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 0xfa272525a31d129b8c2f8009ae6b42636aa202179755b8500063c210db0dc42f. 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/ea5054bf-31e2-461a-9d94-f6168c9630b6.json and https://artists.proofprofile.net/proofs/artist/ea5054bf-31e2-461a-9d94-f6168c9630b6.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 0x08f5efbbf66710963be1ed1dd4c8cb36cda6cb98819558f65dda8fd564e00373. 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/ES6109510107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddf03d90969f8c36cfb3b33f835056c2e7680a4bb7ce1e926aa316f8aa27f8f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES6109510108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f14b11544289016f843a884b44ea1ae40dc39e6003fdc01d98d8a8cf0dfbebf. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:52:08Z), 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/ES6109510101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afffc2ba9379bc67268efa7cb91033406ca77605d191884ed61ff1935ac12d0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:05:24Z), 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/ES6109510103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74ce8825d1452b7a878022ef1a0f0f7326252616931bfcdace5d2b42e55767f. 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/USA560524019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592ec553cc7dd53f944f517d5dcaefcf2e3bb5517618dacf9497ef4a94f82e61. 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/USA560524020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0538668896e6d9afdc500c20a1ca2014b32927a3369004dcfcb7327ab2b8851. 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/USA560524021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ad3a804f78d30272a8591fe5e1415aa2e0b3a754ea57fb1f5066364ba3d901. 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/USA560524022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bebe50919350073c95b0f93915f98de74f56dd00e3dcc0f88b38defea2b43eb. 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/USA560524023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec7505894dbde4bb7e51622c1fb9160098d517a2df78cb137b5b10ea7567c09. 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/USA560524024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d20b96b46b721b74e3f8a23289366ee1a05080026094893cc3b02dc5ad88a4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USA560524025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd2f89a7297006cace16649edc87690a6aa95d7f63307c909c56d3dba572e8f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USA560524027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fd7271426e4795a5ca7dbbe0de5f1542f857e0fec94b2fe8fe3d614cdb3033. 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/USA560524028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6998989012d2cf4514c551bf90a63048756ae5fa068284e06d227ed27db2e61. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USA560524029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea61e37c30856eda1b5b63a0e72ae2c4db51abfa915c6e70ec6dea0ce855928. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:29:27Z), 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/USA560524026.
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 0x43492eb6aff613444a134a3ad56b761574ddb7b001e11b54e08917f2044ebdfb. 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/USA560524030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c24d68444085b042f957080856271ff759dfb76bf2256c6a9a6e1509d7084b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:01:14Z), 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/ES5030000211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fde07ad885804343456cb066262f2cda90218b36e6fc7cad1f6a28ebf4adc9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ES5030000214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abacb3471b598e7ade4a13ab822fe6d09f50daa75d8ac8bc7816116df543213. 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/ES5030000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fdddc11803f07224f78882d87f3ed0f48a381629ac33690fa773a39c738e64. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/ES5030000218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae58f5f3cbd525d09a54d3176134ef73533c28fd82376e396697e17f2aa9ab9e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES5030000213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f967a52efc706e31ad5deb7c56d1f7d6176aed56f3bd01923214e9900ff2a6f. 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/ES5030200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0813fd1fa203de469e413ef06ab67b1b573dbaf71c62170ab2c8dda55fd65f97. 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/ES5030200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274728dc88f1dc3336adb3144334d41eb42a695730ac75ec32e1ef6d81e36940. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ES5030200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8600cff78eca0647c891063267ae777b2b50306368d823608467d3b3fd9d5f. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/ES5030200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22f45e726305d8d53b0927e62a419970b1d59e72cb6bc6cabdfed1b6775b363. 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/ES5030200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73fc71c84c1d6f95881da5fada7beacfc3fd19da753729882e1c8955a954b0e. 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/ES5030200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb09099a195f8c17c15c5badadc4e10a00a1c7a10dac2631fbd4039cb5f715c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ES6090500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa431f4ecd91446e488400369504102880a098e023d59f3d4fc8c35a6ac5e0053. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ES5120900406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d935c1bc7a51481f3773df1fc5ef201d297f307ef56308b94f3bba4d37a66b. 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/ES5120900407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9890c80229f19a7ea915f6e491b68fc079d753f09280a44a856bc7e52ec497b. 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/ES5120900408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12c90649680b3d8c07b9cdacb045792e962b1397ce1b94bce23f49523ac3585. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES5120900410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006609e369994e84a4f58529744f0b4a3eadde41cf3b42a02eef9af7c410429b. 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/ES5120900411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74714805f5191d5d34ba8a504848e6fb7ea5b4328d7ed63f56973544b37594c. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:44:32Z), 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/ES6101822702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17dd5cd9baf9e0d7b63c391d28849f0a3a3d0e8babd75157fa5f1f76588b329. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/ES6101822709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9854512e1a78a6c4a64beb9048ffd21fb14f26721f636bf183a9bd1265f871e8. 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/ES6101822710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c6c0a340f7111797414c492dac356f866d61b0cf3b3f83ccc1daa737ab47fb. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:19:40Z), 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/ES1122493501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f860763887779a27950ea3ab19f2808b69b818900ef43c0e338513302380a3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES1122493502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abacb3471b598e7ade4a13ab822fe6d09f50daa75d8ac8bc7816116df543213. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5030000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abacb3471b598e7ade4a13ab822fe6d09f50daa75d8ac8bc7816116df543213. 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/ES5030000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7675d93f5e4bc1a8c643ea1fd227009e6a4bd062085947a9f14dbc4d86d3c02. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES5030200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78ef5ac4aa7ef583b2c8cf46dbe96b8d0edaa3f8bf5824ddf207c43de20aea9. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/ES5030000210.