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 0x74bc3c5470bd1e6ec96551f18252ac853a3066298469bb5d9e93fe9bc4dde140. 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/f36f2e0a-8396-41b7-ab9b-06c8cb05390c.json and https://artists.proofprofile.net/proofs/artist/f36f2e0a-8396-41b7-ab9b-06c8cb05390c.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 0x344fc2962970c1341ffd51ddcb4698b1d6f84090259fb8cc81e63a11e3a07284. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLRD51966010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b335d1feb6331f884b4f10ca441db090c93c1e2aa475431107c1093d1501b6. 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/ZZOPM2110307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524855f4b4a2aff46eccbe18dc283918e287432b2c06b64813fcd3e8f237dc4d. 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/ZZOPM2110316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7366cf88512c6eee3928a7dfb772168fa6b681025fca4afc5c7fcd478735da. 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/ZZOPM2220532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b335d1feb6331f884b4f10ca441db090c93c1e2aa475431107c1093d1501b6. 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/ZZOPM2110307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c025b923709064fac4dd7d7e81c2ecb3cdea9ac339cf4046d5d8cf8dab8d14c. 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/US39N2203701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8172d9a89d40d82def69da01da63f37074837f5a8261a68931cbfc259afe039. 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/NLRD52302212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638f8aee2e9145cab11e2960379978f68dcf82fdcaf92e18ce4cbf5d0df362e7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLRD52349109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade2bf05d212f310b21a1d67dcd99f56aabf3d9169a9de0cb450e7e844ea05bf. 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/NLRD52349126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9962ce1409e1ae1ba1958ca8b9b454967b82e30b4d43efa66f52827d7ea757a9. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/NLRD52349144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803c6b507c9ffe91a798f28d308b061aa6770602836f8e1f79974f2a11aeef4f. 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/NLRD52017764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c50e812a022d66160fa536d413aebdcb5d3d497bc91663c64c0ddd2a3493865. 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/USUYG1163455.
Hoola Hoop (feat. True Story Gee & Lil Durk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcbdd40509bde4b9ffe61cce8e273a4ccbef06c88b3053e51e8858100d2d82e. 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/USUYG1221741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b232beb929f829d66d289ad3568d32a4a31328d9ac6a389a950d0e9c673436. 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/USUYG1255647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039701d08447e193a0e3e7898fec89e08bf1bd0cef76b2cc88d5487a2a5c9a56. 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/NLRD51967866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107f17acc247915182712d3d3644693a55705cba32ff34542021eaeb37ccf9ca. 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/NLRD52017761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344fc2962970c1341ffd51ddcb4698b1d6f84090259fb8cc81e63a11e3a07284. 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/NLRD51966010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79abef9a6dd76b58a2f0539794ea18be5502367d10e9d964e45aee5c06349936. 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/USUYG1221747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac41bdfba394bebf246d3b3a9e41868de091310bc962307227988fc7c737afb. 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/USUYG1163453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfd7eb730f22eff9bee2ab43fd116dba82893418a8c0678801e7252b187b4aa. 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/NLRD51966013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0228fff90cc55e51e025a3b414955957f100be33623d2cf30edda88b015f95ae. 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/NLRD51966014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5ddc20f8a1828a19ea6460199b9aa57059897e2c414548fe2fb03186073c43. 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/USUYG1221744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8966a04021cce101164380439ff41bce179cf8c59d9d6141024d3016ddc9f0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLRD51966062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344fc2962970c1341ffd51ddcb4698b1d6f84090259fb8cc81e63a11e3a07284. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLRD51966010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039701d08447e193a0e3e7898fec89e08bf1bd0cef76b2cc88d5487a2a5c9a56. 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/NLRD51967866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfd7eb730f22eff9bee2ab43fd116dba82893418a8c0678801e7252b187b4aa. 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/NLRD51966013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0228fff90cc55e51e025a3b414955957f100be33623d2cf30edda88b015f95ae. 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/NLRD51966014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c96912ba555546d8418caf04bbd04fb561e3417bc899bda0fe3e7f071ed4e9. 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/NLRD51966006.