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 0xbea2619039ea0a037e1ee85301b7eda110cbdbdb34901bb8abb1bbe591530064. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e894660d-ab41-4013-b3fe-03eeff1ac35b.json and https://artists.proofprofile.net/proofs/artist/e894660d-ab41-4013-b3fe-03eeff1ac35b.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 0xabc1949cacaf002186194ecf9d81fca3f420daf7caa855f0bbeaa5216df2645e. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:22:37Z), 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/QZDA62308432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117b87587402df707ae0ab93f5324c3a00690dc8e9db532547b2d139e2496ab0. 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/QZTBA2330153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b24377a7a9df1a7ccb6c7724a5690db938db98ecbf80ecad5e11e5ae9bf19b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWFL2366921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ac3f90ae394e448e2e0aab7e739e41a447dd5fd0b919cbd2733394c4c54a2a. 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/QZFYZ2488368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f255c7cdafa2a3bdba2982cd6f33ac950d36f17850346764cb76e5584d863d9. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZHN72449727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86713d8d5854f80f0a241f3bea1c2e6fec36604deb3eade9a99ce768121ccd8. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZK6N2494248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86761b57c65e7866725c6be2b9c5671704da6936e31f4c4c2234175d203cc4eb. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZNWR2483121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde55c1595bb5f7154fe12e2ae41dde2358b147646e7477981f4ba2a65971f4b0. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:52:34Z), 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/QZNWU2458530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17fcc96507d45915976f7b0ae1798cca658a9164c8bfa1aa99a6064e134da56. 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/QZTAW2453953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf05f51f9167594cd4be397de981e9cba65b71f73703370cce4a24f1042341f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTB32468816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2c9c48ef3bc8c6f75c2bd14d7cb37ae090ab672df61264a96bafdd1bd14c47. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/QZTB52439250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56a6553f60a2a7da67ce534a18cf27e4aa8279c16e9df4df8a410a87ff4cbf1. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZWFT2419531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a174c03c69e73fb9bf3717687a3607e5c0cf0844eda9c90c019e532e8b1600. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:27:30Z), 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/QZZ7K2400635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd626c8b5881ba680dcf0e77db181a58dbbe4cfd05e9eaefc52972d6580a2082. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZDA42507343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd4e8659673499db580b597e268443f9abf9ae4972819bab34e53f48c9ac22b. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZDA62540458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7370230c056f111ea67cf5417f6b3fd1dea7e5da2bc1a53a16dbe357b521b1c. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:37:01Z), 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/QZHN42514222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401299e09de87850b0d1befa1c1388e3aee0729dd572ee0521092a9870dd7301. 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/QZHN72516503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1638163e3268a588fbf0d140cbd491a3c37869f840544db1fb046873fe7882c7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHNC2545511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0253d66c1a1a97b165e3544b3023a45548e8e5b715d3e3fcdb337b9c205823b7. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZK6H2536724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd486a25745b23a09ffaf3a37c8a82a90d425e89f857bbfc6399493051fcfda9e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMEP2509216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4349ac672ecd9f32d84185cb7a29e6d81ae8db8dc923ba05e721c66f115239. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6F2598066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b58a27c5151bb4d58393fbacc2c6109d44673573bbc911430d0cb18b7fac14a. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:27:40Z), 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/QZRP42512536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f99dc310626752049780e10481c043dac8d6eddfb2e6ed296907a23d354005. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZTAZ2513567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640a761fd55083acead238244732f1d564cbab90e4b6f1010183bbbf60aafe26. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTB62588771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d8fa738c0d510f92270badbd1ccb771aacdc4f98a4ff7bcea8cad0e7317d19. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFF2547286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d346880a054ab7d7647f3d3e8e40aa18c9bcf562039898ab5bfabce58ebc99f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:32:06Z), 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/QZZ7R2520674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684c6b478f8b8d4c53c9d6513c9e6313764f9434124c054bf02c8d1f4a94cdee. 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/QT3EY2507010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9519227c9f9020185a96bdae00adde0179aaf19beeb38c30bc0e8fad77cb926b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT3F62505457.