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 0x18613d152b85afa79e3a8708a807059a41ceb55ae0d5a4d60aee0df9b3e284f1. 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/8640c668-69e8-4325-85be-da81ff45e8ab.json and https://artists.proofprofile.net/proofs/artist/8640c668-69e8-4325-85be-da81ff45e8ab.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 0x60967a7d6711641b4b6f35b18b17ba4ef3eefc6b825c517ffa1f317ba24b7fb2. 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/GX3Q92502791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd9e5b78e23c2eb6429a3003551026582982eec720755faf87f4ad0fa1b641a. 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/GX3Q92502725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7b65aab6b0245bd4ee11f3a0a6d3784df1efeefe93873d8ea6ae17c0edf55e. 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/QZVEM1864582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecab083abe58d5b775f77d9f6e3bc4a146a85cf7f4df4612910988875d82f0ee. 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/QZVEM1864583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e707f466083d2b483a5aaedaae5423c5850011fee9f0f485f878afc794b332. 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/QZVEM1864584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf084690ee6e9e2718a309df6be4aff8af42d5114b9fc40ca4e542dcb5768e91d. 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/QZVEM1864585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834103873755d177a37c7b5cddb49cb4fd683470869ea181772bd1731a09a309. 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/QZVEM1864586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc51fe6b6f4ef07bc55a3cfe363c7f272995f9b95ffc82cde790c24fd129084. 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/QZVEM1864587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf071e2d6da23529b79b7191ec2c822c08dccc65e1058e19973fd051a4df0ff52. 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/QZVEM1864588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6744cab7c023b768bd8e2ab5f7d63b010270d24ec424a762fadd94d4a1661b. 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/QZVEM1864589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662015e77009a0deaee5a143297282dd2cf09e789142f85faeeb430dff5af00f. 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/QZVEM1864590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe01a064151f4648af4ecca80c132aedba5f883b15dc450d56415c039b99f6f. 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/QZVEM1864591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9635d5b4884119a047a9ed08cebe71e80caac75c9b4902f4cc115a11202e4588. 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/QZVEM1864592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040b5b4971ca0317ab572c4017a669e7d98e9bda2c9d414c3790b7c56128d442. 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/QZVEM1864593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37d175c89cc74829aca254039152a8e9b2f94777971ee79373f869020081813. 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/GX3Q92474817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070b23eb87a24344238f9c62be2899a08475eb4783ddc97e6d3c6e0858f5b963. 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/GX3Q92474818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef37692760fe91f6c891a79b08e809fe1f9bb3dbae561bf44ebfa2f5df25d53b. 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/GX3Q92474819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b00283f8dbacf6db2ba2d97820f038d4d39a052fba6169b0dfe43b06433380. 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/GX3Q92474820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea160c06533af4cd396569f81cfaca04a70ab0a6902b94beceb65e40d135b9a. 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/GX3Q92474821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee1a65474ce640475277922f0bebcef882a06d73c16591106386028ad3f4913. 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/GX3Q92474822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f7f57949052e8a16c59b7b18cea8969289c49dd2c6678485e8ef38455a109d. 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/GX3Q92474823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b25f50127771122acd590b188f3b12dc999702dab80990653480212f4267eab. 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/QZVEM2571475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b1f423b57a5e774a3ce0ccb4669b517b0312b4e41cd919f1676b6c2cb7589c. 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/QZVEM2556139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05233cf6f3153429f3ecb43e523b41d0f51a6df2e0859ac67f8719f1bbd87a59. 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/QZVEM2556140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688fb2f429883b135530007079979b73d84044db839ea6d051c67e637e7daff7. 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/QZVEM2564103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd7afe7f399cf31b8f90acac2e4815c1bb35a4caa75b0cfb16423cc3d8da531. 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/QZVEM2564104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3512f2e0f041dd9a41c1476b074cb04ba225bcec2d6752f1a568277c01cd3ca4. 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/QZVEM2564105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ddd7f14eba6ef938e42a7255f1ecd293235be9fc262d1618a8e2ab136e8205. 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/GX3Q92544042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb39e5cad1e79d30fcd519b8ca06535c36daea7dfec4474790b332dba8c6735. 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/UKXN22599106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb381d48c52dfdb413192949a2f94d59bf34442fba7b3a1414dff239cbe044ed4. 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/UKXN22570282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4094474259af79ab51aeae0e4898d627dbf1c80db3de927ccbf7b53b0154d8. 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/UKXN22525930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2aff62e0f12d801fa13a44cb7c43a51019c75017d538a7ad0fab99f6fea260. 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/QZVEM1866132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd668c991ec4bbaacc27711e4a3a991fd7b9473ee11c4a6bcb308ac054ba712b2. 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/QZLBC2428123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71311a65139feb6c56d1de6c43535c5f86812d17ec79f0ced1fb5cace98b3a61. 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/CA5KR2404472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc3c163da4ffa4a9a02162a57da9135ca47cc7d4d2aecdcd39e581ff1679621. 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/QZZ972310932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754365cecbfe4c1c38cec0cb5a27c9d684f18c3ae302eedb51a1c327af8a20c6. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZVEM2592374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db161c2263933f278b10dfcce2b48acc85538f5d15cd9f28ed9a2877a937133. 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/QZVEM2592375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841526be3a34853f727765186a9b096e704e248e713784d12f6376d2ecad19a1. 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/QZVEM2592376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd073ce09c518690df9162d8db6a5873c4f81095a8c08fee1b61359bbc97da2. 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/QZVEM2592370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdc355485d115840ea673780b7117272edfe85a632662998b488d8ba323e60b. 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/QZVEM2592371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3c9bb2ad4bc014cbc64181e2945d52882f9e32ec07f3ac6c7e81d5dc6e9abd. 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/QZVEM2592379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceffc8993899edf81abf6c076b2341615ba0ab52f2e0ba1c54bc05d965a6ec4f. 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/QZFYZ2508710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4821ca99904afa40bb790512976e475c5f1d8a25ce0388bfc81cdd3f00b7a98e. 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/QZNMZ2342372.