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 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 0xc061ef03da689e4009c8264f0dbcf7bd6c6d748a0cb6af6a66900a5b8f3e573e. 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/e7a94d4a-9085-4098-866e-0cd84099c924.json and https://artists.proofprofile.net/proofs/artist/e7a94d4a-9085-4098-866e-0cd84099c924.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 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 0x9a503151127bba471866a16b7cb4da80f7ad89db9d8e32b060ed6e006a1d20ba. 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/QZPYN2467042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ca38b298250c13b0915b848cc557b7328f8f0d34e446c1f3172898e4d062d1. 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/QZPYN2467045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4e5ed35c181340f19e780332e52a68ccfe6c81f5370141f8fde1e1745d32a3. 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/QZPYN2364510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bc7d63f0a534dbfc6a0128d0ed1414de65d35d1f8908a007acd0dc5d88effd. 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/QZPYN2364514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f3938338563922eae19b7cc681c9b4f7f093ce7e8ccb9ee7a3299ea9a18af5. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZPYN2361552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054b076f9ff7a2db3d876e34d4a37353bc935f88a787313bf7c1ec2fe58c0c93. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZPYN2205814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5865441cca8d2e5f81584506102f0517c01866b9d1c1f93b428cd3d3f597391. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USL4R2005354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012b5f39df7eee0052ae0275a4334b178f8f5f48e61f2819e8f226d237562596. 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/USL4R2005355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69aabfafb9280d85d02614259363e3cfaccffabf60bfc3e9e36f5f7eb0767103. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USL4R2005356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb20b82ecae8ac5f38a2933ba2381d4a2e47988bd7551c603012a585c6db7d1c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USL4R2005357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9896b00f1d6870d7507aa82266e70b790e29756b74a90919de3794bd8483fc1b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USL4R2005358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b542c29308ab90febeb5da6d4f4f7e943a60cbb40b3a5c932764fcc20398d75. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USL4R2005360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468dca38354e2983b47aa9617d9d1c8ee4c1b78e518e247b8f34c77d4c63b55e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USL4R2005361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66688d1a3270960c2a3c588db4cd0a926d38bdd4cbbf8aed7e3d4fb1915babd6. 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/JMA272006435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30138df7c44078fb4177fec1e6e191c2c25cdf01baa29e8d480612cba1ebcf93. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QMAAK1726148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4883a15191376fc316d8533c5d131ce3b181848ef67e908bfcfee798d0c5a25c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QMAAK1726149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672e11697a54ddffb7efdb85bc0244f1e518196b56cb46227f09fbdef9c3fbd4. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QMAAK1726151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a6f4a26a9aa7244619b1563ce658652a98499eb12fc6b1e4efefad972c962d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMAAK1726153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa585e9733daaba37e02fca6286cd53cb95bc43d46adaf43964f2a76aad5351. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMAAK1726159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172b5ee34f16c170bbfc2cf506632bb44edf4f8f35445ff9f94557731233208a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QMAAK1726160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa966989944c3528368d346428502ef4ad6caf8d78e3e71b96f3070253e266cff. 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/USHM90965175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db8a5613e89c4a3ac0b61c2a49e6a708e357fcdda4de62f082f59e3901ebb2f. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/USHM90694795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa259e698d707fac56374aeaac11402411644cdc56c043d5cf2cb27eb79025d0. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USHM90694799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3955484e285d662edb98634c80ef74406801163375c467917711f106160ef9. 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/USHM90694804.
Good ova Evil (feat. Vaughn Benjamin & Ancient King)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67daaf4845b5d8c832cfb2231c117d37e164e7957b73c7f9fc528d57658d68c6. 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/USCGJ0893368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5e4d159448e28955663af5498e2e4a836bb39de9fcc00768fc41496a4baa70. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM90706518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1c23e67f78a1a9e71bc06946563b9010b64ec3c2a29b6133eed273d625fe64. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM90706519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584b7538bd670224507e87e5a3baef538c270617be461879d0576cecd389dac0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM90706520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9296e97489e33d26a15bf5bf85019d2b4ab019961ac6b4782832c52ef7e7750d. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/USHM90706521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80ce1cc6a742a04f0b63f091c24080af99df6b9a4f8e4ae0d784bb7e3883485. 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/USHM90706522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3968316289c78f6dd566a19e5903dd3de598475145bef57d1a34d073db3371. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM90706524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f223693acb151381b6a96a4e81d68cfb8ce4981df47821722e20c4c1ddf140b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USHM90706526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24a8377ae2fbe93292ecf3f41662c2907fc20d0992589f9705f4e7906f6c0c6. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USHM90706527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292dc3cfe5006157ae7a965c94bc94e19e03b1e676700a23bf8deeb534aace67. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM90706529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd417809200e16f5ab5bdc1682057e8205c552bc1355647065da37437fb70e7. 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/QZNJY2487209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ea5e6885b31f66e32b9d79f132bd9d5d2ae946e13d352768dae8c3fdd4a216. 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/QZPYN2464543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632d226f1ed1756ffae19a640421cced2b0433f2627d3162504543b1c707f65e. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZPYN2461922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9bea8a1e664942dd107ac6e788c762be8bb2a8c14362f184b725a6aaae8ec0. 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/QZPYN2385716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d204ae8fa2af5466505f942eeeedafce08f1ad75d7432db18df8fa4f1a49fe. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QZPYN2385247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac0759ba352598d7cc2e5342701d20664979d20f7f110d72270ce2076f9b6af. 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/QZNJV2313982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab513cbd66d66b415eef34059ba9df7ae7ecb9439d8c1911c7157a37d4656751. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZNJV2203134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ae35b08b37a0574a0c0498debb9684594c27afce18c3ffef47bd3d6d187dd7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USL4Q0816977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5a6ea026acbc3ec3097ab1e31df144cdd0f64422ec21cc44ef8283eda07c8e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USL4Q0816978.