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 0x9fdd600a998bf420e2a238c4c28f2a2de56b113558694033b4adde8e58dfeca9. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a255e35-2adb-4a51-9e1d-e7103e7979a9.json and https://artists.proofprofile.net/proofs/artist/6a255e35-2adb-4a51-9e1d-e7103e7979a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mr. Kivah & Sr. Armani: FUMANDO INIMIGOS
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 0xa6b04f287c0c3ab7d72eac5310aff61c5e2c873ea809bc825c8a48ecd6d5e208. 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/BXIV82384268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089607b0e4f308af3af92c964bb3f8411e98a376947e37e53a8a32163e1e0439. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:14:51Z), 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/BXIV82301069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995aa91089f9ec0a8eeb005a95ed9444a8904c1ff3f3ba34bf0db84edf1097d2. 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/QZTRX2446338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53aab3beed7d878959e830680f1f557b2fb25585a6e80a5a1696662045a0e1f9. 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/QZWV32376324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e0d10491b92676f75d11221598d08ed3e59a355010a2a3aacf52dfbf3cebee. 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/QZWV32376326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a70a54322b73bc027c755338c3c96a66e7ae989fa346f9f03f41294d3b4b81. 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/BXIV82294045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c60617d3a1933e4ab44d31c2a94358b1b60d9611b398ce844c3fce195c500d7. 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/BXIV82281045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf8cdc023686ff8962c972a2e9b500f7e3d11f38b436ef7b9796376a8a03591. 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/BXIV82265002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71e81465060c6ad6187f2e9816f8e548a8a1c0174dbe316e076d0b92b0d5060. 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/BXIV82249786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a6d2951df05bdfd079291b9df483b58e21ca6f806ea36a334d97a4419fe840. 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/BXIV82241764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a504e444f73f85ad4035c3406127093c978ca74c7c1a2aafb79ea9e8898c4a2. 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/BXIV82206341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4299f225d604246c70402c489f19cb6c5ba3191b4aaa66e0504114fd0d13b0. 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/BXIV82209526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b87ad5bbe77c43ebfc1e282defa87fd0bec5c334af0d2c83954501c119cc96. 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/BXIV82282074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112bbeb4531e1e03443f3b7011ffcddb14a2cb5a11da2860b6022cc717dc49f8. 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/BXIV82418184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4a4359a57d508939cdb7b69fe07fdc1d8f007e05c193636e92bbee42919f48. 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/QZWDE2399107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e473a72f855fc39362e8444f85b53f1d35faf1c128c2ed1be6cdac7b94181b. 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/QZZ8B2363245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5100aba36185b92c45deee300cb45bc259f58575badcc9a787d4d4d49ab86db5. 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/QZZ8B2363260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9b541acfec1dc374b35aa5eb1232a8042a19d77e6c6b16729bc8feb6ef0de9. 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/QZZ8B2363264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27630ef0db677dbbebe955622706cb600e8ef299c134b05798c8ce630185c406. 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/QZZ8B2363278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd074a5729ffd205748ce43544b0ae6fa32f9c76aa578f9b5558084e17d3b02ab. 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/QZZ8B2363287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa115cf0d1e4d970a70238e720bbece3019cc24ce42f6b85e695035db17ab35f. 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/QZZ8B2439420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2b35f9413221e788518ac9f4d8aff2731dee4f78e1d1e4c8e794f1b8bdffb3. 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/QZZ8B2439450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494b5cd4821956056f2be0f8f897bac7ed542d8950851d49f25c1cebe4c7045a. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZZ8B2439459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9adece2ca4c69ac710906f9c923c12d831374da7f0149b63f6aa5460d4f7b47. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZZ8B2439474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540bbcb432490e132dc2d9164612d8b464ab67b632008074dfe383bda25cb138. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:56:53Z), 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/QZZ8B2439520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6feaf8295d1ac2622c0b1a88e362f090bc251d6603c1689572947c5bf02f893b. 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/QZZ8B2439574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33898bc248bf8521c0e70fdbe7373c06841c6c22d332935720c6bde150eec6a9. 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/QZZ8B2439622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70d73b3f1c89f02f59f67f03a55e6d6a0adb1f43d1b4dff848192a88bf65ad9. 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/QZZ8B2439667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241bd7502d3e26501839af5e870be47d96a3359533fa0a6c200fd090cc06e7ff. 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/QZZ8B2439784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5706b48bcd95d5c122162d2479b3102d88c538849f5a48d742b834e50dd6ce. 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/QZZ8B2439809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebc2f22214267972ef35fde98d4d52c94bbd7ae14d535896a8d13051ab2dc3c. 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/GBWUL2150451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0136e24153c2e458eebd7a5243aa9f427944aba1b85c5e76a2d25a82466c553d. 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/QZ5FN2593941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28f6d3d301da0cdbb64456d19c90e4921b1c039fd0d8f663e2ab63b05c4be49. 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/QZZEB2449043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1688358174ab87db6ca825f448e326afd63bf42c9e67bad00fa1718a97d2cc2b. 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/QZWV32533521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdcea49601d6c42f1c8d8ed287d4e6d4fd466e5b6aeb2d0134d0b9952b6b248. 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/QZWV32528643.