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 0x73e3c0519a74ef23629dbeb7ccdf5a0a223063dd980eba3a7c987247c2b48556. 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/d473110c-5fd5-4c44-8c2c-b4943283851d.json and https://artists.proofprofile.net/proofs/artist/d473110c-5fd5-4c44-8c2c-b4943283851d.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 0x8f200016d39647480e689d1a598efa06503686f4eebf9d94256c11a168031c87. 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/USCGJ1778457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139a5066af7ac6b9a0d0559382fe205496fd9eaae71a1e0ace4e4da9d0e7ca6f. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:00:08Z), 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/USCGJ1876294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16daf51052779e22103026c8f655b7a56437bad29e9721ac6b25442028749ce. 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/USCGJ1876297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9825e14d640d2bf19d536bb56d43a820ccc6341197451b2a501697a7c347afd8. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USCGJ1876300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de7632be1ae6e702759c9bb8ec493f9c6efe1d16b2ceb67ca4be5621b271214. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USCGJ1876301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe01f359eaa3439930a4548fb615ad505d3cea459f1dff42ad2e0745213d03e5. 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/USCGJ1876302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf197b8a2368ed51baa376e8cf10cf84cc9ea1af056cccac76be5cecbef9ef6fe. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:44:40Z), 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/USCGJ1876303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2fd8bee451e270fb6709b7ea87c7c0b286be2497db7140f0c632db779e022f. 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/USHM81966514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d48e7e0e09ea4eb60acdd360e36b1503e23b6f5f0e09a88e1053c8ff7a89d27. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM81966516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42393601546712441314f80675360b04742dd5b32da7e9a0d9af666b83a5154d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USL4Q1926418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e586e3b8acc9e93da58939811eec30592585d9f30c56207212c3bdf062995fa. 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/USL4R2032881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97328c46d1a9f22909b370a17d8fe189ff37f7c5a2884d4e7e33c1d01e2d79cb. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:42:11Z), 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/USDY42160119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e35b8cf92dccd74da4b65d1e5825011d1c2fafcdd6e03cc242cd350255b8fe. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:45:38Z), 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/USHM92115263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606d753144fb06736dbcc09efc727d1eb522f0372cc153a858ec5ca17da456c7. 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/USCGJ2286707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bec3584d514dbcff4d5ded29d278b2c463c44911bb0e0de32b222d842a658d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:31:42Z), 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/USCGH2395744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca6aba500b81d7328053297370825fbd9bc491a65659372a914bb423e6a7a5f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGJ2394142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2760340cc45bb095d84631027e2b67707f7e542eed526b9a035cb65762ac8208. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USCGJ2394141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bec3584d514dbcff4d5ded29d278b2c463c44911bb0e0de32b222d842a658d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGH2395744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d06321c5d1058040e1902a64aeabdafc18f03272f7c0230f67a38285b62b47. 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/USDY42311417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0ea481d2366bfa7aa7a9f2caa301302de8b6a09dcc05a1d862c71b8a34585d. 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/USDY42311418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7aab9a179f878829b2dac4c5a549a67f4b883e20202898a229c7f8c883e780. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/USHM82415417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad5415409e60ccbb3b89ca1d4324495700febc759dd4bbf2344c89d43830aea. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USL4Q2476044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad5415409e60ccbb3b89ca1d4324495700febc759dd4bbf2344c89d43830aea. 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/USL4Q2476044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7aab9a179f878829b2dac4c5a549a67f4b883e20202898a229c7f8c883e780. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USHM82415417.