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 0x808003884c4de830357896aa635516b631770901afd8552d17a14db79f71cefd. 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/382be588-c106-4c28-bd38-4d91c48d8b06.json and https://artists.proofprofile.net/proofs/artist/382be588-c106-4c28-bd38-4d91c48d8b06.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 0x00d1a91770ac02a89aae6e0c7d79a1a2b2a8a9833d52adf72d6142822e22107f. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/TCACY1763767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97311e5a00da3a9a04bef1a0a527dd6787c931ba59e7e79a3ee96671a14744ff. 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/TCACY1763770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bc603f2df71135bd91ba5a15e708c9257baabbe354e797e660d1665df7d231. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6F2121270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a16ce1f66015cf47536519e8a1d5d3e4c7e81e7fc823a7be35b00f800a93444. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA41889457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9b2281833f3f65e232d085520ca06b786ad5485dc936285d24ffecacf1ffcd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZDA41889460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53fc9b2f9ce838351491ec63f48a6e4d6c999db0cb09201024a1cc4a100e429. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZDA41889461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ae53a74540e66f29accc94551387164174bc40a7e53239d9ae241d8daeb20f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZDA41889463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129961b3ab6b8a740477f947caf3715ab6e996fd9432392f1ee0a3c2479d9a0e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZDA41889464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174055dc06131dd95f836abe3a25cfdf238539c5269c8184408b9af165f388a9. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZES91837022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8012da583b5ccd639dd48301746c81b424e4eb7eebb27e1348c55e20f5722701. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZES91837023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5edfecbe8f75b6ca0e4cc93d2232a472115e6d117939cef2418b11afc682e57. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZES91837024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0784d710c4275db7a89800c3c6cfb5c9c436fe9aaa1675136e10920044d5346. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QZHNB1978679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72c92aa595a25f7ccc9983ac7cd55493769fb05192ea5ad06c5c62efe678f8d. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZHNB1978680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0865836e242c14de7ee9f290dac6bb2c435ab8bddb9ae82c66c4edc082e5346d. 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/QZHN81922250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f8d0adefdc6384ec22cdeaa82c13f380531ccf35ab91f93495288e7b7c04bd. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZHNB1955535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e1049a22512245f506dd9d9b59d68b595ad4ec953725ef0e867b97ab1bc5de. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN72015103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7267d033376f38cb76b611f438b6510d74edd082da1bd2e2bfdd33b2e25f2600. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZHN72015109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6952fbbcf767712b5d38e9a8ca1f885e933da00dcf8749d0ed0873f10decc2a1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN72015110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a1b1b2adf1747971bba2e38851227853794eb1f41f743a64e5e6ab6cdf0b2e. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZK6M2142311.
Nothing Matters (Re23MiX 2.1 Comprehensive Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4ca8f0b5509ff74022d9c3e18482988c216d581c294db20569c3e024bc30ca. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZTAS2174818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13955a02d9794a1fa9d5f2fa3e8e99ac32f1d9e38c915ff69440c09e3de0b23. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZTAT2170708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf65e3d401116c159e70f6135a242fb5b560ef5fcf53f34d0067cb2d431320c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFZ42205032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1290356de14061c4d6ae77742ce28e7305ac3b4976b71600b84391b402822c29. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZFZ42205034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3599a8894fdb86c9401f4aca8faa4f822f51808cdfdb29176101abce24da614. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZES92236852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163ef715d08916d1ab205af548c0aa8149144d7eccf11c2a4318da6901d18cfb. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZES92236853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeede88680cf9c1914b0a720a0ba4ff75a84b79e396b1383bd5bd22869bb3602c. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/QZES92236856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cda871646f298b08bfd5a153a36840db23a85a2af3ffbce42894eb1a8cb40e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZPLR2264391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eab55bdf46cc9a36840c1f5aba239f89493e019e713dab8ef55297fc9c483b5. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZTB72293124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5018a1a0be0f8a60dc96d07a9367039293f4aa619108407f8396fd04c87adb4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZES82383764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1d6a13d2e47b53c4b0d9381342f906d70974fbfca53fe1f6258d1c99f85c03. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZHN72315995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d85e300852bae3adf6f7b02c43ff5ed04d70c864dd78347f80af02e412c207. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN72316003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a732c4503688b68e7f14fc125221990f3e3932040cea0a9dd331707c5b013db. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZK6Q2457900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa751b9c99d9d9fd82354edc5c8696b7c06646bbbe797c95a587aecb928cc2bde. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZHNC2470622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e151d72c1a0436b8177f0215b8a23d728beeec8055e379764f1e3a3a7269b5. 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/QZTB62468183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd192f0c3403b88c5c5c63861e126833b7e89c6dd8d424899f78f7b7d6d967e. 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/QZWFF2425515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb93c388c480825a8556f7532d21e860db02475aaa97e10a168f21da5f9eac9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFF2425516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e151d72c1a0436b8177f0215b8a23d728beeec8055e379764f1e3a3a7269b5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTB62468183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded11e1fe0a40ac97e01412d43489ac1ee8d2e6554f75098364063689f9196a5. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZTB62479624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ba1079117961aba68ba7b97d51ced6cd17f1b20fdd94f9fe19e926b095438d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZWFF2425517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa340071562017407cbe19d174812d5cc713cc3d75357bdd7a55ab59561a7dd51. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZTB72424887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc237de47bf15cc13c53393b1ce233c409248b826d68fd6e8f456b94fe0e8c8c9. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/QZWFF2425518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fb82113fa15a846931d2de9745389666d24545b6e8b6c03746a6ce3cb746e5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWFF2425519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b211833d94bcf70518fd7c5d588154735894011c496d56e7f72ca1b6d147ad. 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/QZNWR2096796.