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 0x92169953a61a068cacf751a4692e0c0f764e14dd9301528192444eba7843818c. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce1fa855-d1c7-4f84-8c70-9a57378ad8c3.json and https://artists.proofprofile.net/proofs/artist/ce1fa855-d1c7-4f84-8c70-9a57378ad8c3.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 0x4685710d69d6c7858ba32cb94526853693b30d99dea53ee0e997906eafe608c5. 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/DEH742211941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f7f1194eb73f1e084d522cea2227568e0395d3dbf0dc2a81dc80a8c810ffc6. 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/DEH742211947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea2e7146f2aa71ed4d43839531fb56c66cecc69b3b14f7e2c16a59e9f03d0b6. 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/DEH742211956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7779805a4a084c91130af6c64979d7ad1ffe1f93db8d68f80182ea861e925420. 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/DEH742211959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ab637b18de218496eb87420eb95993dcc45503f090d66112e475083dd58fe1. 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/DEH742211961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15441ef6df9440f3124570368229a17fadd6d6d63ca914405e3eb1edfa134058. 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/QZHNA2225400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5611159c686511c091cd9881431f1f5d9b7b9d050936c4bec432d98e8eee55e. 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/QZFZ72554757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b679e367738b1aed96bff2eab4c440c53717befa9b3e42620e3a95f90ec431. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T19:06:28Z), 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/QZFZ72554758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a38daf74ea7a51590c17d22f6682abf0ad4b163f4efe31fc508dc64f10dd2d. 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/QZFZ72554760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928ed24e357fe33e4b5be2c79044bde2324ee8faa0d33684107cf1befa1e11ae. 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/QZFZ72554761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16410c325bb36a509d7e6e2707c6d9eb37cd890c7ade192f90b4cd62433e6c6. 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/QZPLR2277982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bf9042d631abb226cd0568a59df978d43594aa0d7a450fd90ee0d6c0946cfc. 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/QZPLR2277985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde15986d0a505bb3865a2fff4afbb06939f6ada8f4ea848cc7ae6d335be34745. 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/QZWFS2565425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbde9bb4b7faa806f2d095454aa1c792b4d1472a3a7fd7238ae26ccdcc02b50. 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/QZWFS2565426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa956e9d515247469aea5a952ec5d2792c52ab60994b01f3ae9d775571b64ba09. 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/QZWFS2565427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d371979dabaf7f781d66a563c48e5093cbd7725a6f4c4008000e02bff94a25f. 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/QZTB52327114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e46876310d16bd4e7a47148096df11280723c011e2348774336257b5fee5047. 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/QZTB52327115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1271020540c56caf9480e41373fc27438191cba4db0afdb23f8b312a05910765. 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/CH7812237204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659ecf429eff5990e0bf6c0f1f5eeb6c649ae74ef3bb5dbc7571961e5b0041c7. 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/CH7812237205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d6665286e4c49ce254712048314c35f1ff73c1f477d556327de3047d9852bf. 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/CH7812237206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ac4a7480ab034101aa73455bcb9bc1cc0df40db717f4557dcdf4b2a624f36f. 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/DEH742219410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b375448d3801db912c02f4d29b4e31e8e8c12ee3479c6407cf189fd81a5e3e8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLCK42212939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3e3ae6045125c876ed0d5fbfcfc4ac9848f00d8eca4049d6d31a9f43fde026. 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/QZES52272545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7842ae309e1b986c7c74b8cf227cdbb2cf53d8f955de70c2a5e68f878e22c93b. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZNWU2147984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b375448d3801db912c02f4d29b4e31e8e8c12ee3479c6407cf189fd81a5e3e8. 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/NLCK42212939.