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 0xa1bc92d8069ec15bfb13293d10ba70a47583d135611bb0b723bf7f06c54f4c88. 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/e8abf23d-8329-47eb-99e5-da8e5e5cd6e4.json and https://artists.proofprofile.net/proofs/artist/e8abf23d-8329-47eb-99e5-da8e5e5cd6e4.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 0xbaaff8cf6627bda13180bd2cd148f6686ab67410ea6bc20d2df1a495af61a343. 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/FRX452492504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93c255ef99e21f2df56d55f6b53e49e80bece13842bf800f1956a1cf94bef86. 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/FRX452492503.
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 0x759a4681bc8fc4ffecb2a27cb1691c306aadb450cf95eb2bbdbb6540e873e9b3. 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/DGA0Q2366935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbc552d633f9d9f7d85767a6dbc06c9ffa674c34472c429477795df5441798a. 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/DGA0Q2366936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3d5a7b2fb1df9c3f2b1daefb996942edfc07ccb34cc579cd3645657d989cd3. 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/DEH742325263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc8767911045c4595f1ec09f03bc4cde3beb1b80ca9996e41319bb84a86d4d9. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEH742325262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04159600dd280c859d997ab982369a8345b77792ee536d6cfa670f607f687e3. 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/DEH742325265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80faf651a746cd41438946a3dfbb7320a042ec71e2664753713fca4ae754e12b. 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/FRX872141357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d46ad7b673a316c8a4d00174ab67ffa582042127ecbe2c71c2dd83e8e2f5380. 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/GBKQU2130407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d491d75555178bff83b7a66beb79010354c94b1dac73821f2fa2bc01b640728. 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/GBKQU2130408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c770edb3eea62a1b1f36bff00265d9e76331fc3a9ae9314214c56d9dd02b22. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/GBKQU2130409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a96fafe4a30fee4359209be25a4197a5e9188f6fa1aac311dd18771546782e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR26V2000938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7607042c666fee7e2e63c75f60a36a887ec8c2c550a2aea2ff6df5abe815ca0a. 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/DEH742035074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64815c9380d4c8374c283108140b0bc4e8138d12e43fbbd62f365e3efeee6bda. 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/DEH742035075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f47c1e835efdd3c697550d26013394c91aefeb0438cb83a6f01cd027f3c2b5. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:48:08Z), 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/DEH741906837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723d2e9ab550f82e6278272aa63575c5539abef146b79d5909b851f4a1ac309d. 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/DEH741906747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de6461be447cdc4fd9cafd9f9775de879f83fcbf4adc43e7d6ec29f3c7eb0b5. 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/DEH741906838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf205dee92f256c6edf1bc05286a3bbced2c7a3cae9a1cc9d25379f749ae3b96. 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/DEH741902755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8abd0d554419bfa053428fad2148e7e9212363e21d882b9de2bc17248863035. 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/DEH741902756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a5a695d7a1bf9f650415dafd3196f698db0e934dda2452712b3aae23f5c11e. 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/DEH741902754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227e0a6a907f2c522d6801ba05a852f4b9a23350a089bb5f965df9fd2ae65704. 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/DEH741902757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd0cb7f0312c83e9764163fbcdea0f0f9fe3b0f93528668694d1d8e62e9f615. 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/DEH741805446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9891970dbda82a8104f384c21eefe3ab60326ce2bf8d4fd630fdd245ecfb504. 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/DEH741805447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687699ae78f87bf8dbaa4bdc9e641efdbc2d0531054d2004306ff2f20ee1a5aa. 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/GBEWY1600120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1de71c752d429291ca903ed7ea95a67e716d6e4188f7410f6c5f29db844586c. 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/FR2X41789257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbbeae69454ae1e7c24ddb61e34c275c2ff32e3e04c7efe5aa6459c7a6869d6. 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/USY6S1500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3854cded42a4786242a169c7d3a04dea196b02ff8368dc37900d2f91b832405a. 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/USY6S1400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2f51bfcd10a5a185d1271c530d187c64625633b37e4f2a2e15cad14bff8863. 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/FR6V82543631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cb4a681fd42c9d1d22e94174ab7debad8bcfe0830dcf85515224bec298d611. 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/FR6V82543632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8166819eb1e1741f054df44913c60bc5b3b95c88f28fc0df8a41eeee48ce758a. 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/DEDH71300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141a2e635203a4b69e15ef76a39a1db8052592d8fe66f32dc154c12b11657658. 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/DEDH71300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1301596a721a00f8c15176e1722ca32d0cad08ef56cfa1c58ba53500a821e5e. 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/FR6V81878645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a2637327824626763f18445ccbe5dfa62ae6541dbb270f0601eea3762a0c0d. 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/FR6V81747947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287906966c398e4d9868439226126800af2ecf8c6b7dd58f251966be53448bef. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/FR6V81747949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4835c98e1ebf91ba077989e6edaac31dd9c1aecf5919497f6f476366e28d9583. 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/FR6V81595694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20792be613754a838acb721ca1b0d091be4ffe4e996f03b2b3ae677553b04200. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR6V81595695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065471bc1b0074039d27eb0c45b6451cebde31fbd8a190f05dbc375a2ddccf97. 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/GBT9R1200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537cbe48bdba88cef4ec1ab0d37f7275ffc4c8dd9b93a95f8eb09a1597f12de3. 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/FR6V80440300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26feb8abb8b21a9d91364a7aaae2f81f0241dcca125bb39f1ecff67b68931c1b. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FR6V80440298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd2b29b3d3e5a4dcebf37b6b98148ba679b29b86a74ae7ac5e2cd8d204307ee. 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/DEY471982570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9857aa520394ea514bc1c5329fea2984e4c85ae0595fac84ed0a58475076eb16. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FRDKW2300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe308582bd45d01c25fae4d8f061768a8abdfe532dba87cc2297bedc50c326da3. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEGL61200060.