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 0xe31d9a0edb5243ba280b14ca977088b00ac8b2fa6d3b5ae11d70198dfc78ae2f. 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/9e81abfd-cc78-45d7-8fd3-2b2fc7d2acc3.json and https://artists.proofprofile.net/proofs/artist/9e81abfd-cc78-45d7-8fd3-2b2fc7d2acc3.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 0xde8e37960a3e86b9b5a9c70eb9ac0a44c66229942dffbeb9c70b9dedbd8b4290. 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/QZ5AB2297505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f4122aae661a552c0a83d56187097200616f67a73cde85f10fab6b9172b769. 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/QZ22B1821160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a92017150ee5ae4b865ca2ede924872551e6b53bbdfb0c78ca1d19a71b64e40. 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/QZ22B1821171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde848b6cf29fee98395118c3fc638e161e29c9e8c86801bb1b7d013cc52d9ad6. 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/QZ22B1821173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cb79a628cc386b9599d6bd4e9e13217dabe89bef006e46432222bfe8f640e8. 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/QZ22B1821174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa708cfccb49353bfb01f082547db89396d8915e24f00efbf0a84eb7641bfabf1. 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/QZ22B1822811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c473173a58658a5458fad4c9f2bec823aaf02e87fb03c7a604eacdc649cfa42. 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/QZ22B1822813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e31b888479df81c504de19fcc67ddfe31c077530ff04ea728d95b167f76d71. 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/QZ22B1822814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6028ff314fb6a8e50fdf568b326846b95e63850b8eaaed5dfb6c68cc07058b. 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/QZ22B1822815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe231f0a43c6bd9c972543aa281f81e7da86bb2a77c6cf46264456f1df3b31915. 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/QZ22B1822817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea23a69a8a848ccfa785835ed789a35ccf20ab769a864505f9e288211981361. 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/QZ22B1822820.
El Tiempo Dirá Quien Miente - Bonus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a33a47a9babe879bcf2b28270350176129da83e886e0f3b76bf740853c697f. 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/QZ22B1822821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb90a5f2a7f731cff0e189981003cac51eaf90d36af6108bb9c2b9545ff06326. 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/QZ22B1800972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8d1a5f631548967bfb3b672a855a56ccf8704ae2303a99fb490ba036df223d. 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/GBRKQ2226256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e39a601304342b9113f3bb6a94548ae507a2a96cf4a8a4da438b873ce4dc70. 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/ART0G1205756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0e9b1757bf85047d5c4ab3fdc8908b3a27aaa5bb10bca7b6e7620edaf9b00d. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T17:25:29Z), 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/ART0G1205765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d67396ab028bc16077e390ddb2488490aa69652f5f3260e66aecf3abe4178c. 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/ART0G1205766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc004093769c95f3cc464dd10c6098e7b470e846e1f51baeebe7a1dd21cc8d45. 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/ART0G1205768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd464f76fe80ed8242b47910e48524b3e65b89f79f1c6eb9ff00fa389eac0927f. 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/ART0G1205770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e43064064c891aa0bf3b571686ba3107a1103fd26f7e32871e1a1e596d71a1. 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/ART0G1205772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bad7d8e0b141073d7fd742cc1837ceef9ae6d26e9422f83c44ee62be8ef18e. 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/ART0G1205773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddbb96f1e3567433ff3557423b6c8c8c5f3342dff83267a18738e281a76e962. 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/ART0G1205775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6a0cbe1dcf6239b63d3c6c0f8b2886d225416bcc0d9ae45a5b7128fa6eb333. 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/ART0G1205777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217eae09ce9b10d0a8441f8a6c1a940d98bcb3301866a5d6f4245cb87bc0457f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:05:47Z), 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/ART0G1205769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62f5fa5ebd678730dd4cc405833c9b100afa55d9c80e8696d6c7d9b3e332ca0. 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/QZWV32494019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d2342792e1abf34b289b749b2590e4e3a4fe4a87ed54e1c76921fb27468297. 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/QZZ8B2413021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62f5fa5ebd678730dd4cc405833c9b100afa55d9c80e8696d6c7d9b3e332ca0. 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/QZWV32494019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12ff17c3bb16cb315b994b99b878ca5f96b86f864e2ab3b95bfbee47969dde7. 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/USLZJ2378205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086243220a859fb5a4f4cfb41240d5f8ff2f85e1c7cc6288605875ebf874321f. 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/GBRKQ2251232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa1c5ad540ec58ce3cf8a26e73c8b00a52dd19bc910ee4d7e161aad81da38d3. 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/COC012134726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f0ef2899d61345017625a357d899b60f43a421fcfacfb4481a5bd3b461370e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ART0G1809348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbabdebff16c5c11ceef5e2083ff68dc967a36755596bb8caf8d36cbfced177. 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/USHM81953932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd2f7cab3ca5d15bb74c063dc81c10b13f49d3deb12c16ff4e9ed117b436233. 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/ART0G1205755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dd49337bec4ab6c7fc2b79d0e510b62081e1c6e767b4248e1fd0f0f8515c49. 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/ART0G1205758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c53c2d86776253fb81524a9fb117ae76a829909f829c9601dce00dc6e50b12a. 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/COC012033666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa5e239bc662686d5e9b034edfca254d5c1fcce988dbc5ec9e4379591763bf1. 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/ARIXB2105396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0d63c72e776de8a9981e03c07f22a282bf7175c1b4b4bfb8a7b9a292b00605. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US7VG1710023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58c8589b15d852f69b13c68cbd326e85c366571a666049a21284dd1f581aa18. 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/ESA011734932.