thumb|upright=.8|Peace dove statue in Lomé, Togo, Africa. The dove and the olive branch are the most common symbols associated with peace. thumb|upright|Statue of Eirene, goddess of peace in ancient G
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9387de4357825f9da27ae0c55e89e16bf37a4fe3d3b36972db4332142a59200. 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/4882b940-0534-46f0-85b0-a3fc0cae5262.json and https://artists.proofprofile.net/proofs/artist/4882b940-0534-46f0-85b0-a3fc0cae5262.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6aa814e2fd240bb9a7fa50297b7ba0082836f9a2af2624998362af67a76e685. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBARL1200961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc21f56c6268aeb5d9342e7b29fa560cf9d2bf1ddab7fcc244dd2ee46edf1ec6. 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/GBARL1300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5a017e55f4353f3f2b6c8a0e9a21afaed131a999292d063c4a7a59511975c6. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBARL1300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f30fdb9b5d1af3394363fbd4e2e641caa34739d7912774ee6845ca5a542d1b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GBARL1300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9ec01e93cd1935f27dc946a9330056f545e6e4a6c4686ef39e25ee51a35239. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/GBARL1300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520704c2947dbe8d09e4755686ae3ca60aff2cc2acd6993f01804f49b5606ffa. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GBARL1300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4121172111313cb61fa69d81197f8e4c06e07c9b9fcbc0877e1b4e8c94e637. 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/GBARL1300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ade9774533d0859f54fac009619562cd3a977da706c592114bc1099b2e64df. 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/GBARL1202152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798ae60051cfa20a1fabf01be159931f5273a5443a25331f67a74854c91b3acc. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBARL1300130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e4ff81d280c4c0764c761fe803666c08e2d35a4c40fa6d48660777db15fa62. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBARL1200963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5162825e70cd42cea8e178549ff3a868b4e5020f6d23550dd5da8b73eb6e68. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/GBARL1301635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983a04cd753f705dfececb0b869b1a788e4ca79b773947ee979f2ed2842cbac4. 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/GBARL1400532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c6c621af8a7c7358d439e5ac83cd92d749443a0f9f55b30b0eeceb7dd99c26. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/GBARL1400542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66314959bcf20fc61ebd26cb6d24c2365c6836eddfcb8c17ae08a40e9c8bfa08. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/GBARL1401578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf142e58254285b3f290bbb3e2d1913425277534b323e6cb0fa13708adece4298. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBARL1401577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ecf4ed693c3d9fca8facfe6f19dd520c990a5a807ed87099f6a36f095839a6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBARL1400540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1140f11308145b599a81d78c666afba959f45648b6867e135b3ca43438b5673. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBARL1400537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725b5a14a838960b19b746207e2fed6efbbcedead34d94328587388d1c486d99. 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/GBARL1400536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d3492b1ca8a037fe69cfc088f2b3a43877ee2023268ac41cbe0f218e205823. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/GBARL1400533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5291a24ff0a44cb9e7b51985b7ec06596225fa06de42631c936511702c4c82. 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/GBARL1400539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2da258f4cc0a511895df59dca41cff6ec3d1310dc630feb28c278824492acf5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBARL1400433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11038b3517525c7616dda32accd9581ddf2585ce90c85b3aad64e4c767bd6d16. 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/GBARL1400883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0d1025dadaefd847f5383b534ffec5bd7119d159eca3924f1e1d7625f79eb1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBBGB1700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d2cee5b74d87964480dda7ed0613ca1201e529b1fb1e4d1e9ad465cc7d2684. 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/GBBGB1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ec4cbe32c5ca469dde5225d69d58725adaf687410da013e434f52906e3d463. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GBBGB1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3191be0c0b115ba74756d28526c15712bdea60f68be6d8f859b8420c6ab3408f. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBBGB1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4267035ca2a1a8f8c740299e4ec6f6367184e3f487bb9a8bf9daeb68663f7d0. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GBBGB1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3183e58083acaf956fcf8ccaaaa4072e014dbe1fd216f47008dd4994ff728d. 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/GBBGB1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0d1025dadaefd847f5383b534ffec5bd7119d159eca3924f1e1d7625f79eb1. 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/GBBGB1700064.