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 0x6f86f0b229a30db1e4ef4d4eeeb3d42ffddc1f88a1e18aea8622e295c64dc19a. 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/4e926a53-7e01-4f28-9d7f-e092240f2a97.json and https://artists.proofprofile.net/proofs/artist/4e926a53-7e01-4f28-9d7f-e092240f2a97.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 0xcc92819733dda5b6d576f152891350c150dde21c8e92b9ee4293f0671983765d. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZ5FN1760934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d2c5bacc638a2a91ad841d0ee32689b2afd35ce4bef64675d0328581a94c52. 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/QZ5FN1760935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60234fd02cc4e9fa118c5ec9f228ba037654da3480e998817dd5b885f3c62284. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ5FN1966778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3292968bcb9dbf04501ae9b9faa9c309c7b53f4ace233e29b0399aa70134661. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ5FN1966782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4cd553db8e11820853338cc7a191d4f6f99d950f97e499647cddbd7268bead. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ5FN1966786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188c10301f95ac0b3714d551dd50a0d42c9a880c01e0844a408c98d6079ee72e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ5FN1966788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8210edaa313fdf46add084cc463c5ffe4fbcfd199c14d30b3867e0347c20dec9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ5FN1966789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8061fff0cd0b84aeef4223cd89613d3f366c170c49fa37700c936b9ecab73392. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ5FN1966790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44165c4c38bcda6fb927ebbc73104cf1a34e8be07a561618e0fe99b808649ce. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ5FN1966791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68efe52790ba4162bb16533594217f5638631c45a0d7ad7536d6aee51bc04ad8. 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/CA5KR2038395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8620bf14cfc4d3d3d3d10b41dd44ecdd20b11541ce8b767244585379df123f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/CA5KR2038396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4306f52e2ee820bc8c2f8ac52832b87d90ab526a6c985f284e76ac1f26c53075. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/CA5KR2038398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfacc8f394fb7e5561609433aec17f8a90ad8c66ad9c25c8817483cdf57d3eb. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:28:31Z), 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/CA5KR2038399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d09caefc7b3cd24a28a84d268991eeafbc557271c9e026ba73c4c96f97797d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USLZJ2139027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cefc452660d0a97e0e60f2301c6a7ae7eb9e3496a59f6c62048efd523ef408. 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/USLZJ2139075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab97279a613dc2eb2488a631c71ab382dbfaa4bdac8e56c5ff61ed56b9d23cc3. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:07:01Z), 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/USLZJ2139100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bed533a66fb49652c08d4f829ac93a21e52d0efb099ed48a8149cd3b12aac13. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBRKQ2108634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35267cb2c2626993fd7ce880971ef436f80f6757fe602e9c530053cb44a28c96. 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/CA5KR2218738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6842930651ef2d83d2fa762e1b3e422a1ac0e6ec70ad27a59bc8cf39b27c8668. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:05:05Z), 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/CA5KR2218739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb1ae90e73f54d2546cbed0324f85fae06a2e38c44272cb7337bec78169663a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/CA5KR2218741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894698bb5fe570014ab7e6188d8a3baac9ececca5fd7ec57af0b8f1f82ae4c5a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:09:50Z), 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/GBRKQ2316429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95915e88d3c208e52b8762cbd5fce33a3ac2bdd9a6854bd28ad6ab406f6c7a37. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBRKQ2311888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc87ac396d35490858e1c8d839ad9f12c1cd737448e3baf0e70ee1a88027c313. 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/GBRKQ2316440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf191608ede4d3400268a8184b433445f8eea802e71d52009c515c48c1825926c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:29:10Z), 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/GBRKQ2316441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5820ed40d8e0579ac14b64fdc5f421bb915ecea45babeea799ad8dd6c737a9. 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/GBRKQ2316444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85bcf5c44d0990398ec9e29288f0fbff94a94ca08bfbd342ec09dad9fc63459. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:58:06Z), 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/CA5KR2397930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abb3579a55aeeb6f32b36c85864d2e5c71b1195cbab9cc9335c18e2c9ad029e. 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/CA5KR2445811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bd7e16e6d1c4f464083ff4db1c1c822518da4dab1cdc0bf8790dfedc71798d. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USZXT2455287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2244c4c6863d2c42bb4cbe1eaa611831708f357fae95e73b2d3a5c5216575620. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/CA5KR2532889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe657cf0a9ff729bcaa14a791e928873c45448357144343d443621ed447adb010. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/CA5KR2532890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb631f11a35a01e8d46397dc1ae00720dea45df12277e91ebeb5301d1d08e217. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/CA5KR2532891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671d3c24b053911c56ffc122ea8ca36be7d01fef1b913fc68d739ef0ebbad0cd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CA5KR2532892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a7065547fd539b654d920ed6196f0ae7ddb173241870fa880ac433dff2140c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CA5KR2532893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0926863650e98df4c6f0de43d1957d4af177c7d31fdfb6cb0030723adc50616a. 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/CA5KR2532895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c6ea72d001dd1fcd52a559848475091b558d7aa3536002a7c343da0c43bb77. 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/CA5KR2532896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e590cb0aefa60e4a8e091de3801b85787a7e8e7ec582b86e41c92a1c080169. 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/CA5KR2532897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bdf44a74cbeda514afa5d3fc09aeeeecb6d1fa462db2526844d39eb2645718. 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/CA5KR2532898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576672555e1aa7684f417c1da5f926ec8a0223ce51f024ac2ea55d5e247b31eb. 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/CA5KR2532899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abb3579a55aeeb6f32b36c85864d2e5c71b1195cbab9cc9335c18e2c9ad029e. 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/CA5KR2445811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48689820fd4e171e3e48ed68d7619aeade7dd2adba628235fdbe22825d8d5a49. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2297288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8382dd5d1f9907ff7322db40ba3f9f282f89818350155128bfe7ea88c6b83d5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CA5KR1956956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39704113ee0f6acf0455f8ef023dc3d11f74b752ba63bbe86f9471a1e6860c8f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLZJ1821204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16a1caae639f9569b31d1eab24bddfaa2cb9c05142f576c01cc6ab99c55b442. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZMHM2015392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8382dd5d1f9907ff7322db40ba3f9f282f89818350155128bfe7ea88c6b83d5. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/CA5KR1956956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5760f921d039845ca8c6ddfb19c23cfc71dcdf38710cf38826975d8f5b60bef. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/QZWDD2275831.
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 0xdced2396ce087655558ff27caa53bffea586027e1033e86a346960efe86814d3. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USLZJ2098205.