c41be2ae52624ad8a06143456776042aa327f4784cc4d. 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/TCAEH1928831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d263d27a3419b41d1cf95117a64d43b0b2b0d320eacf8e609b90d6577ac6df8. 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/QZHNB1924655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa18bc3c76ca2f087cf8f8fa0c5c9cb3fc0e0c676f16b43afc47331a424abf39. 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/QMGR32046222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562cb62e327f65d73a35b73a6edf8dce7b7ca22f185dc69f071ee1e1721c4669. 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/QMGR32045279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec0cab38fc7ec9af3cccb512c1153a113cf9470ebaa271f6dde66b3af7d203f. 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/QMGR32045288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd629ad3fd7648a35b9a23cf63c93d0f4d5eba2982eabe6c5369ac1c8d99c2cbe. 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/QMGR32045296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee122017580a65bb15a7e19f6be9a495c6f2d2e601d9d1eb045576bbc265357. 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/QMGR32066402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f505eb081551b79a964e7dcda999e2afb9042f006c65aec9d2c031d7fb4ee7. 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/QMGR32045297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa18bc3c76ca2f087cf8f8fa0c5c9cb3fc0e0c676f16b43afc47331a424abf39. 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/QMGR32046222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00be4fedacc96339bdc4e143a38fc259a0c863b89376b3b3f482256e1cb7e0f3. 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/QMGR32046208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd5fb2e74f2ec2fc7d59aa34fc5553373872a614eb57d4000b30ee49d36d653. 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/QMGR32045372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63473b53daa32ccd39c24054a2c17700915508a009cc9c6462fac0ca5e82d062. 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/QZS7J2142784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c113e97015bbda581dc293a33702b30132cc0e6807d241700ebf55442904bab. 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/QZSYP2178368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d92c75fc72fe42735056151510ccbadf971604e7dd95877ff244a998d3d739. 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/QM8HV2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545ada8f84720029a66a0213a7031467390f1826c9cae57148f1a2045121e850. 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/QMGR32114482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf543881b5a74d549c95357eef5e0c1349f6083cf0c253f4709ec7123bfc677. 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/QMGR32178087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c328f20f551d869741fb80e3787b995d4a3c80a1d9f5a3edc2bc7da3273317. 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/QZQAY2252405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763b8365d16071e16dae2a0279aa56ebe4b92e976666ab09fa011889c7e6ede0. 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/QZQAY2275378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0217f896131cd9ed38ef78d2f5beb8d54728dd3df8a2ea7a2d7e475f272c5bfc. 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/QZQAY2209956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b75aa93981e903512b08f85fdcbabc16b90cb97c62619e20f19fc70994cbf6. 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/QMGR32002089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e1795c20b455f90e342117656075509b0321b09ce973387539400547cb47b3. 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/QZQAY2296577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c113e97015bbda581dc293a33702b30132cc0e6807d241700ebf55442904bab. 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/QZSYP2178368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cd9a0bd68a85a7ec767b96f962fda4e73a8d46a963db91a4bc8e32ae7bd201. 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/QMGR32296564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63473b53daa32ccd39c24054a2c17700915508a009cc9c6462fac0ca5e82d062. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZS7J2142784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a160ec7015146c755d8c508e91e143d5daeaae12bb49a00f4e51f897b96207. 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/QZSYP2350534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477d5183f58c2b1a428542c32445d872a3bd3370a59ca87d40140be971d364ec. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZQAY2412084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5ead4a4488b96374668e6e346c5b8f73a0565a4a49863616e7674582d2b9b1. 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/QZTLA2441736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd908ac4e85325b5a94a519373c2864b79350306300813c597957855c3672d988. 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/QZQAY2464751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f95df7a6aeb0d39319ac709d7f796d732996286472622d530b645cc539d05c2. 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/QMDA72476165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b538da106cb0cea6c810553684e59645b07cb4639aa0dc9856524097bcfb0d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCADR1881752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0b4b7b56dc23e9a08e18a26298d5901bac1df0a4dae6334b44d8249e8ad035. 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/USHM81981195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c50bfe3bf30e93c2fba13d12f530e34604a0d166c7e55cf6e94ec152943ef1a. 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/DOA631910001.