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 0x1a7f34797ca34a661b0d27f33f61488d94e27267d53309402add428057f71238. 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/6ad4dab4-ea87-4432-844c-0acd795b5bf5.json and https://artists.proofprofile.net/proofs/artist/6ad4dab4-ea87-4432-844c-0acd795b5bf5.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 0xbbebbe374a3e1cb6ab34506b2eebba304dfaefa5657f77210a21f917b1ed5759. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/US78T0503310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941aba9ec5e3375a1f4ad261bbf7ddd3ffd0e4586e12e19376109b4fc322ee23. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/US78T0503313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096996310b812e7de9389c7fea18b82eadaad1435efbd2fdb8819c9d8aa21357. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/US78T0503316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8ca1ba918da780bf8a811b4237d6999b68cfbfd60b781d4a01672132e3609f. 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/US78T0503317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42dac47c1a285aa1dd8cf084c1557f7b402e2eda1685f252db94b330c31a81c. 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/US78T0503318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fdffeeb40851d7b4ca4a82f8708272f173dd71acae4762f32110cd6479cc7c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US78T0503320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b316ea34c6b4edcd32ed1d7a6f8d4915f797f805344708c3ced96ece457b01. 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/US78T0503321.
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 0xf983ff84d399cb44fde7ec286fae65afc8d3d10474993d1865a08b71baaed449. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/US4XG9401872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e8dab7a605d1a1601f32071c83cbebe1cd6a6ee6fd2c22fcb3829f0817ebee. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US4XG9401873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5892ca4f3237c4c92f5549dc31fcf1b676db4f9326985377645900dbf421e502. 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/US4XG9401874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7d8f0bfd65dac32635b805e3d6385c5ce5e0abdef723ab1bf4984ebd4ffccc. 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/US4XG9401875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5f772d3ec1e72838992c26a0415d94e5f72044fcf49cf4344a7e74db09d32d. 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/US4XG9401882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2267fb0570457a9d13495ffea25831c4db8cb92b9ff404b4f6574cd7b0774e. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/US4XG9401884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19dd585818851a7942bd4ea6aaba5564d0e2af8ac08eb4069c69f68e5fb44b6. 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/US78T0503196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc800db24d6fffc8cbe4197058add3452e8a2a4e0f9d82dd6f0b682f13293afb5. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:36:31Z), 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/US78T0504908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8878977f18e37649aaa25d5ef33d940583c740aff01a1f4a90da7c9769732b. 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/US78T0503201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7778e5109d33bebc09cde8168c1e43945fa00a1e9aecc07c4f21dab173d6c6f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/US78T0503202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006580c1acdfc6b29e6a9f3d96024f81533e7331294eeb067333af45b9acff49. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:19:50Z), 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/US78T0504911.
La Epoca de Oro de Cortijo y Su Combo Con Ismael Rivera, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ae9c230c73e0811463d1fa096bc924e9a84b5d549e79ef0ed1cbeaf7454caa. 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/US78T0504916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851713251b540cc94830853719c2cc8a60a12e96675ee55d5fe5a06c0481730f. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QMYW20300637.
Recuerdos de Latinoamérica- Cortijo y su Combo
La Época de Oro de Cortijo y Su Combo con Ismael Rivera, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddce39ab69ed0b964789493c4d4cc4089a1c9f7108aa6bfad6aaddf1c92a3a6. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QMHUY1555393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7566fe7c597c09341827c5c60df2659d3a9cacf879abb713c8cea7c571e0a32b. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QMHUY1555402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5366307cc1d2d5c632cd59b32ff570c4ac4df12c3a60f87370ed252de7ffd723. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QMHUY1555404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc24f593ebcb5d1cf114d793fd4879984da657a0c0b2c7580f33051e1b49b047. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QMHUY1555273.
La Epoca de Oro De Cortijo Y Su Combo Con Ismael Rivera, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7ec9d05cd81a093ad4b1f1a59eb323193c52195b2c7d5f1a3b02411f8d73d5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US4XG9600332.
Explosión Tropical - Ritmos Afro Cubanos de Cortijo y su Combo e Ismael Rivera
Essential Classics, Vol. 379: Cortijo y Su Combo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc024e432b32e25f9e44f056aa512d037071fd74eee761a97003a7d4a8e852ab4. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZNW72407209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32761b71a7b77612a13176426d627df8b3fcfd3dfd9de76ad3b05e10f134896c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:44:12Z), 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/AUGBT2424807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d15e35842f16ce9f73ee06cff57ceea634bbbbbc70d7c5ea77ec47af07140cc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLHR52218648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7fb0df9bad4dd9a7431af1def8bf234e5653683647b756e4e2b8e197145749. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/NLHR52218650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132e283d5f5a5c4c46c72269772894ec61f5357c27da6c62cb71746914c93a89. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLHR52218653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26807f81133f38a68d37262df4fd1064406ab58cc2464af26c1835ca45a5dcea. 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/NLHR52218655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cee6c82d88912d13f20751c4b8f4e4fa948eb944ac84ed62d636511341c08e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:43:33Z), 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/NLHR52218657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7aec0f99a21a7af2e3a81f74d4ae96947258c56b8b6ac0d97477c8183bbc1d. 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/US4XG0408673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef180da1828279d5d44c8f1e5d76a42e004d86fc23baaab7c1a3ff97774b784. 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/US4XG0408682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd83b5066d8801a44c2f7af535d35b28fc6712fef74d5d70bec49512798309a. 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/USMP69962676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa144e2c5c90e2885c76834b96cb02240abfd6be30e96be12ef1da8d8ef9ed313. 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/US3Z41700708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27943c6397337f36ff86de34d2b56feea1f15872ee491737acd8efcb61f3bcd5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:01:59Z), 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/US3Z41501086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1470677df9ffa5d020353a5dffd6795cc9c3760e25bb96a9316cb8baf68c69. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US4XG0303592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158c1ec915cb42b0f426c8502f622625829b22393be55b837c7fab370ba2b4d3. 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/USDBB0606364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b54d24ed50a63e32e74a62c38871b35a08be602e6569e5712ca766b773b87a. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USDBB0606232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5badde514174d89b08fd54c6417009bb3588920dbf7624c733e804a8bad808. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USDBB0608704.