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 0xfe0dfc68b8814e410e914c9609ce72f80d566222e8c9d2143e44a8fedad0c9e8. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aeaa3704-73be-4a92-8cf5-31827373ce45.json and https://artists.proofprofile.net/proofs/artist/aeaa3704-73be-4a92-8cf5-31827373ce45.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 0x8536d0d6a95b32c4ddbc2591c2b5c48560bbd38a329e1dab264b3e9ef52085d8. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:42:48Z), 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/TCAEL1965185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2f9e55547567db5d3b7498ad9ac744a27cfd2eb3d5bbb0babce5a729656aad. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:48:05Z), 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/TCAEL1965200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0726f36ab7d2b55ed4ce3ddc4d9832c8ee85d7cf3b66fdc9907a7cb655dfccdb. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:42:45Z), 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/TCAEL1965321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcf34cb500651b355fe2ef29d2845c964ad8b221a431da39c5a36da59fa0ad3. 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/TCAEL1965529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6b2190073c0afc368cc8decb53f618ff7777b88ab8fc09961aa8b8d8a664a8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAEL1965389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9557da0625e7e5bb779929fe87e45bc7a5268fa2974ce3b52af8c1470ee56ea. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/TCAEL1965310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2db64c7984760c146bbaa3feda548bee7541adfd2e8e0cc296a2cc3698fcc63. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:46:28Z), 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/TCAEL1965272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05d3d3a96929bbe3e189e8e55caae685fa5567b744629262cf6210711bea518. 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/OZHN52084232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964412399f150e119c91580ff7930b6e2f321eba5edbc7eecf1b7f98bd885237. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:05:20Z), 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/QZHN52084231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5603f3b84f54bf4ce51f821c9b6ade6413497bbb9dc05346f262fb58ee582d. 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/QZHN52084229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37e368bc9fea80d2d220eacf85e71cff0953ff35c89c227500699fff6df99c4. 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/QZHN52084228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb4d2efc16d71c6204f9a622f5b625f9a504899f3ac9f95549ca509005f5356. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE6A92129155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4bda14ea87aa073669260610b4be9c3b692debc89739d057fc050526e6598d. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/SE6A92129158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6815a2e1e11b749a11ac010156662bcb239ce6ff69f70ec5eeca4c334730e8d. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/SE6A92129156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cfdb1d7b42d3002618e4d4bb1c413e9256e62e030069183c4b3a3c1cd39e14. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:24:55Z), 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/SE6A92129157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e8d9b6db68cf0324684298054bd68c80c921fcddcf2337019f855bbf6375c1. 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/TCAFD2060975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a891f0814d87e8464074650fdb727ca3f861118e2ad709445b8161dfab8d321. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAFD2061138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf868afb78598f7cfc7cfec80c337fce325878cd842a88308ab2fd6ce04f7fcc4. 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/TCAFD2061134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ed42116d9db26b9568692e647652add426f444505998b2c992ad6afff9bbcd. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/TCAEK1920929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69f4efa590fe649e27324e76a1ab37a42a9d97a6c2a24d0131ab659026f2c27. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAFA2006749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056e7ad1b71d3c2148e8f438f26db0ad2ca2c14de0ba4e0553f1ed6303e68c08. 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/SE6I32231237.