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 0x9bcd1e9f0f6068d822fc55de596c25c7c6f631716528c7762bfbf0e997328267. 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/6aa3a925-d659-4bdf-be31-514210e67f48.json and https://artists.proofprofile.net/proofs/artist/6aa3a925-d659-4bdf-be31-514210e67f48.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 0xa8957a0d1a53067c8f3208ce0af610a5a6e42a04ab94fffd387ba15c29b6000c. 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/MXF160100802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d04a05f395ad5f6bc88fed2df808674ff937aff52ece1b83df20e2e8d2c9ae4. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:30:37Z), 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/MXF169400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fc26ce568473c9540c6c814795fc405f0754b8358914a21546d93942d8b237. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/MXF160101975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866f7b27abb78cdaa0504973fdfa41a06671cb865228736a39a5f9a2a1ad48ce. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/MXF160100801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b16a175a867b31e8790a97421e3f89e992c47af0f30583f75eb0eaadd29788. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:23:24Z), 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/MXF160101386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17429d947fd3a90de692c6ed91e5ac41070dcfbbc4917aca89089ecd65e6f26. 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/MXF169400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c86c138c1d9b7122b615e15b1d0491981a4c0dbee404627b46e01339bb01c7. 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/MXF160200476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93a65eade1bb28577e72f13d3538de55fe776c4becea0cfcb0575372b7c4b7f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/MXF160200479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745eb26d6bc2fbd4690645cf8ff67f9e3e9eb1a3e389b6240c128328cc267761. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/MXF160200480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30da5212769f87af720ea4b201cfdb5290f6771834adbcef29739f8d6650a06. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/MXF160200481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f3c7874ef52c61f9499651d971457a9ac80dbaada3b9773a533df85b01fefd. 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/MXF160100812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866f7b27abb78cdaa0504973fdfa41a06671cb865228736a39a5f9a2a1ad48ce. Chain 2 (Bitcoin): anchored in block 957616 (2026-07-11T21:52:36Z), 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/MXF160100801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14538659cce3e973c7fc2e36cf02400377c736dd617d316e5ddbc0d088372019. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/MXF160100805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4b7482d1e96dfefe586e1ecbb6e0a7c249107131875aeb01d42813d88675b0. 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/MXF160100806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f3c7874ef52c61f9499651d971457a9ac80dbaada3b9773a533df85b01fefd. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/MXF160100812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdbf1b9b12fce91cf606d3de35b74a4f8d2a225837638fc1386a50f93321d81. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:42:30Z), 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/MXF160300198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77129ceec75d8f7c4ea094bf83dafcd075770d8469ae7afb30951de90491fdb. 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/MXF160101992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23494961a3e4f1c7295a9fa0d256bef9a38efbaaad67f8d2bd15b34aa72d731f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/MXF160101389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8e8f85ffe04d785d5de592ed2fc2dcaee47330b268a413f2318a01c5ed2b3c. 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/MXF160101989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ef5fbf08e3e282444c5b87a72ec90483e598067df0e77225566738332f09f8. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/MXF160102219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7b170de1f0b9c598ffc7a1ae62fff4d7a6488d3aab4a8f09044d8169172d45. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/MXF160102213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2eebae994f245aba201c9e1ff9fe1ad50ca767d87297a6249152ed61bf6255c. 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/MXF160102004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063c8006ab2135482de69a240621c31b4438c2820b8077a1e4ae6ee7cc0c32db. 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/MXF160101999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8e8f85ffe04d785d5de592ed2fc2dcaee47330b268a413f2318a01c5ed2b3c. 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/MXF160101989.