thumb|300px|Eve Tempted by the Serpent by William Blake, 1799-1800 (painted) thumb|right|220px|Temptation, by William-Adolphe Bouguereau. Temptation is a desire to engage in short-term urges for enjo
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 0x5ee967981175ab5f42e28e28a8f36aa6101f867954346af134db53638749f51a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e220272b-2f3d-4181-90a6-114b150cbda6.json and https://artists.proofprofile.net/proofs/artist/e220272b-2f3d-4181-90a6-114b150cbda6.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 0xfcc142fbbf0279880446c12682b8c59c29bdede47f038fb046553c0d3a37d0f6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:52:39Z), 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/QZK6L2364135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177f176b9e39b2193746969aa8058cbdf7172f156d41a8a480d7183b63bf4ee5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZMEN2368471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59353a5006a40967debc0addb74d796bb34816377bdd36bc9fdba94cd5481d74. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZNWQ2329383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59353a5006a40967debc0addb74d796bb34816377bdd36bc9fdba94cd5481d74. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZNWQ2329383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d18b512b6c414d79e4fbcc3fb3f372444b7cdc2e762abebbb8ae09f228685a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:52:58Z), 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/CAENV2325300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf97256946ba39e64ba94131fa5a262d9018ec04006865edb0cac1939196615. 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/QZTAZ2387009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0cd620d5afb228b2ca170a3c221a56591daf17fb9022cbdb2206157f7cb9b5. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTBD2337173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019764486767b24af3a74abe017e0c45c9338fa93879741efac921f6a6376e6c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFG2336003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019764486767b24af3a74abe017e0c45c9338fa93879741efac921f6a6376e6c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:25:07Z), 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/QZWFG2336003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeafaa8da40364bfd82dc80cd17518c169bf3e91ddf5ee82f902692c6d5c1852. 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/QZES72422708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6370dc06de04a6b046e077c35a43f934b3f98252bd5ea95460e0bfa092c0bab5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZK6M2482876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c98c49e9096e002a5c055e1bdc1b1805d5d5f6dfe3b2357932562a76edee1c. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZTB32453332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f7a4be89141d69ab9977315087372df0695e78fd6f5bb2cd7b6aadfd8a0927. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTBB2486423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe646c142ce8e9bb91f3d5ee4c49c19e09aaeb16bfc5bf0827188a541554c35a7. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZWFK2441470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49fe4e08c548da3dd9a54a982fc65cb395f861a9657a6987d5e81dc8f350e73. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZWFN2453599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dde5128ed74c2eb58aeeace2e82d90f819ad5e36bf28e43298ab518f167497. 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/QZWFS2472296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcbb71faaf6d3881dc9aa644899e0cb8b11d16815658a68a48bac11441d465f. 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/QZWFW2416547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa0354d13a2cc15c27ab6d2d8b43925564cf79aa5808931f6647b8883bed2ab. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZZ782453554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f1ba1f19af6fcbbc7dc5ebc53d59895c82da86a21bda95cb8cc080d7faf8ea. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZZ7P2459934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc8aeb92169750f22c63b65a75b16dce58322b8aa2db2dc1e5fff4e37166f71. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:35:56Z), 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/QZS7J2571112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda6f097dda714cae95166e61fafa492595a43f6d4c3cbaec626f1a3791ec18c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:27:59Z), 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/QZQAY2516101.