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 0x8277b923112ed8d432720441db3b39134e0686524f483121712f9ab681d7562d. 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/873bc91f-20cc-4257-8866-5121c2248693.json and https://artists.proofprofile.net/proofs/artist/873bc91f-20cc-4257-8866-5121c2248693.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 0x18b07cabcdb289b6437cfcf2b63f987d9018e515135549ddc54a336c8d8a3d6f. 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/INY242302930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89107459addee5ec4b763b351a25bd18d2fad2d9d47f7c8f7ac07584a12a1af9. 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/INY242304016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee124c04fa995ae47aa9de1a4ce80113f6a15878a3f563580cbce299bf0cf00. 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/INY242304410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbc25e7a1676bf2f92dd83fd546ccfbdb833fedb6c34f0d666eff6c2a1e944d. 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/INY242304839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694ac86cfafc7376c1c0ebf7e7807b5347cd353d0b59e449e17243f5d3e975cb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/INY242305202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a56d63ec2831136f2ce673b811258455f739616ebe0fe49f5deac330fb1c78b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:53:30Z), 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/INY242402821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee124c04fa995ae47aa9de1a4ce80113f6a15878a3f563580cbce299bf0cf00. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:32Z), 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/INY242304410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e378d2b61277d9ecc707cd3500f837eee7e0214394a7dff6f0319f347ea637c. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:06:39Z), 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/INY242400439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad1fad68821664e7e08577dc5145723b981e1411366ad882fe283a3ee697945. 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/INY242401121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cea35da6a7a61185029a1a521e541b0805fd22e5f3fc9535a90980e4550fc66. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/INY242404957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d731d9ae436a73937c695843dc25fb028acbf1c077b3690272bdaff796a24a. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/INY242404086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a56d63ec2831136f2ce673b811258455f739616ebe0fe49f5deac330fb1c78b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/INY242402821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4435324f797ac3c43d6da8c183003e73f7ccbdb9d1a81a603676e85443d2127. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/INY242402033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7160b7a2a210d26fe4696033cd487195bc5ad5c66cd6c1f1b366a3e5d12dcf9c. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:52:26Z), 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/INY242402085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61d864ae5e4ec2afaadd522a82df716f4eb562b47c6c68741d6fbe4786ea0e8. 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/INY242403717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514ec06207b0589f7b2de7b5a402d376dceb0c5e5e8b67e72efb5613aa251c4a. 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/ESA012452953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e461f4f78dc34025fbb51ad51535b1c6f3c4b10c55e38a509e2f731378bbfc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ESA012465218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48947bf1fdb505eecd8be3f7af55fab33bff2ed1d92271ebb4400c3a253cf8c5. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:05:12Z), 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/ESA012533796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514ec06207b0589f7b2de7b5a402d376dceb0c5e5e8b67e72efb5613aa251c4a. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ESA012452953.