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 0x9b286f9d7a8f19b649f6509a1d8a2ae077f3268a1b2b4cb707e290880032cfc4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13f4e736-e5be-481a-af86-408ca151b114.json and https://artists.proofprofile.net/proofs/artist/13f4e736-e5be-481a-af86-408ca151b114.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 0x019ecad6fd09766b2501c81deb1792d262b73e2b0a53d16e1685cee0d8fd284d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:18:07Z), 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/TCACD1506431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0817152e4e4352bf93925a61cc4de5c0ecefb91d30763f7dde51f2f648fbcb1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:18:37Z), 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/TCACD1506460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f49efad5bf24fab01ff1aad623c55c8838c0bc7cf2f1af5c211b633ec676cab. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:12:03Z), 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/TCACD1506471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f30ecabb17871253b323040c1048a1c8bfb572d704e8dc3deccdbc179fa09d2. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/TCACD1507056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd252d04d5161b49f36db483ce938f1b44d9aba52df3433553ce3b8aa47c064d3. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCACD1507060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46d161abe2ef74f61dcb65d91cc345a080643605f9aa2c309d240c3ca04b128. 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/TCACD1507093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb607071a45f7c9a82bedc9a5a17d36ffd8639ef8c8d401594a073fc90c817aa. 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/TCACD1507099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeaf59c62833adbbfb1c29e53e167ccfd32e6786a2d69003512259198e7a32ef. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCACD1507102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db3b4cfc0fa83f89b4d143cc78d123592e6d7c7f54aeb63dddbb19f4177105d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCACD1507103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d64c41b569f007fdbe9e9eded85e9a48229053f13f6a0499e0c2d1fe3f4a55b. 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/TCACD1509237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68162889096fd8ce969fc5d62bd4b0e4e98a42d523bd470eeb4dcb6a06900e27. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCACD1510901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf6bb82568388328f4c7e7547beb701d09dce6ef38c2946734ceb83f2bc8e5d. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/TCACD1510906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa32fc8bdadf4cebbc8767033c510f231ecf43e393527916366f445bfb061ce3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCACD1510909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe71276b14770934a74c01c4a5d21b7ac792598201769a32f30383aafc09404. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:40:31Z), 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/TCACD1510916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090d495db61f66050dad820df5ee144211eb01618b89ffd6e14cb4c00dc77d43. 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/TCACD1510437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4ae338f4740de6da9105d42e2471275eef1fe74edaa449f3179fc1435634a7. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCACD1510441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e402593b52b217e2e94cbee5040298cddedf1d5c896b1d1c7ee455e7081e395. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCACD1510447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae8be87b11f372657286dc2b77c1daba3fb6ecbc65a02fc10d2f202abfc36be. 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/TCACD1510450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921f3361931cd0be14ace4128d00723356929daa529dbf1258e2c12c085efa89. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/TCACD1511168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ceb3a0e35b69ff9a3d052ab6bd2b81f3464fe1e495218cf59b4f0a56f2d207. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCACD1511170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934aba9bf914f39e789337164c3a43f63588f9651b324ac3dd5a9c846137309d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCACD1511176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a9ab05c3ffb7b2ae960f20dad51a6d0c183929b3ebc72f64fbc3d4e60ac986. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCADY1857167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7653647de4d162df6486f78691dc8f3321141d5a9a5b245030a8a247d10f2f6. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/TCADY1857168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a29a68e6bc458b39aa820343ae916f6b4d036a8192a34e0914dd6415c9972b. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCADY1857170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b359d753ecf60dd69907a0527ba4a9cace6b3d16f0fcdbe235f2805dbe37a7. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCADY1857175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f4815dc3744327e543d151f28c2f0967a26382e7ebf6087d05d7eb6b337863. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:38:56Z), 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/TCADY1857177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa935bcd7a32855ffe3f2134aef646b5caa7a36f8589931f3bec33e1280582f21. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:22:11Z), 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/TCADY1857178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8ddebcb0282be692e2ae7e62d2a79e7aed6b120c65c4a75f495ba522f60032. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCADY1857182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da5d6d83d10b7efa8f6a56b78f025c0f92e1ed9c801a6c4ec1b81ad46ab6089. 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/TCADY1857184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81db866a54780d43ce492519338be3dd53d59a12de61255a7548b80e4c2a067. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCADY1857185.