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 0x702bcaa892dece6aadf507ae2aed62684d13bfa439c1908a1fe73b04be3b68fd. 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/514e04b4-2d77-40cd-b093-e57419bb0831.json and https://artists.proofprofile.net/proofs/artist/514e04b4-2d77-40cd-b093-e57419bb0831.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 0x554dcd16a25f2ea630c6493b41420f9e4a28089df6e931f124360c017b1fca68. 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/USDY41757820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0cda7cfc7b0032b67ecc229e1da075d51da6f80942e04758b22a0e52f90db2. 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/USDY41757821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b44525e05659d1ee58b130315e867bc225506df52d089ca079f64a72c9d74f. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/USDY41757824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b54af3183010924eaf5e820bc43413e46b5093dad41c23667bc2158201bd8d9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:55:52Z), 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/USDY41757825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9733e46c29b6c44ec94578fdb5bc6c32a290d240e706682aae9a3258f71425a9. 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/USDY41757829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd042beab6b189ba0c52ddce19dc885003f6c119cb731bba67a891d3fd99adb68. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:32:08Z), 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/USHM91649774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4767379d19d41f1f9f527e553705379e92573c5688f442ebb7c5b0123cdb31. 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/USHM91649775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521d5f1044895c665b7a04aa46d6175e820c8f1b6962da45bf854edc73a9e468. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USHM91649776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd78930fdbe0bb95d9ed9b5fe94158f41277166fa16eef3c9ffe0a2c10867bb. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/USHM91649780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb444c3e3b8b9a2b6e1ae8a00e62ed358235a97a5562bb3572acb42115ead0ad1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM91649783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f4d1b94f1a48bdf6d6b986462369490700c3e2fc4fb35f3c6c0be66d2ef5df. 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/QZHZ52177596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198fd47de8e9bd1a4c8f3257edba581c5e2e764a1089eb3f9d97d6f2561cbfbc. 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/QZHZ52177598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d57b5185c10da61922b6a0996cfcf342ddfd76873f5b7bf18b28f0a19fa320. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QZHZ52177599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b0d2d6ff54d7ef84c38d8401f44325912ea91dfcb70eb029fcfa4af202bf2a. 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/QZHZ52177602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287db732ade122ce2926ab19f13949e7780df8f0b7fbfe54f91444049d1af6e4. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZHZ52177603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fe07c6cbd24e6a5e6647195222184d972cfc01c0d2b08f3bf75f7d5874e659. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZHZ52173323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218bcd3981eb523af8a08c8131560be7f389251a8a1bfaeecd5647f78eccfbaa. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:05:49Z), 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/QZHZ52173325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e8d23d7022355b4a9c98eddc5b72c439768fa29767e9f711c75847f21ba23e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZHZ52173330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6454bfc608a6e9f2b32488353e0df71b1452fc2d7f049066a89fedb47f9ebd64. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZHZ52173332.