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 0x0f2be5451e8ae7d1bde4fbe7bcbe6a83e5537264973d45abd414beb2175f1254. 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/c021bc6b-2cea-4af3-9140-b91b01cc3be4.json and https://artists.proofprofile.net/proofs/artist/c021bc6b-2cea-4af3-9140-b91b01cc3be4.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 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 0x0a7fa580c6e08fabacff805322639fa74f9a07b72a9804727d97d8bcc74a5f23. 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/DEEK21100399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fb82906a65b2cbbfaa66038f6439dfbf451358863e5819bd0154b9c95176b0. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DEEK21100400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bc780ace1a00629af2932d475ad2faaa8855432ecada343cf245f44fadee80. 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/DEEK21100403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714b10838508e56b7e604e3160ec857522489e0797e039d951e6e9bb1bbe52bb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEEK21100404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6bde12a3272f5a2a2bcf0e99d1c5b215893fec41cb67567b33201c0043d0ec. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEEK21410020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4ab6a405ef6675ba2825c019922fe4fe5b54640dccf300fdd5e14915283d27. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEEK21410018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9dd8dcf73cce43f7ce061e544699d020b55b29c7429d1abe82eb357ef126ac. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEEK21410023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad32d7368b0903d1b1592fc4f147a6e2ed65413fc60cf406c8d77a5a7d99882. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/DEEK21410027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d746c3cdb93ef547a9f3cfe9706c4625b6f3927ce05b70bd424a1451c38b4af. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEEK21410030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2119397115b967d5e1e801b21951c23abd70cd0cdfdcb3def29ba8b15dd2ccc9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEEK21610060.
Ohne Chaos keine Lieder (Deluxe Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7dd9d777bdcaf7ea3d6cee978378ac2c2f330c0b4b9a890874932acf9df3e8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEQR41700918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc630219bd87749437f7d59110da9bd2dddc030366ec72827718805751b34c790. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEQR41700919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640839e73d7f9a635ffb26d883b9fdbf49671da2dbaaded16879518cf73f16fb. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DEQR41700920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812274f19ff385b73d20755e64788671af62b64d50960a717abcf3c06a7fad7c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/DEQR41700921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4df319c8b3ff01e8993f408ff810eef196b78f59b1d474913e5b9c70360998. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEQR41700923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd2dd9e46abd18633d6c7dc152ae2d68fb9914986cc05bd89192b7bebd26284. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEQR41700924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613f022fd6fb15c9da24111468fa320c227cfa34191cffb5e33d61cd436ba042. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/DEQR41700925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127e98639747a63d301867535821d6c64ca9695638ff77787d5d9dcc1368e361. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/DEQR41700927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bca26b236224f8e7d3cbe8d7a65ba794f403c35533334c4cc1c171e64851a9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEQR41700945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1df99cc127d36a8c5185b5e1418d44bfcfd77199777c05b67440c1b52d8afda. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEQR41700946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d14757451c02c8a472fba37215713d0efe7b64f6d613a13ab3c222bf130b7a. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/DEQR41700947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb13752fab254881650536baee49a67185943c20a4226df8eb25f90478dcb230. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEEK21910054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7610925e3bba025d06bdfd1f644095393d789d9b885a2ddd22f4bd216b97d30. 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/DEE862100574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93a8c589ef4d289efc19285b03bd51260094823bb93b135a48993118e5dd770. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEE862100573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7610925e3bba025d06bdfd1f644095393d789d9b885a2ddd22f4bd216b97d30. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEE862100574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66d6947dc59883f9cfc69cb20127d110eec9df61b212b8afcdb2456d7e087dc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEE862100577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599172984525e30576e0927e3455e158263dd65ed71e6f96b408c78f545c8dbc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEEK22400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70c487ae63c622554d6b0bc8d1d6babb6f5848a720266696585292fa1716871. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/DEEK22400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631ff205b134b97f268af51245c28c40d66f32f4c43990714fa54fb7a42f1697. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEEK22400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6bd43b9b058c4e5d0ee6729d22b07553b02095847bc240f4c094881b6f6f47. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEEK22400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9136474aa435a5c699560925320a69de05dc4ccfcd5b81e0a59e972feb2ee82. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/DEEK22400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c8b4d56a9c271b649610cdc72d9c80ef4f30931cbb2611a8553b5cf10505c6. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEEK22400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247a8c1c94b69386837372c5ef4873d7a5d3953a4d976121b2a06664d61c24b3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEEK22400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4552cb33741765c2d774bce66ff1bce58ef266207e7f4536f3a60f321e682b7c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEEK22400166.