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 0x665775bf2d5a7b58d9bcc54010d95d589c4a01a2d2a32085e9300bb5d641824e. 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/3ba6ac56-6342-48fb-80fc-269007202cf7.json and https://artists.proofprofile.net/proofs/artist/3ba6ac56-6342-48fb-80fc-269007202cf7.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 0x299fff09fd3da83869dc48cbe94b765e3ddcebadb82d326d484f412941ab5fd8. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FRX282260472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a268dca6b6221c076885f590ad072889f52812cdb8c5fed10ceab5a4d29936. 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/FRX282260473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164919dcd29e6f95e12e51b771ab6c97b30d7cd58705297d3743235931d94a0e. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/FRX282260474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0539c67657b7c9e7ed3d8282e60a716eded24bbe9fdece818d84762ed9831ae. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX282260476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff33a1af064d45549d0847337db384a80fc180a7b426bf270589441cef7e4e6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX282260478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9ecfa2e0f7976f788112d148a3900b27063d0e7d4ad6bf19cce162bb4ad0fa. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/FRX282259713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c63770cf1f3b2aa14aa09eb4f47b0777391b5a86d73829aea09728d93804d4. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/FRX282259714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c8b662088c69f90c20668a1d6b70b38d570efef70d9d91abc5925d7c5e00a8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX282259715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37df1749c288f62c77726efd54c46be05e8960e4ef1206c933da956f9c6d4a72. 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/FRX282259716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfe9e0964c66db128a2f3a2e8db294bffb7856e0215c426fb804830f83f60b3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FRX282259717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb29e48ccdd3d3d864296f5c5e32fd5200117d9723daa05250c31fef03330dd. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX282259718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4613adf1b23607344fceb64f08982a82611115b293e92dc995a63329e10eca51. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/FRX282260480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3add058607c45506c6089724e5398a6a9fc10a1c921151f34ffda37f4fc53397. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:01:28Z), 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/FRX282260488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23843df157f3f48fd34da3a13029ec997b0ada998b4d1a81faf244b699bbf133. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX282241999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82eb5498cc0b833c4935e6ab42e69b99ee69424a81c3cf9f72642996174e35bc. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX282242000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501a25e8a37feb8d323bd4b6aaf38d908834d2c5722f88342f351dd02d2fbcbd. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:13:34Z), 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/FRX282242008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6669fabe736da5f05a642454ac459b0270ba757f3cfbf03b115adc3810a5c97b. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/FRX282252860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cef94f21299f01a96c20a3b35f845d187c96ea938169b435eed31bbbc154e9. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/FRX282252864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e64089d6dfdb33e0413c00d16a9f22f65a04217397b52d9432e083efaee43c. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/FRX282223961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fa9087e2fc292f71a56aa289fb26aa0c07382025bfc58ac441adafa2b699f3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX452276545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280cd5d259bb0f9ded510a22f4de35b0a40520081b3f32a58e918d5519147f69. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/FRX452276550.