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 0x115e14e5a777543752d82cd0565b878976b1ec1a23f5c5002c311bd7ae704547. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/042d3eba-9175-420e-9211-1551d711f90e.json and https://artists.proofprofile.net/proofs/artist/042d3eba-9175-420e-9211-1551d711f90e.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 0xfbcf05fb6f2b439ff32e3692ef6b8c5656e5f54803370ce889523daf6e25bf31. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF22401040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1746f14144581f509339b26071aa8b58bafd10e0ceb0f38ad8209981a4cbaecf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22401041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f44880a51733f17fe41695ffc9bf11f8e70af597a477153b34d2a276ab4859. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22401073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2da4934661bf738756be94602f2cf46653cfe335d8f24ca1129290827ac09ac. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF22401043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e66413a3e4b617bcbff4093626a6163aefcb181a92cbc514cb13fc8b9a747f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEKF22401044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf948ee6ce9c8dc202c4e41900e6da4bbaaf25c73b5c0c1eee198108b8fe11b7e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22401045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60814df2321fb353aeb59b15d6196d66a30f9a1058cc43cf7aa990a4e88e93c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF22401046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213300f3a352c5dbc86ab9f632fc9aa4da31c77e6ed2a00dc2b17dae57dded53. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEKF22401047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843d9fb649970601f88dba3c096d03b9740ffc33909114a818cc2509ebc9f3f2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22401048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc264dc145ae4328cc317f9aac7b274ca92ff12abb9986c667bac979afb08739. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22401049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9367a4dd1675388dee6de4e797ad68ceda70c5aee0dcb3c692b0d0d2d01384d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF22401050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086d0c2a4ce37da031e40b77fe578077d43fff45709c2bb231b70600e8d9b4e8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF22401051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e46f926c3987070c41cfc0b02135a55ae506f13ca85af2771a6160fc501a859. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22401052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c4042c75cbeceaacb997183cc251605e7166327a9f4d6b4922b4009d79e2f5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22401053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f157ee15eb9413d5c9d5516dd365298cf1a9985057e7e4995c1c0f05ad23c61. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DECE72500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816f4d56ad9b13d26d33d45af1f40687dbe963e28e465928478afb2da1a9fbea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DECE72401804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16777d8046fda3bbd196399e1fb8b9b0c88af3cf33285b593e244d082c423af. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEKF22400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213300f3a352c5dbc86ab9f632fc9aa4da31c77e6ed2a00dc2b17dae57dded53. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF22401047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f157ee15eb9413d5c9d5516dd365298cf1a9985057e7e4995c1c0f05ad23c61. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DECE72500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f157ee15eb9413d5c9d5516dd365298cf1a9985057e7e4995c1c0f05ad23c61. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DECE72500053.