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 0xb49e68d49915eb980da1173df41c1f1d65b5550074587bf39054296693f3e136. 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/2336c8c5-c73a-4d97-9246-ea22bfbe13cd.json and https://artists.proofprofile.net/proofs/artist/2336c8c5-c73a-4d97-9246-ea22bfbe13cd.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 0x88bf9231e5b632d1b95270578096ebf631b4e602dcd7ed7612bf96b081b0e4e8. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:54:01Z), 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/TCAER2082444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71eb14d31550a9e1f410487b9f06d06c24964e73147da96d2d8ae9224919225. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAET2008959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052c5a25997cc450364c74db234d0af089fe71cac90744766024814c37c45a08. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCAET2012602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb543e2912a23468a744e3c870c23ea62e2f518a40210bfd76633aa6daa7a84. 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/TCAET2012639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd07cecaf4ca1bbb294bb4e27d4ebfce54a2f7c41b9705f2afa4d3dc29554560. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCAET2012938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c64a5ff7e9b92ff2fb1978a80813acc49a86c5b0bcc181f6597ca31139407a3. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/TCAET2012999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaaba150e3410816105db488a9efa9ad12e307d7b4d2cd685a262091dbc2c794. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCAET2013025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264d92288ba120a6d9be4949cd0027a550486c6cc93e1edeab2325eed236f070. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/TCAET2057084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5697d55c82e935c2f5b14c67bb813ed685ab5282aad7026c90596658436720. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAEZ2033721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50e0df22b222f51ca95fd1439b0acf3b4391b1e72af8ac61bc49e967e156819. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAGE2292494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8645ee0d8dd1c537a923d97cfc5e100e2c92f6c34a75899041500e02df2334e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/TCAGE2292497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071d95203c19858290ffdc43650891bafd990b9015ef36bda613761379cdd646. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:34:01Z), 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/TCAHB2328100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdfb0853385a9da5e20c93c1a2362320dceee9d265b567444d2f304a6d2626f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TCAHJ2381059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e2510c0a4073c32bd9281e687f02132bdfc5407705096829253453f5ae5d3d. 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/QZW9M2325126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ba98a87600e9399cb30abac68e60e3390e4a47a316270e6aea7c46dde2ac07. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAIF2453738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f165f68136de5fa815b79b2054b1457245ca9e8d65969ab5eb1c73d4ac58ea2. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAIF2453814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd9df08d6054d9abc0ec623f0d9e45fc9907681b1db4d43b64aa9649235ab4a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:15:27Z), 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/TCAIH2490151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5ec69b9cf0f0944443f94ffb8ccd50c4986983df4c6cd88d76911f669fc76f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAIT2466016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cf87ee162b096a8aa268fc5cea98213cea577d7cf57e886afb679b594a32e6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJG2536418.