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 0xbf9f035c2b1fbdfb8e70585502433a2f77f44f87b1c12b2442f1a922d939f866. 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/2b88e2ef-79fa-49b2-aedb-fcb997cf1869.json and https://artists.proofprofile.net/proofs/artist/2b88e2ef-79fa-49b2-aedb-fcb997cf1869.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 0x38b8b5d5312fab0a2441fa4c120ab8c13ac2ba6ce379ef3cbd1a8d41bc3f747f. 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/USCGH2587201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e43286ecfc881c21e1c1de22cf10be8a01784acaf7d15f631408329e42678f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USCGH2587202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fdcc65ed7679b64a8523ddc7d71604581844e9c4ea3420bec513190463c8cb. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USCGH2587203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e32be36bb2a9374a6d4ee2ff07b082bdd3bf18bbd08dd073a3985b98e9c72d. 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/USCGH2587210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82cd1cacf268f0810eb3cda4726d27e5884aec42cdd3b80b9ae2e63faec0680. 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/USCGJ2581817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38a1b0e6f361e9ae999720c2c31a068b72b92a69bfd4624ba8c22fdaf24c4c6. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/USCGJ2581831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c20e167f8a05f8e11e42cedd52f6a2cdcd863564f5f62937d6e20c82d7843f. 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/USCGJ2581832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d931fd1ef84b1b0d95f35f8c8645d4b62baba78bfe228dd76153580504b78a3. 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/USCGJ2581834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f384168ae229094946f5cd4ba6ec0b62ece7183aa5f47697c5fd0bba4da7d8. 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/USCGJ2581835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29c46b6d73426458efcf91a685e6fa44f0c221bff3cf70838da82136480627d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USCGJ2581836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a6f7ebd7f810750556cdc4d593a5409cb98386171184e1c14759b8a4339bf8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:42:18Z), 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/USCGJ2581837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf25db4197879c5d065dd72162eba518ab4ddfb9bb7af3c0c99376cebfe1ca4. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:05:09Z), 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/USCGJ2581838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e11ad1b991a18984fc58b1d668e67c011ae26414d0e0a221db99df3a1157c1c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USCGJ2581839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0912c26473ae98d379a572d0cb6c015aee66c9fddcd6e9fdde57598e611a7e74. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:06:18Z), 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/USCGJ2581840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0fb0ca3a37d22ac56b396f00bc7ca9545601695dede92d104466b13608e427. 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/USCGJ2581841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604f2cf28f3a78266eb46f98d3d5fa650067db1482613f026909101906ed3011. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USCGJ2581843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0e55d0b1e68f70fd8ab086308ade23c3af14248f9a9df843269cb440a21c3c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USCGJ2581844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c34cfc6248cc82ae207f79fd2bac83b5196d89e53ad131f48b62347f5a3411. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USHM22538032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4972adfc832aa927d2dd6aaf156238292eb840b1ab982ee9f14bb8e7a0b8af. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USHM22538033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb32aad67c9cee0c28e5f18b06ff3a7d93c2de56aa987f44f7afe4e17e9e3a4. 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/USHM22538034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f738e2b4e53b8d6a09bfac34f008c68b7debccf1a1e7aa97b53c0c2ffeaa72. 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/USHM22538035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303aad208052b6ece62fac5c13edb26f99ee645e20576adbc16fbae9cffdae73. 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/USHM22538036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec410742170393d69972d8b7dc59228e5376aee747538cc1993a72b82403f6e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USHM22538037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa378c1893d291e6cef7affa46fa425492b6f26356113c8ed8e8f6935bc3424. 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/USHM22538038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6accb892b9a1c8c40a55c5e79bb585533eae25e6b8b11654315915297c7a05. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:43:47Z), 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/USHM22538039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac47d737651d26a46de76c4b91442c29a3d0a0208a7f8856cdff0ee0ff39d2f. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USHM22538040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3868b562788cb776019a355fb3cb02b24d60aa5db98bfee1fb328082380e802e. 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/USHM22538041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07fe1258c91d6bc0d747af80e2039593e7c592774120815b0424930dba19735. 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/USHM22538042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a3da39e04b9649b25a3552d6e715d82fc1c51b32dbcdcbf52f5a4e9cb559db. 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/USHM22538045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7df5b4c2b495807246d65cefeaba3c9e9ff8d654a5650c91a7a064c1016c340. 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/USHM22538047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf977359a1dd80be8c95f80c3d4c0ec4b7a71c8dbc54a2818b66a087efee3e255. 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/USHM82520961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179f3ebe2106971eb1f1ed0cc52e5313c44a265c4b0e73b0263297e8c67d9da6. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USHM82520962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cf3ac5ab690b8cee6e1246a326f932b1a9730d3b820ed97dbd3025b63188fd. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USHM82520963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b38660fe95519f55b11d070f6b70fceec63053d1440545ecd08bb51fee48da. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:42:49Z), 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/USHM82520964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9652c454224c6badd28d96ef384dce17b8ee2e94e28752bb6636bee00b2758f5. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:45:27Z), 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/USHM82520965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2fb35b004f124146597f8737400e38159835c5f39ec0d83fc7d3e553d37bcb. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:11:27Z), 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/USHM82520966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407be3e6ae290e5092b82d88f333f7d0af405cee53c510e71c529707f36cf60a. 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/USHM82520967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805a71ee4b80c2972bff36db3af89b15a03248ec8740208cadf34b76a27d0255. 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/USHM82589410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbf36055395736b164fb8fa0664f0a9dac620c4249b1eb2470f912ee557607d. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USL4Q2562257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b992233137697df4d621c93a4abb8e8f4667b78d3fdbecf7e62e8e3657f7ac. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USL4Q2562259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea29bb4a5e585efcc70161a9154ffe7ed67184fdf01d8aecd449942e1d023f3d. 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/USL4R2555120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c4666255c2709917e427c15582d1127594ca93df62415650f6577186978ef0. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:07:03Z), 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/USL4R2551278.