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 0xeee32185a40544273880adb033f24e3688357869c8049696e6d6720b5e89f218. 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/e4d3e918-477e-4cc0-8602-9e18be130f28.json and https://artists.proofprofile.net/proofs/artist/e4d3e918-477e-4cc0-8602-9e18be130f28.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 0x8446bc8f3cf9bbae409704c0ed6eeb00f1bf75ca32b89361387a8692c2072e87. 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/USCGH0723685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f3fe2e63696391d922dcfc0b3bc33edf75c8b0739dee11d32a253d26c097ca. 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/USCGH0976653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c292fd4723fbc80bba00da38f9d10d432b09c5f8c83a55e48323c0f2d6d067b. 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/USCGH0976654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ead07a23864effaf1bffb033532cecdda3a4750e051be85704f0ad1fd39fb9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM91063458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e257d553995273c11a93211af28c05b7039a993829a03f37ea789a2a5b8e39. 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/USHM81406846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058865bd82cdc1a693216b232b4ebf171b7cb5b962009e6ffd12771494400abb. 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/GBKQU1624373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607582004634ef898e34d3ca6906353d8f2714e9349b8a5eaf8190107dd10a70. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:10:23Z), 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/GBKQU1624374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b467c39e9d4d4347fd660bb6bb14d14003aa1f4c3f623d6a5098ffc94e73032. 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/GBKQU1624375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1950a7b0a45cbb73d606b774bcae15357dbd47112c206b783f70939d4c2bff46. 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/GBKQU1624376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1a7ad5f49a3212d41787a8f9bb2646760ca4bd6cd362691142daa42bfc265e. 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/USHM21697346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d2acc8cb8002c859264dd7dba8d403c5c5ac132e2d2c2794e4e2eeed1b28ef. 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/USHM21694439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1f0158447a0ec3bf04706176ab904b511e4b04776cd185a1c08dead26108f5. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USHM21694440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca3a1db6fdd2a7d10caefbfd85dc9e92df20527405e2ef724ed6a88a58cc20b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:06:34Z), 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/USHM21694441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1a265e630462f29770a1cd39e2ccee654dfaf31f2147ba48e8edf6b985e1b7. 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/USHM21694442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaebffefc465948d0fad7a94e52df99e917334537418e1e60b780c645fda61d. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USHM21694445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e5c9d6c64140578872b8a20b0310d8fffefa867d4f707ca3897a38fb219cda. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USHM21694446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672a8a9677c9114f4a36cb70cd7bcd5e2655872b80dea51726a212254c5e213d. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/USCGH1941589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7519bd65f00633695c978aaf05802efda0414af7001af0b5415ba17581a100f. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZKDK1912259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68694b50fa20ed1e3033f438ed2b9ff0debfcb57aceaeced8f49bfa4dcb3e922. 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/USHM22291174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d04e0f6c83e1448e5d8dcd4a4fab301d3ed295b2eedd44756a3b532b7c431e5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM22291175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4a15ef9739d4289866e9c631dee16bffa58b303a04e61b5e8d98b638c6b9a8. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:37Z), 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/QZH5E2469730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549c78317543756db5081e276156effa66cc0de122b9d02ce990b40717f3cb22. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZH5E2460765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf44b0485fe8ec2b012468670b7016de2709840dc2f25d67f3c34b878080a63. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:21:00Z), 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/QM8DG2513917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffc4f4e51ea7d460aaa5e925252f9d55d19abbbd6e9b147b30e0f6b05b0a2c6. 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/QMBE21703003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905d47a08f7bf2981486c04f0fa9d0edcf3b84036688b66e9c774f6ca7e24afa. 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/GBKQU1785113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d8dde0c7d3a8210835db34d67a3231497c7ad9cd96300d373b011cdd9847e4. 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/QMBE21703005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72a7fada532b86559cbabf10d503e10ca40be45302445c1f279c8712c06d0a0. 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/GBKQU1624795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4f496a471258c109d0bed0e12ccf2f61e77a8ced36d42f28e949c16c44808d. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/GBKQU1787846.
Isles of the Great Goddess - Drumspyder Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8048e2443ea5b20ce1b0020e85cf06f10d049e56cc5da8384d96de8650a9f61c. 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/AUOX32200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9c00dfea8bb432b497d636620c5ecc6dbe7a03793bbd3880e4a221975a52d3. 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/QZNWX2111917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1fc21ac38c6d0e8aaf5681eef3eaa07c55e128efe5ab7c901dbb48a98c8704. 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/GBLV61500013.
Nomadic Ecstatic: The Wandering Remixes, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f7903fe247a6d62af42190063695a0480e31bda276ff9cbaa29cbf04a93125. 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/QMBE21400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8566f3be595688ac4ad27001e5683c999ffd7b59add580292bd2cafe742fefee. 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/USWS41212604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24321745f10892b1378a7c7af52db63c45ffede5c17f1364b3614a05d6d99a0. 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/USWS41212605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaecf872b93cb0864d2128248564076524d1d12bd3a21b4dad6a5b09c6602825. 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/US4R31116132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a72f02d1e3a565bf4ce03e2c55b6c4491b46c2806abbfc5ad8f9d4d15a5083. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKACT1615478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e0456ca7a51e959dbb35d81ff5d72f50a6ffa9406f28857bfb407aaaa62b45. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USCCW1010114.
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 0xa95bb162db928e4047e6ee61bf86f1fd05b3d51bec7ec8153c79169de6b90ff1. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USLZJ1516558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4398e2b84eb8134cc92e26d4a18a2c028e0fae83595913d595949d3abc9c5ecb. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USLZJ2212338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d99b9da0d7fd6b33b4d987a5e87e0d9ea011b1a563ba0eaca7f17f0bbf9047. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USWS41380103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6208cef7cde66ffe6f241f79b3caaa2f92af8526350d12d8f0e8094dad8ad0. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USWS41390602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd835f41f3dc71fcb8942694f3ac28696797a75230ce493484396dfe265f67ded. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZFZ72137102.