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 0x032db93303cf1129c4d5f7cbf5a7708e3151005474711f43f484c1d0d7b9be3e. 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/75f98990-33ea-4213-83a4-86a05f9c8744.json and https://artists.proofprofile.net/proofs/artist/75f98990-33ea-4213-83a4-86a05f9c8744.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 0xfaf0fda0a8bc62321ab369a85927a37e6e1afed1215dd6ea6ed3d67d67233887. 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/QM6DC1694338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1ed757c2c92e3eed29bb6bcda5781e371b1b89bc828913c0985fe4bff1acc5. 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/QM6DC1694352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e3422950e0d8e457d1afeba878b534b703bc16c3447a2f9fc0a9b0f9ccfab0. 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/QM6DC1694353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bf890fe6c232f2e3d6cf55bc5f4a81434b991f2fa817326f3afcd083f841e7. 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/QM6DC1694354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05749d6eb199e4fce53a95a744fd5082f0d3a027f6ec8627f6507a945b3a2627. 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/QM6DC1694355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda285300d5592a205701fe60de87618854fc9a614c132f27e88c33bc0920b132. 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/QM6DC1694356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262b80edadd33c3341720f97847dc89a36720c0500ab542cc4191ae4bea4a28c. 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/QM6DC1547415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2844a4aa0fb2fbc50274d86a071310f734d6014ffaf403647447c44cfe4138. 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/QM6DC1547417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa5c3474b98c6ee34be646a3431e2a4eba69e24ec187fd21c8c38e49114b285. 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/QM6DC1547418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68e29267a27a33f8e6e748835153b64e632e8ea23ae902e5227afeb32ea105c. 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/QM6DC1547419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a98f7092e073c076bc9429d82ad076875070f1dfbdb59d48939878ddb876b04. 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/QM6DC1547420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc77e5a870a45fbf96df1bd4a94a68e7e1e19d8bba03bdc768ad8cf1e86b2bd. 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/QM6DC1547421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2e5d34a26499e7e3e012671a875dbff874afe70eebca6b73a86ed4244e12cb. 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/QM6DC1547422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec454d8f7d9b888ee75d1f71f8d81de6dfb2386a7bfd079e65d99b996fe88cb8. 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/QM6DC1547423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c84c092fc21e187fbd785be1a591439c1814c6c385253c5b0546c6641b4f30c. 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/QM6DC1547424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cec6116ae529acd53950ff6a73775082854e2ecb214f0d2e6b723ad3a76786. 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/QM6DC1550431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097986c013b135797c63a973b91cfd6bc7ec5064c03fc68ecd2fb9e34d63a658. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:43:46Z), 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/QM6DC1550434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f142ce4f5eea409400156f60bdac0dc3455502c6b418c2957fe0235c6ac59f. 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/QM6DC1550435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659597219f6dcf2346418ede582c9dcf612ace6200e3948c80f56f65179da9ac. 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/MXF147800168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84209d6b651601c073a0bdf1915331b4357cd4d473fa50f149e17eba9f753653. 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/MXF147400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa674c700fd6fccdecf0351305a8be70d25beecc644bb3778cb9df9802531012b. 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/MXF147500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb92a5a4d985d207be50f7e13138a01c7232849d17612e38346be4949d6fe344. 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/MXF147700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd01ddb20f98c7c5227d6ced3e84259a382f2af3c626f82443c30f9ac231ca7. 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/MXF147800169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf54d25ca4869b61fcac12be0c796256314055cf86a2e35e86590f11c965c1e5. 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/MXF147400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb387462aa5cbd8a555066d47bb3677d0414198a06924f26f5932d5c5c7c29f28. 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/MXF148100130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa674c700fd6fccdecf0351305a8be70d25beecc644bb3778cb9df9802531012b. 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/MXF147500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6812316574d34a213de29a08a968a5261bf935cbcf767be81a3227bc12526b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:44:04Z), 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/MXF017800389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb92a5a4d985d207be50f7e13138a01c7232849d17612e38346be4949d6fe344. 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/MXF147700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763ca8de0763d9a254071754846a93ff00de35ed74836b1caa070fcc672b2ead. 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/MXF018501750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414741099b8085089132659141a2c0503d99681e9582bf6d6be02c9bd3bbd90d. 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/MXF017400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4977e44e37b22cec5ee2b21240273a89c6c0d3e6a9c9a9e488f6ba0f1162ad. 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/MXF147400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeadd906d791612d17ee0e02dd2f669b926cf2bbb457d4e2bc6c40c24196b8c7. 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/MXF017500176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6373c2f00b74fe8dcf59a6926994e739c139962fcf6e4d45e8800ec917a7376. 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/MXF018501749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb387462aa5cbd8a555066d47bb3677d0414198a06924f26f5932d5c5c7c29f28. 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/MXF148100130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4913d94ddf789e4891484ae2e4266bb7ed64b6588c9b14c9d17c422f1f51ad4. 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/MXF147400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffb6cd58cb96c535b2f1182059ca9564d42a6bccb74445ce80af01b2fa8a43c. 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/MXF147400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c2bcdd58478b60abff80b92afaafb115943b76bed2bb45674d696ef9cd1e8f. 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/MXF018300532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a123dd8dff96283fafd20898876a156e53f5502bf6c7df75dac8d7ba505c37a. 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/MXF017400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38ad6eb943fef6cc5fec0fd43932276541c2d199055d272d4cc7d7506078ebe. 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/MXF018300533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c52e6dc1b08d06dc1b8dde01f8654f6b469be1f5c9985497f3749a9f38e7fa. 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/MXF018300538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fbdedfe5db09d021adf64efd05f70d285543104034faaa046cb0e1b16734a8. 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/MXF147400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96da71d18324e74343d20092326644149e9673629573b9a2f8a2f5425f0b1961. 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/MXF148100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659597219f6dcf2346418ede582c9dcf612ace6200e3948c80f56f65179da9ac. 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/MXF147800168.