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 0x46d7a62522e9c0e41d466daf18531d62ab116fdfdebef333d70ccbc06434da33. 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/f02517dd-9bdb-41e1-afd3-c3905448a250.json and https://artists.proofprofile.net/proofs/artist/f02517dd-9bdb-41e1-afd3-c3905448a250.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 0x9f0a91b317f86291f5cf3142ee3c92485a7210f66ce2daa15600cb4cac720c43. 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/QT3F82538255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc15027730d68f94d529dbde75041979dba8bf56790b311fdb0dca9bda63550. 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/QT3F82538256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8b97f36ee841c32e7c362e3f3e7bf89e85f147fcb5d9003d4408febf84acf7. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QT6E62539946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ac35578e5af4e4dfb1d86383d96052a7c0b1d14b3e0ce0432bc840493ee646. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT3F92544700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad5df71fe2857ea7993908dc404cc40385e744fd147426833b6f7300ce57152. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F92544701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d93cf8411037cf302618f47b528c4d6047c4f849e3ff91787a62e0ebc9bd11f. 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/QT6E92566169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906fa264f2dc7e3f1fa32fefb81bb9db6696af4e123d62acdca2cdaa9f4a93ea. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT6E92566170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc3975d1d9253ab89c72ffccfa4ca0c084c2122177f68ce6309a6dabd227aac. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:09:05Z), 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/QT3F92544699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15441e009ceec1c0ae5258575699a1424bf6d00f61ba0bf83b3af33b1887f14. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3FB2571593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4740d5a5432a82e2a057bb44cf7fab152167b039d40483f22895b3cafb8e06fc. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3FB2571594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa683423f28e2b7894a9a849d1221cbef6563e57384f543072a709f7b83a6e1. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3FA2566802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d71cb56ef59e0728e8b5465fa2fec50e17af61d8fffc9647a7e486a4d3531e6. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QT3FB2589182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7ec5228cfd8f8013d3464c2727e19c037cab65695c22c41b29bdcb05fb2978. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QT3FB2589183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662ac1ac1d61f59f7e3d29089f15cf903929adbe21709866dba7e25332972193. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:38:02Z), 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/QT3FB2589185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7064e83d5871123f59966187e173142374f70cedf5a0b1a167d81c0073c8bb12. 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/QT3FE2561184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea908d0ef842260bb7e3d0ba1e36acce9b9c97535daf1f76137168e96930d7e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QT3FE2561185.