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 0x3cc33df9fc5355be8a4b7e5722541266127b7e542e57de204c69a500ec25c6ce. 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/4d47e96a-8402-4670-b483-782fb12958c4.json and https://artists.proofprofile.net/proofs/artist/4d47e96a-8402-4670-b483-782fb12958c4.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 0x15e3829e9747c30e9ea5fb224d2daa125c98351de49b9dff30c20fae6d0aa166. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:02:23Z), 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/TCADD1705298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae47da6c9d7a42cb3fc0f7960ad87db2f01aefe25695d5559e3439fbac63225c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:00Z), 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/TCADI1788694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9071bfc1e51f705acd803a2df912b98e2881470759e3e172d08e56b1a2342d. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:43:20Z), 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/TCADH1784341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fe2fd5be1e2eaaa47bcb97f0ced1a60a923471a8041b5f67af0b376b2f992c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCADH1746752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff256a43d1a143e0a7d07b0a1c1c219d5aa10e166ec69fa4b1cbb2b8b1bf648. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:43:12Z), 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/TCADM1834979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952aeeccb646ab941733a123e57123afb3ff8fa37e0a17466fbc6e138a022c05. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCADN1860894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8157bd40cc45574b57622b963001a3b51deed2772fc4d7f2eb2f3b67d823c7f3. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:49:12Z), 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/TCADL1883483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc869ac9486fad3043a7ae84e3ea90a2caffbba349e104379017ce8625eb0fadf. 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/TCADP1833345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed20fa74a6fabb8be495b6fa512f85d889b5b4260d4cbf4b8c0c42fecb9072c9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCADQ1899980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3764e233c2525fc993c89bea1ade0eaf68a93ff694aca9942a86b495ab1eab91. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/TCADU1802186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c8bf01278ff72ff8e74ab967adc62cff1ff1475e8c68b65010b3829d6178a0. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:57:40Z), 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/TCADU1802194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6462a7b755d6360313cc3e052d7fa1969443c41f26d580f14677cffd7e993af. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCADU1802207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39525db92fb154cad61ec43cfee576912c68647137c67e8155d36b8abb35e6cf. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCADU1802209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f611e32bee0d0ffe4397985f50bba99274eeb47deb8bf9c82da0aa291e4a65c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCADW1872693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa962451a7dd50a8230697a8269c391f62ce590604be4a6735b445e8d1f17974f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5BU1994329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80871873d729a583adfcc843418216d94416739facdc5578c38f1fa177cbe041. 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/SE6A92134560.