1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xef261a2ac7d9034962d131d79ce6dd078085af570fe320bf7998fb0f0f3e236c. 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/861de252-6000-4c7e-9f28-5fc0b1a414e1.json and https://artists.proofprofile.net/proofs/artist/861de252-6000-4c7e-9f28-5fc0b1a414e1.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 → block OTSBitcoinBlock must exist at that height 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 0x8aaab4ee4f66a4159881cf226a75786d24cb2c80b7814aa23cd142cea98ac42d. 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/TWA459700801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1474e21063c678ddee349e64a70192fccd1dc044ebcc7a0abfbd40b355c21584. 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/TWD970200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6c7d17fef782bdde2f65b5d7b3bc0e61ef104a284295a15ad2fdcf07ab18db. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TWD970300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f5dc6b2384a6cbffe014f0f4d7ef9cb1621644c43401d3282e020f28649585. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWD970300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6501a0a73bdca4c3336dc35fffb38940cbcb9d5dd24ce2626d2aba15dd203d4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWD970300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370138df5f56907e3440d15e7cb8798c1e99fbea8c46d76615c93b4ebe207792. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWD970300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a53acfd98fb649c3c714d396a45d3a554a8668575ea54d35d06438a7a17f5e6. 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/TWD970300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490e148dda39ed49f8f02d6b62b971d3d969ca6b77de10f055fa7ff53e346909. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TWD970300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69003908e3142017828b5fb33b0e53b9f978fb5ec0b58887653c9f1965a89c14. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWD970300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffbbbcca50a2f5ee8264cbe1e9f50922cec0b86a0a3a17b91f6d9cb4519c239. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TWD970300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90845e5870e664ea63e434febf8b9716c0722b247b9abb741c991be72abf3b83. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWD970300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda600347e1c8f8b7e8cb3f67a748750964d1f4125019ad38647d5d80c1f00c9c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TWD970300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26650c2392a9e7feb969bba09eee436196dcb5f6c16f12db1d27e1f432870db. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWD970300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7becf56cd1d1788caa40de51ecdbdd352f9d16b3d342061cb46759f55e798ddd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWD970300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8673ce4580746559421d746f5aca443e64b46d8c1a748636cbe03a177197a7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWD970300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69003908e3142017828b5fb33b0e53b9f978fb5ec0b58887653c9f1965a89c14. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWD970300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee7140a74e074ef44228df5ef8dd8a1cba7157e6bcad5bbee36d7fc25fdcb94. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM4TX2057316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4d05e2b3893c52bc3ea7c33585f1130c23f22efe7364fabc9fa95040225f74. 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/QM4TW1646700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e3fe9c55267926db54a42ff614f9521513a32b69462d8eb9f158f6aea49109. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TWS831400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ef3a49bfcd2e73b340c7dcf5a61c22c9726ebcce014e90aeef20f762863b24. 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/TWE531720703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5d27dc86d58a224f42c6aafada1ca53e84cb7662a3f3795080216ada2f0317. 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/MYHY11810002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9ed0e91710f089b2ffd4245e59b8a2e1b5126f59ffcf94295b4a4ffbdb2a48. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TWE531920902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50572a06b035fb081a8169da95298e9931832a6114ad067b51b7261a0fe82be6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWDQ32200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef25a36a69a46908503afa91952db662a5dd64ccb32e6d1eb2d10f6b589a6d6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWDQ32200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353599a66b8ea7880d8b062878fab2fd5ba4bc4d10a18deaa9bfb36c0c470880. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWDQ32200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72911451648d8a7802f99692ab1789502f578c1dbaf1b7f038c9a02119a9e80d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TWDQ32200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3914be97d64d489f874f3c7aef3e4988e1ec8b2aa78f195ca4bb1da431b55692. 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/TWA532400727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf03a8141b94e8fc6624f6c680af04f366fd9452220938b07465898738922e9. 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/TWA532400732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb4ff4b217f271345b0091827034ce6263ab3023bd0b9f29ae0141694cdfb2d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR59R2086805.