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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd222c13823a27c4363dcf5c3926907e9fce6b6a1594f2b2a262061141d164808. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5789a441-1f0d-47cd-a62e-934015816d45.json and https://artists.proofprofile.net/proofs/artist/5789a441-1f0d-47cd-a62e-934015816d45.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b7004ff34c3d17ff074d15a2e0a4bd753e5aeaaba1552307c5cec7376d1007. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCADR1891725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa37de2a273704dcb4983ea10e148b6ce79d6fa9128208d1a0009f1c17ccddc8. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZSYP2330262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e62bcb1a07dbb7abac8a4ffffb917db0bbcab121862990f5684c7dc83564c7d. 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/QZSYP2380480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1c03e5027181abef9fdfa7928d041a3a55df9386a49f081910ddbe1b6362f5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:57:04Z), 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/QZSYP2330009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b9845f3063dda2cdff49aa8acb40e8ec141611f99d60c23ab54a166a67003b. 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/QZTLA2285381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd00db8ab077dd5361ea02dcb18530cfc8d9274c3a14c8f9843cf1c381b1cd18. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZQAY2245779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef4903f40bd1b1ca82f92b5598b4521505f61f3a21e078f8049f7feeed98841. 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/QZK6H2351338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2a318177c2aec4cc501521742c1f7e0b8b0ccc5acd50af34e21041fbac2c65. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6H2351340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08d29bfa143e2a128794cb46482a577c7302ad234eb1169962317e29862da37. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZK6H2351342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1510b25e3b75f4b53ddcb731a889fb766181250143d1c2e40cb4e52f10cb58. 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/QZK6H2351344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c7b42ad3ee611345b71349b1d590c2daea231336037f71d079f8718a9f2800. 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/QZK6H2351345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1576f715267c4fc7c91b26fc62a049d08d91d06d5ce446cd59ed05668369272a. 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/QZK6H2351346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980c7bf00433d671b49d8607616e02dc4f32949f6d4e4a6122505bc0e5a6551c. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZK6H2351339.
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 0x6534c75de67e87e2b0ab8baf711b46a146be073da1c6ac943a7017a93f0aad8e. 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/QZK6H2351341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9316d44db6fd831942027b1e4bafd80e309c7faa55168ad767312444cdb5fe9c. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZK6H2351343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec79326fd6cbd8bc44077287dc24621a76b94ab83af275dd3ff02d58a68241b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZK6H2351347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2aa32209c95cd316b74057c898d83d6a30c974b2e8c2f4ccee05da990ec708e. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZQAY2457393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c376b3428e30b3a0c42c66c561294d2fcdb9c7e4b3e58bb0e72bf1467a5d47. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZQAY2479680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfda0d4f0bf26bd9d9441d9e410fc8a4745026a5705c878f067f8827d09416f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZQAY2411700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2633a1841e86336e1d8469b7a0dfd7dfd4231f61da4391e36457a34e3bbd9e0. 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/QZSYP2454555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1ac303f6dca11681938841034b5efcb14de37f0543ea8f919d95920fa04016. 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/QZS7J2461622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847e60172cd3ff314968d361a722d3a6341fe5e632d9ab17580325f755cc71e9. 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/QZS7J2402358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a8e0bc28d03c22284b9ae6f5ea4a31476a5331fd00202545ec121f8b959e55. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZSYP2413276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c579c0d7ddc5fb2f97cc96618e54f488648f232f733aaf15b5661f2f928aa4a. 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/QZS7J2468715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf4460ddef909e0536b8dc50a62d7a7e7162747b4a6a7213ab702061b2def32. 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/QZTLA2534133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb4a1fc6877abd7fde589097c2d8239cf90b18c601a44fa1a70afe7d37a723d. 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/QZQAY2509712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51bf53950121e7cb0018078c89edce32b9d637a005dbee55a5c9322216b6ed2. 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/QZQAY2570551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5f9832a3010a701c4f06ae5131ee9ab613e37f3d211a41c8e719cfd7a0c536. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:30:19Z), 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/QZTLA2553291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44287738577bd6c404ded1d28ad4aa58b89e5eb29c829235c65849e2171a40db. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:53Z), 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/QZTLA2525316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107dfa9ac3e0fa844c8b1145b5a6bd1d5762ac68a30c9ce6d2750906a8b7ce7a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZTLA2512905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6c6d3b569bb9098c9b433ec0140ee953f00132e48b22ad9c37f4523bd560f8. 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/QZS7J2587045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0565c40fb354a07c1d8e6575f376c37e39937ef3627427afc63da6fbc26babb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZQAY2532824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5974357b48e61ba50387d9d7cf6801c19f828bbb8dcba5337f760f6ea85006. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTLA2554887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb906117b42350b9666542edac203f5eeb2e4f5bc135024bbb0a7932dc9273850. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:08:58Z), 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/QZQAY2590725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6c90a348de7df878c5a03ace17dca133273a9e40085c67f55f8e48b8b95aec. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZQAY2502653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11802670424596d17d5ee0f22c0cffc39a55891c3aded3a144db411d2cc899df. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZQAY2570688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c9046d41d618fb7f04dc3d7adc2d0bf408da13db19259775ba18970aafa11d. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZQAY2528017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad356c05a8b760fead9fadab8391127554b0d94f2c7cbd4853322f3142b17b0. 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/QZTBA2513548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137730d4169304d599d3423612e7f88d41b73ce685e03b0f4e2cfbf13e1faf40. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZZ7U2512184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c84e969aa556597970cf3cf3db045af121f9a639786d2b207611fb5460cbd62. 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/QZS7J2527866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa910ea4146f98e400fcf0abe84445e5c3afc433429df3ec655a9d6a3e73ca02. 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/QZNJX2389755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e4a048f85ba3a3ac059ee3c8b380177546aa1db6f07c7e4f42c73de3dc81c6. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/QZTBD2305192.