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 0xba2ab90c8d92362310891b94ec00256c32b054c0a367ff484bfd1fa2e0263e4c. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea7d8aaf-bfc3-4806-a1d7-c500ebcccd57.json and https://artists.proofprofile.net/proofs/artist/ea7d8aaf-bfc3-4806-a1d7-c500ebcccd57.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 0x39cf1c2ba7bc6a60059e6c9bd467ed7df3906fcfcd62e359e373e4d3bc92f262. 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/ITL462300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012b67e7a7ca04904a1197b5871bbdeea893b37a6cd19e337b82aa8173ea38b3. 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/ITL462300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ea65047d1d9446e0e143a2d895595adc04f5a455c3239c39fca470b9f30c9c. 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/ITL462300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddbdb5238a426409612c6de0abaf689624771681c3826efa301060199440e1d. 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/ITL462300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdf2c117aef309f1b3dc2c5354d695fa7091051128381e7e220ee88b96b08fd. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ITL462300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7adda00c1ae464ce25b5a15a8b1afde43f9d4f79c78d10646e36456bfbaca1f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITL462300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd5c6cede93f516d8890cf9e429be88da0463349a45cd021b9a45b811ced18f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ITL462300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c886014fe2d77142f42834ae5196205bd0c82dfca5d50bb6cf36a733cd15238. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ITL462300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45b303a96e4770c09730efa4d65ec516619c78caa96bd0023a6cf7191ada592. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ITL462300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae1f33c44d46402ab153ced9ba30411bb11bd81dc627b5a3433c41abbf45dc6. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ITL462300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9eb7882290dd8a4000c498519cc63f047c51bd7ce3d50158e97a70f4d2d14a. 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/IT8SF1600546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82389d263fda726353b5871c57714ad216145466df1de9c62bfd18ccb428e679. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/IT8SF1600542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804214c5b692619ac2e6853b446ac786cad9a7492002bada3a20dc53e040ca5a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/IT8SF1600543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb940b1adebb8a60346994b50e71194702ee392d93d9ef2069db6a575be5d1a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/IT8SF1600544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2284ffba423b01558491405ef0cb8ecd5bd9a77babfcc438835adad101bc4cfc. 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/IEJNG1400172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f862fa949ce8dcb6ee85a340ef27caf354c3e1ac80bde647d06695dba686a6. 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/IEJNG1400174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800c285642f7e6cbb2a13ee9b2a61649e6b054bb82d39f0fc987eed9251d643f. 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/IEJNG1400175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc966541d6147585a9dd86647d3b70a0b8870afafa6505f4e57ff318f643015. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/IEJNG1400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab36fc0263c452e0238fa19c8a1992fa58072dd6b70ecde2e056657689e6dc97. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/IEJNG1400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3364488bbcfd0f6d351297c7f68679a614e7ab3337f32493496d02982fca1b41. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/IEJNG1400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f9efd037d7f816d69766561cab67a436752342cd6a8791d552f13e80c4d374. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/IEJNG1400178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5574c4c4eea6e9a7ec74d3e8388d6e1d646d871324ce208a79f3ad5a7ea25643. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/IEJNG1400179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8134c0bf19ada7f877515fe09aba4a914c8ac8d3d561622d4c78189e2df936. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/IEJNG1400180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9dc41158a6db22474d67d9ca912355ddc33b99b95a6ee54cec786da1b30b14. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/IEJNG1400181.