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 0x3f4c81623ed69cf0925a836c83de65e1d030d621c2569e0d53dc35f732b10f00. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd8154c9-f157-47a2-a609-f7a9866efc30.json and https://artists.proofprofile.net/proofs/artist/bd8154c9-f157-47a2-a609-f7a9866efc30.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 0xa816271a1a6154371dc67a7acdfc18ad370d17296ad782e85eb21a7be837c146. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:10:41Z), 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/USDY42455484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7badc518afdf9a48b3ad26f7943af6bf841ab7f78f35d2d4892bd72ab0a2bc87. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:04:53Z), 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/BRP862400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee40bc2337e3cd1283734453988e2db602048f1ac070cff3855e80a1ad9cf6b. 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/USHM22438893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce59f267c54ff8846df247d931e66442dc01613a8969748514ccc4c87cf2468. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:55:13Z), 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/BRP862400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03811bb6bcc2b01dbb9571af018e384897b8c6f09035faae783f82cb4409a203. 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/BRP862400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cd50aee262bbe8e0f90a9c8a85d916b3a88429eb42eb609fef2b70b0cde03a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRP862400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d68d3b0ad5df9665d0d08bdaeda0567641fee3d1a39e40955148ca3b2b0263d. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:53:56Z), 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/BRP862400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03811bb6bcc2b01dbb9571af018e384897b8c6f09035faae783f82cb4409a203. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BRP862400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7badc518afdf9a48b3ad26f7943af6bf841ab7f78f35d2d4892bd72ab0a2bc87. 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/BRP862400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce59f267c54ff8846df247d931e66442dc01613a8969748514ccc4c87cf2468. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:08:58Z), 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/BRP862400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b906c9182fcaeb1911f27b4fc76c4a83a11692bea6a7f62b8883f35b18ba3a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BRP862400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d68d3b0ad5df9665d0d08bdaeda0567641fee3d1a39e40955148ca3b2b0263d. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/BRP862400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd975a7605a6b1f4a40f535a61b3c290d1961c7c13c1b1063a5af59dd8466ad13. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:49:53Z), 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/BRP862400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170728c7c48668177e37fc590645cef48f42bba9116b74b0ed311e9dd4bd9beb. 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/BRP862400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fbff27c0e98c4a76492c949de50bb6cd8ed028e5217b16ab8f2b6618d51471. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/BRP862400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3295ded613728df472c06b0729113ade665715c4c8a58989863fcc97dfd690. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/BRP862400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc71b6a700de500a2e107baf35837a089a61f22fa21e7c680e366f8bf2ffb23c. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/BRP862400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c703a1a7d2debca47ca1087d5817a3b7bf45d2275c802f83640987626c46a91. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:07:57Z), 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/BRP862500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa1bae0291e55b4fffedbc838b4fb28ee7221aba18946147120ea0c06374c8c. 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/BRP862500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26135ce6295bae3f74d5fabf2987ef25ac05ae74ff1db54eeec5c04a6d1f159e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:59:15Z), 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/BRP862500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab832cd11149b80f35324833092f039bc68809c8813d36592c9caf9f5cb24611. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/BRP862500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44de948c5f158f821bc31f7e1ecc2a5542dbac96dc9ecc31411f8cb96f2389f9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BRP862500014.