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 0x8cd88c528eb5bed854d6bbb399e4afed355bc0aa8198f60b82f0c1ed794a2b69. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd5ff1f6-b670-4f69-b7a4-4f61a892e449.json and https://artists.proofprofile.net/proofs/artist/fd5ff1f6-b670-4f69-b7a4-4f61a892e449.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 0xb8600dc41946b931e40ebf23bc70fe9516c2301b844206bfd1df3b750476b667. 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/QZW9L2277671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1258f5d615423fce890bb6d5fb3655c0ddbe4f3ab606e7945c93e9f293f75638. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US7VG2362108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10316a84bc8ee272d884f6d4193021f15a63f74e576a4b4d4da2a1b5d430236b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZ5AB2389695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9996ba4776cd29ed5470c96f5c43caaf8a29a3163dab83ff6e59cd92bb8d9974. 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/INSB92300449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a4827793063d26584e9f472c2f51de9b741051182868c31cfafd624d04a126. 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/INU252310518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b5e97dfd64ee8d082e0f4b7f3d3800b1b2038176858898a0787c0fbb21c5b2. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/IND832303184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540087ff7c08e1eca2eae16b40eadcfa3e28ee7aebfee9cd998dea5ec36a6978. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/INSB92300670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129ea9c0b8f83fe831e37c4b10a59c8da2d26c4f97f0b9a50cd15ca0bfa6516d. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/INU252310977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d8104163fe099d25020bec982f4ffe556876f4b43186080919881e1f32322d. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:04:37Z), 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/INSB92300783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3edd19df9cd65a198a88500901e8b68a40ffc785995d936b41772339782faab. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:36:52Z), 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/INSB92300800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296acb100227012f5066cfd8cea3176fb5c24454ca10e837035f59f51a77d9e7. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/INN632300544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e807ec056924e342dceb2b95ad50d83431f3e99e8fba20ad737587e56fc247. 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/INZ142300186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc620dff50e971c214d49e96cae6a9d3a321736b8190cc1e18b7a94109915d160. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:36:53Z), 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/INU252311594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55b21f216aae9205233c9238aba114581ee5126a8f0c4ddbf23639cb458f627. 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/IND832400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81d207f010fd253f069872b068e120e0891735dad24f749f3297fce046dfded. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZPYN2385767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb43383f926b9456f3fcab62d1afdfac4568dce616d6e059696f2eee4db03486. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/INN632300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0133daff44999ab403694e033eb67ab3f134859a6367c307893ac58163b84c. 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/INZ142300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891dbe3a8aa5bec3a95bd7ea6ed87ae95be25173bfe1f61bcadd69939ec813d0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:03:39Z), 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/INM8T2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5775dbd9a855c560d65d8167de1014d6001eb6dd63833b3456061921c021e978. 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/IND832400341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b452050b8b0a68f6fa67775304ea61cf29a76bd3ca1c63a6af6e84fdadf83eb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/INSB92400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d9fd0811584c17fc4228a92b60a34034368db8fc359a16cd77aede33f7afa3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/INSB92400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c31de72ceca19e0cc23316a27200298ee9e27167a7586d9598643d86ede064. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:05:34Z), 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/INN632400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969139199936cf459016549608ca3efb8fed1e578fc42662bf6f7a1447b829f4. 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/INSB92400512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11c42183e6137afe6538ce1f472c09f834071bc8a6e4448ef7259c4f6e17254. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/INU252416448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737597f5bedd1c34dc36967ef851b6ab9d1b8201b2cd0346a31ca74fef1fee4c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:29:46Z), 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/FR10S2574805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab7668e96e75545e1551950afb7bf85c750f1a886cb3254962a700e1dc36ceb. 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/INU252518389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae21289a34148f85d0015aa5256456c5211fadba8eb6d52322ec976d1e95dab. 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/INT802201976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704ecd1b84f35d2f252c1d99670bbdba1124f04be6a0ed46c65a3d608767947d. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:45:30Z), 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/INSB92500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf306a17e171cc3aa3770055257bcfe756ca3f2f252e4d431ece120490897c17e. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/INSB92500214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3ab26bce5fb6cc27c7cb6457a67bd9e2d102d59eec53f0be00a9b2f744c535. 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/INSH32401095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022e361bc4a4a617d50692717f2daffc45be717190e0b18024c3ae9bfabd577b. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:00:50Z), 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/FRX282566795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1096a29c7e100766be1ab42c71ed4d08fc65945b5c768816aa004403f9639410. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:33:36Z), 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/INR952500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0bd22f7f360cdbc777b1f083c5292db4622b5e64e909ab391efff44a200453. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCAJX2540005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b70c97cda6c28ee8cd0bf4c9193129deb550e0a16d23e87e2b0682cc4c287c. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:26:56Z), 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/ING212531637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b7653263fb9c7bc700e92678b07b561ccdc0598d3b39de60f6f60b1e05f147. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/INSB92500598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fe25803f0b285085adf08519a3f2c61bffed3e8bd00dd87eb3290bdeaf4c3c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/INT982535046.