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 0xeb596c4d18e49b5222464898c010bacd93f51fc7bdc02a341ba68d49c5112e95. 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/719bb108-3d66-4711-850d-2926a7a37c4c.json and https://artists.proofprofile.net/proofs/artist/719bb108-3d66-4711-850d-2926a7a37c4c.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 0x4c30830025382837f818b8a8eaadff944d9d089813c75fee0a1ab778a0c97ed6. 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/QZTVM2348386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6901a6d47647cd2ee63d523efe0984238770d64bc126868ba77ea5aff5afcdd5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USDY42252899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44981be5a5a5ef6c71da1aac2ceac9ece1aaa5723c7a48e344fb6740eef4b16c. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/USL4R2226190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3e6e91f2c103478b4b3f43e019a887319642fa0d584b224d1a08f3aacbaafa. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/USL4R2226191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbd85a39711fc33a1011d9a0df52ff8923f43c50bd1a45b52323d1ba9f3aa89. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USL4R2226192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22fd778b9183ed06bf2b2af861402dadc0473ce40042d83ef7f780c50304ca3. 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/USL4R2226193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8eabc284818af7c276268d3c18439caa81c517a0343945b00ef78def36c1e10. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USL4R2226194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d9a7402b78690cfc3dfc51e64a272b2da60fcd38eecd1baa5ce618fc4e5ac8. 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/USL4R2226195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd61c02214c3cb79d985ca8052b25ae2736729d16542e58d30a200ecb809a8d. 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/USL4R2226198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f19f4ca785bc917ef06274fe2e474e0e5f144b3cf794152ec229f120eef7663. 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/USL4R2226199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2004d72fbd55dd420b8d2e72192ee6b3eb1b226cc72978af54a77b8b0c8476bc. 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/USHM92481481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfabfeab9bb6b0540a3bd8f9e04d9b56611d2003dbf5fed6a7678385fb9fea1. 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/QZTVM2334252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733a99ab0f5e37a84bf068131b3328ced310fb1df135b8196f0172b48211b81b. 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/USCGJ2373926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31f7ea9d35d654056247108df177e48aa112a07b44005462ff8ddb9c8a62994. 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/USL4Q2453821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd015663593e92b2ae05255721799948ab60365dbc01be1b19a6bcbbd4750a32f. 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/USHM22489765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84605484835ffbf59b0ef7ada4376c5e5b8cbf4e5af041fea6c342897f9cf07. 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/USDY42424443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c4296f16b6379cf1b940be6108090255a234f83b7e268c77c994f02694e051. 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/USDY42424444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756361d6a4c1d5dd9cb80744e130238c7c351b9b72fa29636ce1a4b0ddfc01d7. 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/USDY42424445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475b1d4f33f2d5567cdc4b0ad96906da7752f8ae9ae392eacb906c0729f81c8c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USDY42424446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94647ba50f012c21006a63e5f217773e9e0a523d90e2ffe3c945ed531ba3c86. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US7VG2474434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7b7b6658028c882235332b1b91e457722327e90fdde39f49747cc8441c32ca. 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/USCGH2407965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e49b292a117f04e62402e3d8ebf4759301ffcd7bd87610e1621d5457e41812. 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/USX9P2353258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce69d089a922c20e5dffbe022fba17ac9eac3586bfe1cde431aaf008138dec35. 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/QZW9L2329968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80cc4eece4fffe55d8d4a74b50260b3206435e04d03c5d80d05e40bfa8f0c9f. 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/USMH92346188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f48e71a588dd0d81d3c149b6532865f15342bf72d790b1ee75271e57453f69c. 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/USHM22356303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b076081a7a1c94b72e75195bff2efea24809c96c73383412108b4726f9adfee. 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/USCGH2349992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c463223bae66b8f05921282e7e5371ed78da13ac1e97e7521268e6c67ea9f8b. 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/USL4R2246848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6724dd6fdf26a3d724bd9c03bbbffbfb0d740f03eacee5f36193e06873a55fdf. 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/USHM92202158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95983f08fc1f28f6ec073b8ff3d4637cc521372775d1e904233a63bb0b18796. 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/QZHZ32209758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f96cfe001d57fadd3fd4a368b892f5e6e49ba0ca2bef01d63417d43dff694e. 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/QZNJV2151884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54567d06f602fd5906dd1f93c4e6f828913c79a50d0f7dc15158a1bd465514d1. 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/QZHZ62176857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfad1289cd0e794f804a2e4a84136cf7fbca6ede125544f5e18e918a88355bd5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHZ42169632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211b808e2fa103e14770ad80f05765339fb1de15eedbe7fac1391db2eb7899ef. 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/QZGLS2104920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389222c376b4c93c84b56b0e4ba80024ed189347b668c1ca851c9d4e35c998b1. 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/QZK6F2336407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cafcb9af353dfa05eb5a185afbe71544fa330a940b471e44d370ae94aea7c28. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USCGH2363487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4ae3eea3beaaf6c42c58f364ecced62e23b02dc3131ea86d1ed64c540d95e4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USCGH2363488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868ae7baff6c5b2c43a0cd73a382138ee2eb89b9426aebb9ae48ab8c798d2c1f. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USCGH2363489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400537da94da7646a2da3445b5866eb76253d233ff3b7f1609904a779633d2f6. 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/USCGH2363490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109e62d6b6cb1ed75627b05cc2088e2fb901e7ac4d774dfc8a6046b84f7d4aa0. 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/USCGH2363491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26a8a98c66153838e68f6cdbd0907d10de7b2d54081e2e8a9ffdea40848bb39. 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/USCGH2363492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365979ff080eb766f53e8356d01c1733bc4b38d0c609db4d2e6a71362df27abd. 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/USMH92338387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71e6bc8f3ccbd7518ce01c69c8555e065d3ca8a6d53e6fd6dd16a32adec586c. 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/QZTPX2110259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f850b3ad683cd5dd700964c4a01773c9d82cee0390f6c0e69e44459e779ae8. 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/USHM22307861.