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 0x08491f56e7b86b6651e4b4b47940c5920b77e3ea6e82cb4746fbf8a9c554bbb6. 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/ddb67957-78b1-475a-9d6b-e4caa378fa22.json and https://artists.proofprofile.net/proofs/artist/ddb67957-78b1-475a-9d6b-e4caa378fa22.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 0x7a7b2640a869cbf9301bfa0ed4e2a4052aaa00187b506e122920b915755824c2. 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/QZ9QQ2300963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7d015939c06dc7ab4d11405211c6e20c40cdf73e8447a1fc2237e7c1cd277b. 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/QZ9QQ2300567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bc10b2f9b1cd330a5f2392cbe2f30fd4553039e48357be513792a62edbc818. 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/QZ9QQ2300545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b4624ad05d2d5eda13b0d93413c1eb124f9e396ab8700cdf5bf63f0b7d81e9. 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/QZ9QQ2300413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883d23e3f7021f7b7d06bbeb24eb37f221f28885079052f9c080a41a18cc5c2d. 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/QZ9QQ2300335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9c5e0d34ee0aac74502c4e048a7f0b5f3ed3efeab5e41f96a844e47964a876. 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/QZHN52346686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c034f70fd1d76914cf99a7516db2efeb5b7f0f86e8a21dbdb1bb69cf7bb5e91. 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/QZTB72219607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89b70c7807c14789088f893b73ba9cd1ad8affabd87c484363068efd955ab1d. 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/QZ9QQ2400186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d12dad42a0f4371b3e9ce6a67f20a541e80ea8bbefcffed6e53e5601802feca. 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/QZ9QQ2400187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51738efd326b237bb31214ffda70683c129a11fa6ae0d241e06c190ea53f49c9. 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/QZ9QQ2400188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe5c51628b71cf603531c99e79edf97cf21a10f1293d1bb88ea9cb581fece59. 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/QZ9QQ2400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ca900329fade945a2d5860c25899c880400c7c42abec59adaafc48c5bfd509. 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/QZ9QQ2400190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20293bfdc731f96711ec68b35fc01ea15c138e08d993287150d9cb709398d9ea. 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/QZ9QQ2400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1ab3b3a0e3c81b7e93612a57888acdfc67234a6107bd3a721197669a9d7787. 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/QZ9QQ2400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e698855e562f822672794b09c44902c3f60ef94f39dad949dd01b67694944a4. 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/QZ9QQ2400192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4692d3632f96b0c1853ac21b96cbe0f09fbadbc2711e4aec2b8f7b5a39b774. 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/QZ9QQ2400193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302cb14de27750c6f91deea4f3eb45d49548d7f908b429bc0ba235d62969bce2. 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/QZ9QQ2400194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f9a7bd47aca51e1ac4da80c368cdeba3dcc06027a41afb2254253216b7b5d6. 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/QZ9QQ2400196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20293bfdc731f96711ec68b35fc01ea15c138e08d993287150d9cb709398d9ea. 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/QZ9QQ2400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de4fec6e25f72924e393f89ef43e5a60e2bfe1ea3a389c7ae56c972e45952d3. 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/QZNWX2325025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308cf34bb5f843d14743f5df910d3bea89d467b261bbee67a432f7638805bb29. 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/US3DF2508499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc122608c36f8f3f7ba01ac3237e71d2b3bd0d46a0da43b2b769c8914ab76e607. 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/QM3DF2409567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad0c4a998411b7f77ac51a2036aaf0be68f1b1270a51db8866bc4590e6ed3bb. 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/US3DF2508505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61614cd77e53ea20eb5ec45dc0476f4e9c886482333eab6d21938f3c931cc94c. 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/USANG2470714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0407273bcbe2ae6f0d5e05872423ae9ccb0508a1b3c34a65096cb84ad6787976. 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/US3DF2508507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6dec632f578db14876a14527a1336d40d17b78b11f6598ed0fe3ccc64b8b2a. 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/QM3DF2417617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51015a410bcf4c83e659dc18c60c94250f7e593cf8881fecd5c13bfb42c19185. 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/US3DF2508509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160bebcd64ea12d23d3895a55c5d0c26ed2f9af53ec4c2dd316fb897b8ff1625. 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/US3DF2508510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c21507bb5f061abd4e1f4cd837899b6a58f90f7ecba71a6a442949c501567f5. 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/USANG2479892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b0c3e18d8398fc94512eb88af8bbb720e2dc2b17feabdeca24cadab8c2a126. 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/US3DF2508512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3302fd14c3a0a6717c58cfdc89dffbd7ba69f59ae70c750bbbb45e73600e1f. 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/USANG2494873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dae77ca84c881110a0b3c7b2f97319b8aa5134966e81db87ad7d960cd93d85. 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/US3DF2508514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672efcbeb76c29f6d8cbe7877100f6c0d69a73b4c206cf46d2d851f78d335043. 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/QZ9QQ2500092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ebd85799c4beb0cfc183829430132485a93f5c884952d9b4ff541d47b5ab55. 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/QZ9QQ2500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7709cb8c798154bca8926acb12d32f6285f21ac9f02dcdf1b2ad76342ffaea7. 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/QZ9QQ2400599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb947c66faf997a8f6bd4421359661dfcf708433d203da53cb2ddb1ec1bbf0482. 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/QZ9QQ2400525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aef0e8c90e02f3daf1973889e833dfedb5ec5b7394e08beb1466012251182d4. 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/QZ9QQ2400453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a97b92b8e469c71c3f33b1d8b245277d55bd75b0b05d13f21f987e65b227c46. 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/QZDQH2420144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499aaa49089c7603eb80d5f38a41c78b389fd4be01caa7b76eb09b9d56bd2c53. 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/QZ9QQ2400309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586990221994d6ceba550048f3247fc6a736e215332cb7a97cfce07913fd488f. 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/USDXS2500241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42f84427a990e9fe35778083731ddb988fe1cf8c7542d04f63ed3e06b03a1fc. 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/USDXS2500243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090ec9c33650c9d2d4a2735ab098850463df771c8bdb52d6c6c72707e0b09494. 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/USDXS2500244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf0cf83f79841334f749bb2babbf452607258f7e0f2bc51a31fcee29a87973b. 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/USDXS2500246.