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 0x0f04e6a2ae9bc96f2131149f50401ec81d04b205ec8be4db695d014a41ef393f. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6bb4053-fc9c-4224-b1d5-7e3d0e355c82.json and https://artists.proofprofile.net/proofs/artist/d6bb4053-fc9c-4224-b1d5-7e3d0e355c82.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 0xd097d68fc5acefc486803b87653cd1f412401b54fe5914e0ba3ced811d1308d5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ATR981220907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbba3530c4c696fb411d0d2d9e95661fa95d0d844282b39fc7a62eb535b928f. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/ATR981220910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3179c3f06f3d0423ca77e8221fda40c91fbf06b971912ceb0cf4737236f2dff. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:46:23Z), 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/ATR981220911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77bf63f84cc22d4f40f5668906a913f89f7801952c811fd1c5188c6eda48204. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ATR981220915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821abce792733d0136384eb16d63f220c5963b9ecd967ee8623b4a608c6432dd. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/ATR981220916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f286c2a7bbafbade0bcb75ea3ff5e7e4f226e7163182530e2a9008c97ad2321. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:05:54Z), 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/GBLPF6788625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0963b3339895864eca5583c55a14af2a42f592b253c90f2a310bfb3da5893aa4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLPF6788629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3078b222e2d3f8a4a095e86d0d67cb60072e81622076719916ab6db2451909. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GBLPF6788630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efcc4ff720b82ca4348e136044aff0f0b04ba01094a125399cb28605d7c6a2b. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:54:09Z), 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/GBLPF6799620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2084038d935cd474d478d6fc83b2c42fb34bedacb81a666300d3fcdb500ece72. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:47:41Z), 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/GBLPF6799625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83ef100adadddfec9f34910727e8846cdca3d8e879e442077627344e8be2855. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GBLPF6801650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43299c82cd01d1b0d6ccf739a340092c575222e6e26a7464ca44cee7a5ff0be. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:56:27Z), 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/GBLPF6801652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fd4a883fee48c1fa144143a5388a2877f666cb526a05cec14250e1473fdf71. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:05:16Z), 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/GBLPF6801654.