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 0x9e1315d5d97915a7bebb975e678b0121659a41be628954f998d663afca676f18. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/096af5fb-7684-41e8-896d-1108c1144e59.json and https://artists.proofprofile.net/proofs/artist/096af5fb-7684-41e8-896d-1108c1144e59.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 0x6cb79ba1d74ac2f6956e6a64ddc6573f0ded2db2f407ffc88a30945c20be31c9. 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/UKR6V2490773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdc494d0f2e3754c96e0a3bf6e7b36927e02cdc002961a6de37f3e73b96b326. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/UKR6V2490774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4a2b48d89cffce1f25dc914a67cd680e13d2d377b039cf5cf9ef37c2bda06b. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/UKR6V2490775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74974ffa5f49d0cee7cdd9dabe6b5d4d6fbbb7bb43ea0fc9514394898b7e3756. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T07:55:53Z), 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/UKR6V2490776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa10057ee98f49708abfb2c19ab07b072b60eb7e8ce0e7688d2072649dc6ce0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/UKR6V2490777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5e0508a417e504029d32c49e923fe2ba7e2a5fda09adcc3486b71e4ee2ead5. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:52:26Z), 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/UKR6V2490778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5b31f8d58f8f2ebd8a2e5bdb5e0681fd565a9cf006e548878a6207d8123f48. 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/UKR6V2490779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc874cbe8de56178d042c6057347659092a9551d6282cb931b6fb1c5298763d. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/UKR6V2490780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95928174103affa0fdd37c5652310e439e3218e96280343cb01520d85562ab72. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKR6V2490781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c55b7d60977c68da404919ad3121ad0086f60cb5369179abfc4d5fecbac1bb9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UKR6V2490782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5baaf1345afdb3d6b03884b8745827f7ec66237a1572c0ba835b1ac4087bf122. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/UKR6V2490822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f9360bd2d1dddf151041c212d430b495b130e126ee3991c3b71601465d88b0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:40:29Z), 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/UKR6V2490823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38692af64afc99ee74d2065bbaf5932a7cddd7f18e987a33f03d218bff0074a1. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/UKR6V2490824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7225609428f3b2dfd17a7603b36e9c2914d23b8252e9288be24223e7c1296e. 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/UKR6V2490825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08454a054891a82425825a91433022931e2686979054954465b4339a8785486. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/UKR6V2490826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a393e7a9dc62468cb7da3d8176ab003c876b86c35cb23d69228f35a85574ea. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:56:26Z), 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/UKR6V2490827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee75747fba939c7cce00483b12c130ddf7368552a7b3ecec750162dad9fe5e4a. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:24:38Z), 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/UKR6V2490828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d205cf1687925c7be3091a0bba57fa6a95c145f15f4bbefff4026be287989a7. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:18:29Z), 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/UKR6V2490829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b865f7b054f1e7530c63322b43934a48ae0f37e7fb86bd4ccdc52f3d0d9fc2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:28:58Z), 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/UKR6V2490830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d729a3783c4c091082eaf979f066be6a158c04becc35b0dc981634bf3825629. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:50:11Z), 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/UKR6V2490831.