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 0x886c94949797cdfe394a6903aa49b06d3fda6a5189f3ed0c159435c9a42e6cbf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b2f0a6d-95a6-4e62-9153-10bbda16fd5a.json and https://artists.proofprofile.net/proofs/artist/8b2f0a6d-95a6-4e62-9153-10bbda16fd5a.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 0x502aa14ee5004f13bbd4a720d35b0a800aed106abccfcb774bc04ced35123788. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USCGJ1801713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c8a8908084141d056bbc153696dbf2398cfbff15d9fe9d193a1b91404a18a4. 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/USCGJ1801714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bf2636d9610d9cbfaeb6b6fab776a715ed2da2819ce37e4cc8dc3a390f4cd0. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USCGJ1801715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5376b652ca09d38ee94264551e497a66025c98ca4ed40e031a21e62cc837cc5b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USCGJ1801716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56274b39712e819415c161073334de3df8dea18947fd2093561b43d4d6546c8d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USCGJ1801717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4daae507d9f004959019f1e3f0ee6696bafa4a02d87ad24907fbc4fbadfbc16b. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/USCGJ1801722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29efc828ad3d341fc01f95379259736424383cdcd314a2a20556e946a3e80c3. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USCGJ1801723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c69774168e38faeb476bb4132d34d1facc3c49f4bba036be75fe773add731b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USCGJ1801724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060a4902c1d669fea11e39bfd16d2cccbb8e1cdeb6fd7d1764dd0567abbb363c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USHM91919834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035d6a861b74b9beb9458ba43c421ac28def981a6f8891f268af1d4db602f0bb. 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/USHM91919836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eafabe9635f67d1443df4bbace9bf12ae860ffb3b60cfa473a94f6ab779df69. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:37:01Z), 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/USHM91919837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa787dd0c478fb506ef14e44f6264edfd2d08982deb04803f45050df03b8e230c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:27:49Z), 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/USHM91919838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcccb09f83674abf7021cffa5541ee9164d34587c2660fb448a06ea9c47dd39a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:01:49Z), 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/USHM91919839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a55940f6a234babe1c3aaa1dbd3752ea2e5675df86116fc3e0ec6e8c13c65a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USHM91919841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214ee7f33b6bfab720e7790edf6602ad19092b68c05133b329745146370c69b0. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USHM91919842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0981db4fe5dbf4d1cfe50c8e375bab4cd71da20e993241a55f6b8132fd3b3bea. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USHM91919843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec08b755f374fff21868206d9d13531b4986d113a01ecf8b2ccec20f2b62690. 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/USHM91919847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bfc6d0ca35fc8a52cd45f6b2ed9c442bea34bf357983c9a9435609e37dc7ce. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/FRX282171129.