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 0x2f12274fc8a57dc829718617ce246e97c709f4b2b55ffda198fc265bb89d1987. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90d7fb7a-34af-4ce3-89b4-7746a1721d14.json and https://artists.proofprofile.net/proofs/artist/90d7fb7a-34af-4ce3-89b4-7746a1721d14.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 0x465fffba42493207b14d1bd9a98b9edfe5c6e6547bccd5c4f0f8e58c559a6675. 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/USUM72112127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d550dc0b086eb504794f93e9d8d431a39fcc760eca8b79edefcef0be9b947f. 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/USUM72112129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fae816e57d8c1fa8130c529b452bd1c319d8b7acf5bd99bf84f5fa130288065. 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/USUM72112126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ab3d28506cdb69fcad671f2afd4f631f0bface417dd10e79ce36f7eaabbef6. 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/USUM72112132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35c80737d0c87db45202614e08a6c31a95a02295a91abdcaecc4c04addcdb8a. 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/USUM72109203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d93486ff493d6e6bc211969eeb6a02d66ae90dd8fb9f447e2f65dd1f5241a6. 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/USUM72112130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aca29a2a29bd2c48285b23890e4d788f42bfad918dd35599c08e19956ea4258. 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/USUM72112131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b277688e173ffc9b49a412453c5c9117c5d622bc869d7046aed999290aaf307. 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/USUM72111309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd709a74b1dacf90cde5e352c29dd095c8766be38016babfb7daf8f7df246ee49. 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/USUM72112128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd151fd679c9c910c5fa0e12ca43cbdaf9e4ac71b57b78a248d36148037de523a. 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/CA5KR2282949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74226a9ac9ab4b8da2f8dd423c46de790ab2e72ab70ed2ce4d80407ad5cbc405. 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/CA5KR2271226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8a6c8857c6c0a1c5a38f2257b3af27896a4478a582c9472aed1c1527da7dd7. 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/CA5KR2258561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24545f87f746789d71f817add20e6634d1895593adf534c6f32a8f0ffae6f380. 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/USUM72118138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b277688e173ffc9b49a412453c5c9117c5d622bc869d7046aed999290aaf307. 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/USUM72111309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35c80737d0c87db45202614e08a6c31a95a02295a91abdcaecc4c04addcdb8a. 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/USUM72109203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55a1f59230abb32a943bbe9d8271a3eedb3d05ab2973e3ea65f5770df8a75b0. 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/USUM72106294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbbe3a2a1ca585c3c286e5e624d0ece280ed74384bc9e342b8d2cfe4601f5fc. 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/USUM72102565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af573617cd4124492b530b443ed3fea3aa03990853dfe138cceb88225ac642c. 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/USUM72024604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500dc213519507972dcba5e1b9c706baaa648b79c9f0d5f2c653ca5743b8c58f. 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/USUM72100163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafcb27fa6f75da3485ffa3d3ac8796318c221956f2267f0359dde154439a215. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USUM72022694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c70f10437026e395a5397d07494a3cdcbebb73114cce71d163822e12e58399. 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/CAHQJ2248722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf46fcc5a43c57332319f79c6ba17470f8f4f7f86949ad296720631fa0409fa. 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/CAHQJ2248727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089fb01ca582a3f4dd1b7b2f409e8b5076ab9695ba0a11dd48f65c0e77702ef6. 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/CAHQJ2248725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ac1b81d04e9e2e6c49262fe5ea0927a8aa460b369127e807da083f141ed979. 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/USUM72024651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fbd9a286c5e5f166a96291cd92e250d297ca5626ab674bd4bd6e278dd45a37. 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/USUR10080452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0a69cf2491f2e1cfdc2b807559b1ef7f505664d9e2f2d56121c1db00cb6106. 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/USCA20400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c7559c1d3ef342be759979e49c40bbcb29245dc487c79a636c9a6aa638499c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USUM71914462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38292a2bbdddbda4d1b621262d86c1bb6d8b73ccde74730442ad7f67801a86f. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USUR10300625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d9cb210c1eb8b8525fb18d1343f72d8b4289cfe6c21aef193f13a70e94d728. 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/QMEU31724288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d18b4b829d91c0e44caec197fce919ed2505ce3ba3c10a93f44d074ea41d87. 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/USUM71025042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b90926d37a4aac4b06f903003eac243a73217cd3ff34551d898e5927201480b. 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/USUG12100852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba4dc50ddcb42aacfd7c113ed0742b2d0750dce81a467aab79af1b03ce8f6e6. 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/USUM72013610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e21b252ab518fc859e9e68c9916a0939f6933c8e51d9a4dfb61848c06f7208e. 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/USUM71214600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e791b5c2129c73e9950a76b41fc1d8b4c08db21c8727c0839f67c73129877f. 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/USUM72002003.
Have You Ever Heard A Love Song On Drill?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51acf3f95da087bdb0f9112f9aff353182559d15271c641a6bd90a09e845878. 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/GBMA22061798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cdec5bec6ffddf8642bc8ceca462edc7f301b3cb5401dc10402387008787f6. 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/USUM71919082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d68dd0a0b3ee8989c1a16de8716379ba20236311d0f4ac979f2a5aa1cad885. 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/USUG12101608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1881c7c27a64ece1042f83c76bdaa065096aa7f1912bf147da9da9565ab7e1a7. 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/USUM71803843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a1bd557511ea9065ab0b79fb3900ff025d357e3e384cf68de18f454742c06b. 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/GBUM72000306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177a4ce2441c3fbf61e75c317a13c919655b5381e8c2e4d3003bfb00278eea7e. 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/QZZ7M2442899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb07b6eb839deb80e5cdcd0848092cf1bc62d75e198ec50e41ab40923d6e4bf0. 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/QZZ7M2480831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70084580cfe92ca633bc62839aab595f4db1ac896871c78a7c2976102ee85288. 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/QZHNB2591156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294dde591ad9610d6a81956bf05c43602ad55c22e9a5a9b8eeffebba541b5b5a. 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/QZTB72304937.