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 0x6a43cfcc0e5073c95319637acd1348dc216647278bbcd96270e73feecd5e181f. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67a8b8bc-1287-4cbe-824a-46b940daf42e.json and https://artists.proofprofile.net/proofs/artist/67a8b8bc-1287-4cbe-824a-46b940daf42e.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 0xe35ab0f535278d51f3c9a080debbba8082af1c25a65dd296533d4e59bbd14308. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES7311100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fd7a589d77353d0ec774800941d769ea79ad381a4a607ff31898f29d63243a. 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/ES7311100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347d4919b926a2a482d53fbf1ea05ca8cccfcfd569a9e5be6a29541600c0d79b. 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/ES7311100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc755dc5e0a7f5eafb2ea55c85c8db9e35770b731d2033171f9007ccee3687067. 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/ES7311100054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afd6ce05163b9cd7d21fab3d89237c6467f3067bd07f7d1715e7809c611510c. 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/ES7311100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2528b5a6bdb9bb2c9da0422bf5bc104d3073c6609b461973025143a80abf6cf0. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:00:26Z), 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/ES7311100048.
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 0xfc4f11f2b8acf05569fead5321d7e9f16a7ce33886fc064bc786a966da88e0b0. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES7311100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe951582ee82113a9e30350d8a4ef6771071d59556e47c4e7d98cb4fd30066280. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES7311100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e3e6d7d52d0411d88d0b91b5c8a04e13865f24eb2374cc03b2612e6d93e231. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ES7311100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21db86669682a41e3435b1ab3580599588d5a3faaccb66a0ad11a5f648e2d628. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/ES7311100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f943a53aa961d86133a8670e3ae866150730a0060284a0a0a44a6363229d269. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/ES7311100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643154a4034858a09429e3ae52785307aa10a94abd84399896291d7e80619a4f. 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/ES7310800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00017e329c4e243dc7e433bbae30e911703df6b43c0f3c38b24ff36a64e02a7. 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/ES7310800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf23561682ac1ed31372f0c70b9de6cc1532a45bbdac4a0c98ba103d5e0ec6a9. 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/ES7310800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad3f08b228ac62e9f4e7f0f32a0272dc6e500b9cba6c8bd498976449c82d303. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES7310800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5dc5e280a1229cc8f0e5957e0f54224e1fa6540317f2343808a1ad48fee049. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES7310800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc721e4de1db42e2bff33a7dc679cca83e5b970ad4f5d821cd5ed917dea1c26c4. 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/ES7310800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8880a2cb0a1ec1270e01e5291834ce299d3d534761ccdcebde26aa587c80389. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ES7310800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f0d683dcec1725ba2d8b229dc42a4c9e0be571b53163e6350ee03e15eac7be. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ES7310800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe4b6d93ff274b688adfd97ae0a86e620ae9c10cded9d202818f1c304bc779b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ES7310800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0550a23c97329f18eff0c66a54645a10c71ec53751c4d29b1bbdf6e4876907. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES7310800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d4142834cce307fdb4b564e80dbc2a6c1cf819605ad5bd4ab839eab30bb33b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ES7310800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13e27ceb50056873301284b291b1c33e00332eb3e297afa085d65b26151c035. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ES7310800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358ea293ea09acafd52bb4c047df994220726899e7e814298de85054cb337b2c. 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/ES7310400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3447251ddacbf6a7ef39d073e90c71e5cadf10b45218609c799ae76ebc27ea. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES7310400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf2da78601adffdaac75aa9c6f7f05f2783bec1f130cf213c42d79b33624978. 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/ES7310400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976d440e213dc8de05fef5e9bad2310af54505ee79e380a3a02590d2bd12c2d3. 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/ES7310400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8071971409cc7032c2b0eec1c1c825247e81504caf3a3bc4a418e6bf4fb1df94. 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/ES7310400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb43cdcabe04ae9162f2a65d6f77185da1682adf7e71c5e0350513ecf427c7e. 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/ES7310400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b3a8d07516f8b144c7f14da0c1474d10eae269c65581aa35b7fdbe339ec76c. 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/ES7310400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971d92ca7d78624534b0b3a5e66d4bb5ea9e6107c23b563da55ea5a0c80cc9a0. 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/ES7310400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fca40df2bab4843322a4bc076a1f47a051e985f58ec76f03a2a2c013fc66825. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/ES7310400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caef9a2e12e622527b97dce115bf2960028a7fd7941704d0b554d103b707ab7. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ES7310400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b32ccca81db5f2833caf5649364cc8dfdd7748378598a5545ceb198506425f4. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ES7310400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d998424b9f188c00323d7d34ef3b758608a7dc6ab4432a21ee5f80db250667f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ES7310400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1932d954e5cc39bab00b2df6e44558258a1ce13a61d6389af6b584b90356402. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ES7310400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f21e2b37afcd96de5153064680916510c2651e1769abd75f144a3daa92e83d. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ES7310400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882f18245a5589810297b517a2585190f5a15c723273df778d58ea4176dec5e8. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/ES7310400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc597459a6a868367fa83d6a64e5563e981064f39b2129c114c33c0cb6ff1b775. 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/DEZC62328622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ee453816ba666cd64cb586abaa1cc3fb3c2236ecd8361ef706cade54e6e929. 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/DEZC62328625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb68a5bc3c361c3998e6f50400e61de7b4adb8f7a71cf3be906a29f921311b9. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEZC62328629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5775ebef9a2543972fc34a5404b5a477d920b8d24e73192c5b0da8ffb058f97c. 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/ES7311000083.