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 0x32574d7e6ee101c782bb643fa3e2b1fd7b49c476a7923b027c19d923057e3b9b. 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/e1ac1a33-4394-44ca-a9c0-4767ffae8293.json and https://artists.proofprofile.net/proofs/artist/e1ac1a33-4394-44ca-a9c0-4767ffae8293.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 0x8aa813abbfb31b5965a9633a09970dc327aba24ea2496575f73daa60f2cf445e. 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/QZES62131601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98453b6eb7cc1c247afedae7efc82b76502ae16207216ff5f9928b95b8a27f63. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QZHN42176193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e280421561f123a25d66f6864fa7e8d50a5e7eaf05888f28ea8373852f12905. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZHN42176194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa778e8b3b86be78a50762884ad5cd5a128134a8f9563b4504ef769f80080c42a. 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/QZHN32134600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e5e1a338b22d2bbe45be15acdfb557cb2aa1db97961c7fb0332048c00fd948. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZHN92129053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e5e1a338b22d2bbe45be15acdfb557cb2aa1db97961c7fb0332048c00fd948. 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/QZHN92129053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1276ad00f47a82a97b54c2a9972643e741769bcc2ef67cbe27504b92ae0e1e5c. 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/QM3DF2128838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255bf27647db94a33905df16d8c129055e6878d2e9b80b4a9e4ec7b12d85f2ba. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZPLR2104342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5619dffc67b71eaf0adea1275330dde3cea7ac0a27e08b79a9d1b4d907171bf. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZPLR2104343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434979502f5857c5cefc1da228bab54ce4ea556d1579ab04600c5a7f982d139c. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZPLR2104345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434979502f5857c5cefc1da228bab54ce4ea556d1579ab04600c5a7f982d139c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZPLR2104345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75fcd650cf3ab5a45377085468e9d34dab4bbba82ddfda7de0e7736e236440c. 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/QZN882247543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9e7a4b6a0c76416ea3d38f1a03ba0589d3064dc7a922c0cd8443e94d3b99a0. 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/UKZGC2201677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d4c7ab87125f388089facebb8a2f9943ffc106028d8cfa5735fba2ca241623. 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/UKZGC2201676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff12714e1c2691b8f3e341432ce2ed9b1a21a281bdc5aac665762db48cd25ea. 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/QZN882293644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12b9f1a91851893734f9ffaeef9d6cf249fe08fa9630731482492c8551817ce. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/USANG2225310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8802956694ba24e66685745b36ab35804f10b2922d556911bbc83bb6259e545. 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/UKZGC2203949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77bdf24bf3183feceaa27cfc5fa8551505a47d3640da205e5d21a1001347b2d. 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/UKZGC2203948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95c94b2b1fb2b6ac978575596fef1d30128a074cfee6cd479a27535e567db5a. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/UKZGC2300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77bdf24bf3183feceaa27cfc5fa8551505a47d3640da205e5d21a1001347b2d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/UKZGC2203948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c869c0cb396bbe9c372173ec63a0b2a12af25bd49de2897674781f738507d0. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/UKZGC2300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9283eccc037c9525c5d6ff6c02935946703a0b3db95cda072f2ea5d3599fbad. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/UKZGC2300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a68c339de4fd9896bf035b24412605dd0938eb99a0f864935a2c9072b4b9325. 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/UKZGC2300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb090d85d766890ed6266a878cf51b4478eb38c15b58f756762095ff7a646fdbf. 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/UKZGC2300998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4555ff334ef17867197d74994537d2d18f6cd5192e79b2b5f23c6cbdb8fe9723. 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/USANG2288747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4aea525a02550372ac54f00ff8fed77a8fe35f06d25033a3d401ff400d4473. 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/US3DF2414806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0140a7f9e8f3e01377a83404717a26327af9e1045d4aa5262ac9cd394a135db. 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/US3DF2447708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578cf64ee700be575149bf1175d240ae38c18d22491f1419b0f67a96fe6195e3. 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/UKZGC2411239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d73b8dd0983e65b74beb2db2bb8bec622f48df68356844cd3eb2fd8c63b0d1. 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/UKZGC2501816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1305cb86e5da8b8c9f07a92fc9cf045ce164fb273dbc3f8ba34e854efa5cbc. 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/US3DF2556703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb090d85d766890ed6266a878cf51b4478eb38c15b58f756762095ff7a646fdbf. 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/UKZGC2300998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75fcd650cf3ab5a45377085468e9d34dab4bbba82ddfda7de0e7736e236440c. 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/QZN882247543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff12714e1c2691b8f3e341432ce2ed9b1a21a281bdc5aac665762db48cd25ea. 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/QZN882293644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad73a751b93a3c60539dca953c47261c4ca596f26e404a0b68e54a817f2ae0c. 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/UKZGC2203423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfae649a3daa00dbbef56b98e758b4c9ac154292f079d5629c3ad82aae7f1f7. 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/USANG2286330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668f0a9e83e6dfb17a075b80689b3e30526e520993c2c2a2a76597dcae7b2cf1. 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/USANG2286332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9903eb01153cdabc7757bf1d6a6ec50c4a4ae4bb5579ec50f2280fd7c749f82. 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/USANG2286335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadf410d89c81a26e2f7bd98cbca649ab6cd3939b05db3258988dea45198784a. 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/USANG2286338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3923eaec375491e33b494a2266671ca60efd602e4f7351068fbb4371e30653f4. 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/USANG2286351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f0fce20e2c96f2d92c7f46d15f796404f8c20da524939e3e415e19b72c98ba. 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/USANG2286353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d79166ec46ecac14089225b7e4d6ed6f0a8c20a05dd21a713b47b446523b7b. 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/GX5MX2215375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0140a7f9e8f3e01377a83404717a26327af9e1045d4aa5262ac9cd394a135db. 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/US3DF2447708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfeb1b0bbab8f9fca2f9d295f5a8915fdb3294ca4a5aa1073258915cfd2d6628. 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/USANG2468731.