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 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 0x539be13fc502dd3bca82f4cf2c6782cdb3eb02ca6ec9d913d177607fb5a2c255. 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/143a5148-64f2-403e-affd-4dd0a439813e.json and https://artists.proofprofile.net/proofs/artist/143a5148-64f2-403e-affd-4dd0a439813e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Prohibido el Paso a Toda Persona Ajena a la Obra / Las Glorias
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 0x705caef2d844376dcf34f600a79680caa3f9ca0ae2656ba615b8b217167e98fe. 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/QMDA72381709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140930ff8dce5aacbe8014bad028e9c2f532a16ca9350533d26e21f62a8e264b. 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/QMDA72381710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047103708984fe4279f1fc792d7af731837b4798fa8743cd756a8f5f16907b91. 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/QM4TW2349326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91651cc86855d1bb6af5bad6d7314d7add69405cda121b715dba3dc5ab7c9b13. 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/QM6N22338933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7b54fa77c6495c8782829dc5cd0a2c62609c4bc1777626c69f22cbf96f9d09. 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/QM6P42374533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b3cf1f743e90953e1fdb0ff7a4d56fdc49922dc81f520042ea7b43e4aeaf29. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QMDA72381714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049bdc9a413452150cd34bba9c8f9e9b0abc3ec5c7f769b03eaa06bdd4ca8a2d. 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/QM4TX2333586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12361ea80da656dc4f395befebfbd890155f57ad8b9584020d52cc7839a42a3c. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QMDA72381716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb18ba94923805d96a470c2f93dbd3be2032365f809634a634f08fececd7befe. 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/QMDA72381717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05b49f30beb1f571a37525138fba0e91a54812f21c37c6acd5770fbc5c032cd. 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/QMDA72381718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2946aadf428d5dea721f4f177904b1cd2a6c3d2eb8f19dbef426a0f513a21521. 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/QMDA72381719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b3cf1f743e90953e1fdb0ff7a4d56fdc49922dc81f520042ea7b43e4aeaf29. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QMDA72381714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7b54fa77c6495c8782829dc5cd0a2c62609c4bc1777626c69f22cbf96f9d09. 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/QM6P42374533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91651cc86855d1bb6af5bad6d7314d7add69405cda121b715dba3dc5ab7c9b13. 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/QM6N22338933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049bdc9a413452150cd34bba9c8f9e9b0abc3ec5c7f769b03eaa06bdd4ca8a2d. 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/QM4TX2333586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047103708984fe4279f1fc792d7af731837b4798fa8743cd756a8f5f16907b91. 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/QM4TW2349326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373a8d47c330a37f80e00f06c9f5423e70bf7d58f230076bb5059712b8d7af14. 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/ESA092228093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e75ce321d0f1cc2ab3a16040eb59b8746dca482f0e381e056c1012b22e77f3. 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/ESA092213554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8795155f541ff143ff7fb0f2b8d85d309432ecab0a7e8a54efaadd2779c2b2dd. 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/QZHN72145500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000902b684e63a8900f7021f294bfaadd9a0875fbc8bba94c0e249d0e74176d5. 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/QZHN72145501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcbc88a6d93ded507484e53c3603a8786ffb90ce9eccb1cc9d4dbce594a04c9. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/QZES62179539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54c7454f8cac55ac080956ad4f5f83ef99a3626a5fac772bb6b4c3ae87a6122. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QZHN72145502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55697842cae82536273196f5c076e9fcf03992f412cc7007dab0938ac765a62. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZHN42139857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55697842cae82536273196f5c076e9fcf03992f412cc7007dab0938ac765a62. 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/QZHN42139857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcbc88a6d93ded507484e53c3603a8786ffb90ce9eccb1cc9d4dbce594a04c9. 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/QZES62179539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039ac08753b2f91bd3444a1e640e598e51b19dbc0d692a9286c2726aaf55e5c8. 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/QZMEQ2008643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c835fb2d6fc45b1c2c303f7edf1e79d3e1e38fafe4fcd1c5e96e0e299caa5c. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/QZNWS2039370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d23660a9af91bd4aa2a2d4c25f0976c92b84e65e6774bf1fa6415c0511d272a. 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/QZMEQ2058413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb124b4df439b353b847d40b885e5f132eade76462c209c77b5a83ce77a7efbf5. 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/QZNWS2039371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cda347476664d052e63e33ce18fb9a3cf073aa612cd457462716b89c7c9616e. 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/QZNWS2039372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d23660a9af91bd4aa2a2d4c25f0976c92b84e65e6774bf1fa6415c0511d272a. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZMEQ2058413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039ac08753b2f91bd3444a1e640e598e51b19dbc0d692a9286c2726aaf55e5c8. 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/QZMEQ2008643.