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 0xcceb8afa1a199bb60db13886c749075ccaa1982baf0508dcfc7c95a9e8fc075a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33cf870e-22ca-438d-893c-748d5892aa5b.json and https://artists.proofprofile.net/proofs/artist/33cf870e-22ca-438d-893c-748d5892aa5b.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 0xfef5ab01ae402ec403345ebc2cf308e73cdba9f6835da69f1bbd045da0a3e3b8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEGR81201880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8c023ab021b811d0a9fb7c7a35b642d06b267726e8132acd4275375e85d15c. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEGR81201881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450eff1028252ecfe24ad0914c3a16fd3a81f3260f86b078cd4937ffaaa0c523. 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/DEGR81201882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66c2ab6629eeaf68679c87171120f4c3db059d2be000bd13d745f39fcf64fe0. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DEGR81201883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d10bee759b48c5bf3d8aae7d45aff92a1cf600114791e2e7ee3e0238c64357e. 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/DEGR81201884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb377b169fdaf2efc993166482a04815bc78b420ddc18c18fb9c6bdb9b355c080. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEGR81201885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6c7df2001f80392649cf0570dcfee362599b0edf4ce297ed173727fda786b8. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEGR81201886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4050a833bfbfa66b4aead1e11f4a1a57286224bc602d689952ab1b3259b69699. 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/DEGR81201887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247fd72550bc4cae412a22d33e76654d64a4c5f63c26603fc92abb8f5f938db8. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEGR81201888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ae0c809e97912505e18c56edc73361d1d1abccbe8774aaa0b978a199be81ad. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEGR81201889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee1f42440ddb512c27f25bd08c5bd28537e131abb196238bc9d6b23a1025362. 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/DEGR81712370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132e68c1e0e0d9e4fefa483af12f027c730cb81be33a64d01af3d25a726ec026. 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/DEGR81712371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48288d67f46c5492bf4d96bfd1e68caa3df109cd0b59d09b7b359e43162cfb1f. 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/DEGR81712372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bb3e55b9556e0a705d38a0c64cd3014b8096cc0fae07d3d74ca2023cf34589. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DEGR81712373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6063678c0ae4ac984aad909c512e442b3468d362c891068339b657980def9c11. 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/DEGR81712374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf722514e30b3b7f004617df5ba4122e2be9c34dff6bdab5be533acf08d610f41. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEGR81712375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56d0b81220a10ec5560040c6d8261fb745af4aba40dd439cbc2b0505d04ae25. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEGR81712376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeff80dcf1ff897ace43def2b2f1d4d9468c3f3947a9fa6f65faa00c8406b060. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DEGR81712377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ad4216078584bfb48a2f42ff6851a9659eab530be0c0d230117769deed39e3. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:59:13Z), 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/DEGR81712378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2e33414d3f90332a5297fd144e8963c49916abec769bd24acd6dabe5674140. 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/FR2X41825989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6645054a760812ddeea2ee25c0137211cd6bc633813930203394300497b4519. 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/FR2X41825990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda754e8ba41b43756eabf5e2676dd975fcbbb648b9dbaa5afbc278a3e440ab65. 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/FR2X41825991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cce93abdfcd4ff1c3fa296289cbf23b9489404158171650a400961dd0fdd71. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR2X41825992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe29f1dcc885e718ed058d5eab0fde65a37b6d112e96eaae250f23adacd473e. 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/FR2X41825993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1e936de303ee78495206bf2aa4858b911d4f1ecc675fffa4c986e2ac481118. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR2X41825994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd044a1ac65de7ea15f9b3827e3e663505a7372a8dbad3c7b8574c9f34f23b1e7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR2X41825995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78bac837d271c6c94359cb49a065c807b5cbbfe47564501e5cb1e7dba681fdb5. 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/FR2X41825996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f44830440d3a0474fbff6ae623f63bcabb741b9ac7f4d4b937b811fbac3cbd. 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/FR2X41825997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dc7be49af709063eadf2652bf714fd3894fea6033cad29226de6e5f33778e8. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR2X41825998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398be48d25aa09e8d84160b93ad853270100bde3c647362c8363782cd3ab9011. 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/FR2X41825999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb3faabfa3030196f0d70d1312ebb76264f8bd4b35f181f369df592daccd503. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR2X41826000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc129687919e0518fa4630ff0b79963004a40e0a1aa0bba1ca8b0add48c39f5e5. 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/FR2X41825979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc38bd3be61391fd2f39636ab6da2a16139d512f460605f158662a46d76803d9. 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/FR2X41825980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06fad216d2d50449361da10f60a569feb727917edc407d81a80802cf5cf14d3. 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/FR2X41825981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a5863253e0f6102d24a1868c902cc07e929a6ac9bf523826c30465f8d622cf. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FR2X41825982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2484f0d2440c70dfd6fc80e4ca6238113e2d7850e524a189a087444ad6a8d3f2. 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/FR2X41825983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa8b798813366d856374cf29cc4efd4c4aaa47de088105769cec214dabbd069. 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/FR2X41825984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8aaf14142845fbbf3bb559d253483c63c1a38bd871fb772c0f0abda496ab78. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR2X41825985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520b9eb376ffd40da19faa224d9d9cbff5fd69553f6e4970666304d7a3a4f9b7. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/FR2X41825986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f89562b6c61bc033ebb469c018593ff110810dd12b58297a7da01074ffa945. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR2X41825987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadd05c77be08b46d4b972a0c7966ee7889b6e4f457283e76cffd5bb20451225. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:06:37Z), 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/FR2X41825988.