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 0x455e9f8202278d69c6292204f977dad9a5be64034b2187577ef135bfb244e4f8. 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/44417289-1922-49a2-a5e3-01015d37053b.json and https://artists.proofprofile.net/proofs/artist/44417289-1922-49a2-a5e3-01015d37053b.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 0xee9d86330104e5e32fbab114131ea566200a7ad76cfa0403d86b0f753e534752. 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/QZTB52244665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53aadb7ed95ab896dd5c1acb5bb0f2ad9f8035d61aa70ffd73f0db86feeadf83. 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/QZTB62260569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1d94a2dac52fec492448fa23398bf9179e8edd623aa7342d5402de14e7ebe8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTBA2216096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d15b2cfac9cb3396ab97015f318527a1a287b91a406ba15350f91deb994567. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:08:26Z), 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/QZES62395597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce1e64d5d79cdcfe8d12cb7c0d514a243ac97bb5127e4848fb2633d150eeecb. 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/QZMEP2322537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0f4422545efcfdfc344b91b783ce9910d57ba48b201299ed726a2fcf10d7ec. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:26:37Z), 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/QZMEP2381601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ac821beea82e5eccea303930ff73c9459af190b17678510448edfc6c26d6e9. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZMEP2388614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78886a81ef4f1867f5c892ae500034a8a007ba923d3309a9f681da5c29a3926. 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/QZWFN2333452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a4653c37bb64516279d23752df0cddc5561143e47a7660916f0e98be7ff55a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:09:01Z), 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/QZDA42462266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d06b54059e89a1042777236a29f4e3812e81f1df562fd5734cb6b02837d3439. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZDA42482458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0678606cea61b11c27a7454afa02370a2dbb0854b2ab0c4b45e5499560da69e7. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZK6M2447945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddac1b5d4ad2d111ca688e4ff70b52e117f1fbcf8649986416cbb4fbb153d12. 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/QZK6G2458093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6fc013c7bd80d92ef605a6e5f3679b27e25d10c5ba7a09a1aad7414f9eb539. 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/QZMEM2483791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e51f3df44762c8d9f3fe33800fc42f4333b915371e2379f80e5b016a55f46f7. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZMEN2428225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cf272410e9ab4d88e1fb2199acb0394df170559afe01ec308c70ba77dce975. 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/QZNWR2462410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef1e7234727bf58bd5e46d6b96fff4766d85f5f056853915306985ba30d3e38. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZTB42427331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfb19105a72460e40041d442cbffb5571db717c4a579968dfae618c8c60b354. 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/QZTB42455429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671cf520530fdcabeede5c765efa6591a8a39abc3f118656fc3dc9e660132d86. 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/QZTB52451973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fba23b5e04a3c99bfc034bba708ad4b419ce8c1a95ad0b913e6fb070d18e3ae. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTBD2487028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69edfe24790c9b3031c2da7ddada368e87d848db19c8205211a2dafbbd0e473. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZTBE2425305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c49ca156828d75f515596e57a15af4940d83a41d2161a442bf1ba81a610e51. 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/QZWFH2488147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482e5829c531c3855f9d621d7b6b98367056ead2a13ce5da51899ea5f824d4d4. 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/QZZ792467115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9d61800041ca5debdaec725db5897881cabca8db7d0b64599251d6c1c0ef4a. 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/QZZ7L2421291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0439fc0b242c5aa8f32f89b42ed7006de453403b82a906493c2bfdcc19a8d5. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZZ7P2453707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11762e852290401b41ce37c2a7946f4f27deef2581f47afb2ced4ab4227eb048. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:38Z), 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/QZZ7Q2451567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc0a177d8340041b473d1b798f45af805aef3b0d263b8d00660f79ba235fa30. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/QZZ7U2411433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90adb0e18c5c0b32c67b81c49cefcdcdfb683d73a840acd4892bc9c24e1cf1d. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:21:46Z), 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/QZFZ72545472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9de3ed03593057f6f1ceed3ff44564da3e52a762cb6b72b7317e87af7ed03d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZDA72580568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c7b7306e99f3adc42216669c643a89059d9163754d036b7c4274bbb2ad78f5. 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/QZDA72580569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef7cf32c404df2a65677257515388ee3e1d2fc99ffb04dda7234194ba9b8b90. 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/QZES82538754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1db4585d8e5cd633f9f4ae875547e5a2cc83b5a75c7c16979ec1804619b5472. 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/QM6N22518292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f11093f147bd692e6eabe72c4db62d072ae9bffd6d21f45fd50f6819cc9db2. 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/QM6N22518293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e77639b0c84c3b619e85c2cbbed72b6da09519bf93967686228ea3083fe7c3. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:09:30Z), 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/QM6N22518294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f5e5b135a111cb5abc51589e7f28fa9c82e2d55ee4b94e3c546edb0be85f0d. 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/QM6N22518295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0527b4e138a3ccf2c01bbc52b59db92ab8016abdb979d2693f6075769a9850a8. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZZ8A2530403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ba911e6a06f05fb1868efb155009cc6cf5c12e25728f3cc83cc74880ccfcfe. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZZ8A2581796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab863d0e4346d128793f3e947b96b98d4451087184145c818080fd4a00add12. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZZ8B2554375.