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 0x08fb4d2731a5712e36a877660016070641a9ab8c3bc58dfae7266edda373cea7. 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/18678dac-4e31-4b71-8369-859c4fb9b78d.json and https://artists.proofprofile.net/proofs/artist/18678dac-4e31-4b71-8369-859c4fb9b78d.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 0x685419330b45da91d4c25096954d678c9b5c7e4abc2cf966b02e7b58d570459b. 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/DEEU40800198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d39a44b7472ecefe9b46e461b47aec12ed7e31af4b7b13039cb9ab1477ab670. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEEU40800200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d720a7cd23fa4b6aa5ab376e083f4ecdc5aa246845395c1dd992a220c88805. 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/DEEU40600121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77da32fead421ef93ea37f1c6b08abaa0d7211a659d7a412a17966af53a19d72. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/DEEU40800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2583e539bca78b4b282d500b9ad3fad3d35161df9d0eef23e421949af5e0c5. 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/DEEU40800204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacd8bbe320b48026bcbbb9f21e5a32a61eda184adb66cbb00b3c43d0928565c. 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/DEEU40800207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45d5474ece50e024fee48e6608848efd438bf560f739d228ee36322eb5d4d79. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEEU40800210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1575734959acd4b371a6b6b5c83ab799c889fcb44ae80aea01fc64fdf84da2e1. 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/DEEU40800214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5b443b6dfc3cff8a505356691cf7619b682c3a51a972838439a93151dc105a. 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/DEEU40600120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd097b5a25197d2a02a7eadb92763e2f2fb83b0ef06599015f51c5707bad69df0. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/DEEU40800215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9350c309d780448993f3928a2aff3f98df437cb686135b8dadced654c9d7e3. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/DEEU40600114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2827c6d0961089d2a8375f130daf558bbeab3def310dd1905b5f80714b7c377. 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/DEEU40800217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01515d9f9783856bc9dd07cff7b9f157df74c0225255346691625972193ffbf. 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/DEEU40800218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27409cbb187310b5073c4b296912be193806153c135c621f5d6a3252c270e12e. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), 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/DEEU40600111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d6a5a92ab886e686c1d88d7c859e60afbe6020e3dbcb3501ab072bca3d8bfa. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:23:36Z), 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/DEEU40800223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852399a1cb2109a29bfa98748348a6e687a5a0a5d008f3d236d46ce0c8c63b14. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEEU40800224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974c054b3bc8671fccd5c73d1ded0b03afec877032aaae5e7cd5f4dfe59fdeb7. 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/DEEU40800226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929ca7eb4c69567fdf93db74d34aea13eec71e0aed9e12743ab07fd3ab16a55e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:52Z), 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/DEEU40800155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d4da0117c5e338d8b320ac63eed9b729900ab09fae2dd5feb60bc52c4c9542. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB03A0921899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3aee20e4568707e745ea0e37fd61e1b7a8cea378b1e06331474104d55550ae. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH6540818600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cb198ca3bb44a86b7711398cb17d13f4b82fc4a51062074761e001338abaa6. 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/CH6540818607.