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 0x294d14bb1a0e15f2b45fe5d9cdebf2efad338cd002559037e1804ccf9cc910e9. Chain 2 (Bitcoin): anchored in block 953681 (2026-06-14T19:31:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63fff750-e970-4bbe-9121-b9c8206acaaa.json and https://artists.proofprofile.net/proofs/artist/63fff750-e970-4bbe-9121-b9c8206acaaa.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 0xe97253c999152ea78c4a6d2dd31a02dc7de34ae0400693512392c589cfb75c1c. 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/US7VG2313808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae9f98aff8414072c3b876def147eee62a30b9e7a4d69261e1a8b7f74806d47. 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/USDY42213347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc870e5334bd2a77a13f515df13fb5d84260ae173e6d707a515c518f255ea35a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USDY42213352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d436ee142b8ad14481a551d1f99be8be7d9ef973b54e2eca073ed6c1ea6f62. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USHM92014421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27fdf4cfbb4b67fb5f16dc808f57ceba400614d23f2f3c01dd45c9fc6ee5386. 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/USHM92014423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6c18c35d10856034d654476686195444b95bcacdb9e1f61d389c690e6a5297. 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/USCGH2065298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e64fd3b5a121a6f55c6955c6276926f85223c69810b25cf15e240f48bb8bc80. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/USCGH2065299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090678911094eede25684a55b2579ed2bdd66b41a34ef2ae3387cd39fde9a9ce. 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/USCGH2065300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7641ca174b59acd5be5b0ac01e4af2b96775800a0fc77bedd20371df0423e7. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USCGH2065301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6836dd3b127607dd0e48b935a011e38311ac085ea5eed38a3c3ed7fc636bf832. 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/USCGH2065302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79f7ca723763502e208142866d532dc93ebba23a7463ef7036dd36ad625b041. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USCGH2065303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6440b486c9ccf6fb3787fcf5f8cad0ba8309f5bcabb8c3f56188ddb0d8eff359. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USCGH2065304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ea203bdaf9cebd40db2adb0229b6ea940f35c4535b79be4d3a078bb9899ac3. 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/USCGH2065305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346cd097c5a614318167dfcf38b1b438032c51e3f55beaaaaaf3d7cbf2669d2f. 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/USCGH2065306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bd52c9f69e102ca97febe8c300c9b85725cb1c6e0cf60c726789aaccf8aeeb. 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/USCGH2065307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8a94403e6b14f8c421b91f3d06f9e64710a227a4a5694dc14777ca7d425bee. 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/USCGH2065308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf87cc5dc51504fab53e2bfa5885644e5e346a6d36cbeda3dd41f47d695ad00f. 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/USCGH2065309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc402090be003fc74579b9e1345f84717ff2d118eab3c36644d1cc76d3ca2a1. 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/USCGH2065310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc54f74a414ceec7dace4f4c296da6b8df7521e0258a7c3c3e714842559a029. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USCGH2065311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d3bd5476a44278b68e2c619063b25611151e8418d3dc887cdb21b84c667fc0. 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/QZK6J2269058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2ef00822809d9c36ab00b7c156c7b5d6cfa0a2edc492215af824754e7eaf2d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZNWR2103137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0c97d694bc47caac423d08b958b627f94add3e5b0e56d0b567be402440e667. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZNWR2103140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78079e6fad50958dba47ea23d7ae76acd46073d54aea1ed0592a27f24fd5c0b. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/QZES92062139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53580d78187b3e697b39cf272349512ca9fd0abafafb7246ba9acbc74e361740. 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/QZZ7T2412354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268af66aaa0d68081ccebb2d24207ca237aa6121d030b038213f3f144c4d7469. 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/QZNWZ2135559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca4c75ebb904c8ac9bee0b7e4e00c1ddebb299b5443a4534e01ceff68671fab. 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/USDHM1819091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5146e52b8c30dc55128acf296bea38d29ef7e4413ef6a47a7fc4e00a9bc28b. 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/TCAIW2457803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c0030b20eef063e78a38c917d23dc94e27bee80d005c851a6170207891fef0. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/TCAIW2457835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf574c83077e29fb26ed8931c8e651805f04a51f230b4ab2371ac35d72bc66563. 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/TCAIW2457877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d8cf5e58138592a756dcf37f35c97c5ea9c2a00426dd7a78c097c2148067e3. 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/TCAIX2457909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a432e70ef86149684f8ff2377d89748abedae1dd2ba205f658dad48d6ac6ca. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/TCAIW2457927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18330e5066d6043e14e34da73d6d6b480616d866abdf863c1f9b025eebd47a85. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAIW2458009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610fe6499b89aa423f211c668aa9f25acbf6d4f4d346db3e4c12b167f568050c. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/TCAIW2458072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3b768f2831b2acf4c82011a5327f1c959b6ac112df0bbb2609deb9f11634e9. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TCAIW2458114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa927dd8962d10241c60f2af1669fa2c2756d7b4d3c39b7fbfe13d3720111f995. 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/TCAIW2458150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7083ae82d0028f8f694700b7107e9f3e3d91aa7cbb7b6ab749c8244ea05ea7. 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/TCAIW2458225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44d573410a697c810a668f6a13bcb93ee398e7ab5b716dfe60a72015c8966d5. 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/TCAIW2458307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe107e19d406da2e6f1970447bea873e24cafd79f75019d6a66852a80654c7c5a. 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/QZFZ42548135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99aa7056cbc829af4ce96a363b55cf150f9a7c07b483d67f614136c387f44222. 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/QZK6M2564078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcb03161e22f745227ba227a5b1b727ef869fa276de2c86a57b86f8b53f1dec. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZBRF1820673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf4d948cad3c935e8168b71991f50f586bbc956b9cc07e042994752cdd22191. 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/QZBRF1820674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e53d2a86c4d71680401fed84560ef2174a20b34ccbffc09de3767d4fe5f238. 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/QZBRF1820680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866301ee345783b041e6c0fd50a99d90fa259ffbd392b84010cdb9f1ad51784d. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QZBRF1820690.