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 0x55b7aaefb40589e1ae9b778224197afce50c359576aa4ef64a869c765fbb24b3. 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/9b96a289-e777-4870-8e52-9f3da049f505.json and https://artists.proofprofile.net/proofs/artist/9b96a289-e777-4870-8e52-9f3da049f505.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 0x85be06e56f5629b9e09713a74820c8cc47bc34b4912e8048e60ec8fb01b5b0de. 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/QZNWR2133504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b2aeb291b781eebaf328d00d542977c0f3894b1d44a844658d8c77d59142a3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNWR2133505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac8e356d4d426c827750cf070b7b0e29765af4a5a304960a88b3b7bbea2280f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNWR2133506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532844d0d30b93e39ea7bd6c9a30d5fbd0c636b3786fd157904cc72621f591c2. 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/QZNWR2133511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e9594322de27a1053e28b5a37f657c1bb4d08030cd4de852dfcf4e8d8d2331. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZNWR2133512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc209e37936f6100fb80ab1ac997498277e74752669c86dbbf9599141c3455e04. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZNWR2133514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453cc244e7956151a4933330189f55c6265929ab2b75dbbe773edd1ce125ae25. 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/QZNWR2133465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115499e5b6f2522e2cb2b9bc82e08396b16e77eda4f74917e57037acd54eb10b. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZNWR2133466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea643991b11f30498b9c31d4f1697620abc63994ba935f81bd845d86dd5adc4. 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/QZNWR2133467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037765d4d194b06563eb0357b51596191362529467b983c7472862f63a58a66c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:38:04Z), 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/QZNWR2133471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88949c025f8d2de913a73e471fc6ce5e674ed4ba9248df2b59b7b137359e8e35. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:05:55Z), 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/QZNWR2133472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec24588274a016f2553b1a7ee2762185c76ffb339eea02706cbfbed3821d799f. 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/QZNWR2133476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d29630cb27d61067de03c6c89c77fc921a9193a43cf8cb0ee861fea9ae1b08. 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/QZNWR2190406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb280a00c90e39810c9b14b268bbcd6cb25e114deb676707ed353ab367419afdf. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZFZ72218846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b57c0dca237307caa34c6c0e64ab3d1fbe8f9e5565399e1717e97a126aa6dd1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZFZ72218851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe324a3b3aa5944640c1d4a1ea0a87c10547b1c6012bd1132796d309787737a2. 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/QZFZ72218853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845e9fc3ad9bdcec002435baef95d48608c74c08a896030cee4339f067b1f289. 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/QZMEQ2222314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398bc4234975c2541ce840d81511ca8803844aee4e5fe72d97aadcc0539f262f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:15:05Z), 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/QZFZ72360410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231fda64c0581654fe5393332d06d65d2ea54fdf7e00ab4cd064dfc91b7aa689. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFZ72360419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e22b96de298dd386647f25d558d22374a3cf6f734aa2a275a81608e930ae9ac. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZRP42340894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc2d7e7712f9eadbce2ee2ee9a418b77cd347f8528c236b4bc37ea545806663. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZRP42340895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dbe46fdfddb101f8817e71dca0909ff43b79ded76e7a50e688c762932d35e8. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:37:52Z), 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/QZRP42340899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502e0294d50e1e0d9a8d41241a7f1be145feaf8ee9c429a8205d8509d8445c1f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:45:49Z), 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/QZRP42340900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775df3e6b9bff3a0caadb9e943d3736d8ee4d266619d9dba4dd71f68c900c798. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:20:51Z), 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/QZRP42340901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b02ef477c29db127c08cd4dc1106fadb062d32ac2a8dfba8d82052d007cf860. 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/QZRP42340902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3244deed5084cb2662a7d4cfc3bdaf25edec13683e6823b1954fd49fa05ba5fb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWQ2436115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d932803814db1544cfe61780c1a360faca56eb93098628569653feb7baecf9. 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/QZNWQ2436116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa23cb31f3948c7d586898294d97635949ed275d448aa8f2a3d3283dd65c625f. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:08:09Z), 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/QZNWQ2436118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e1b57cb17c0df1587a8fb06f2f5c288998d95e09fcc560e24eca9e9125a089. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZNWQ2436122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5881ac9d93ed25034d27d13aee585aa1a137b995b09f5829c70369b3418686c1. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:07:28Z), 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/QZNWQ2436123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985f25ce5731220710df8472745eca59ead23c874802d9ce6873aca546318cce. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:51:48Z), 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/QZNWQ2436124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e89bcdc2382f59641b96f6cc7b72730e250048871fc8a89d8914fc599f3448. 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/QZRP52451921.
The Vertical Expression Of Horizontal Desire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1242d99d2b89ef2981af995d8c8d60283926963b97df00f8ffd83e6cb1e2a26. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZZ762466654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e08a2e84f6f0cd3ead0f8fc134655febfd4d97dce895950339415e2e0622bad. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:01:52Z), 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/QZTBD2431632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb812e2ba3afe8cef8a993429c296152aadf7f05915b5ba069ecf8675669d48ee. 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/QZZ762466656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f707a0fea57c70d2edd181ceb16856c1e87521228e07bd24b31d0e5e82fecae. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZZ762466657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84f0bcacf316799d490ed3129b6f099073d234a28aef296898fb386c3f07c47. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:34:29Z), 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/QZZ762466658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850be65920111a3281d5439000e301199abca670928d41f8b0cd24a8bb1705ff. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZZ762466659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa9c4399d2c9941cc4a3a29731bf5c5d22de58446dc10bf67aaa3b7861230ca. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:31:20Z), 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/QZZ762466660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a876ae207c6d4ade9a94e79020953dd2d339eaffdab07150ecdf5c4b67b4d6f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZZ762466661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616e4c22eb12a2cc21d2f4018c7af2748bc537f2a658a9b678d3831013094c64. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZZ762466662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404c767aa306ab6b06b4722f3c95a5b31fa1f2e00cfc6351955c8a1b64fb2d4f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:41:40Z), 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/QZZ7P2414574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddafa92ecc0bb250d08803337f8e7d9d59281a2f89057ff8ffab1dc3e221fa3. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/QZFZ42594693.