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 0x2625651a10057bb42303e39b6b753b3ef16ecd456a143eb61494c15aa29a6f39. 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/b19856e3-5738-49c3-bd27-7ffe99b16a8e.json and https://artists.proofprofile.net/proofs/artist/b19856e3-5738-49c3-bd27-7ffe99b16a8e.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 0x472db245d388c2e294518c503a0f333cb9f0fe5803acb7f90e271c6c59616bd5. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:26:23Z), 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/QZDA61848568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583b34bceac9a1d32740a287fc6b787b21eae3dc8d104beebdc32f5a76ee6585. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:41:33Z), 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/QZDA61848572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc962695e702a218d029b8d2e326814c8cadcd8d111634fecfe82d639302eeb7c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/FIMRR1400557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75aa3c840ced5c12199ea1dacad7480a8dd91df52b5fe3c1cb89a8dd2cb025d2. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FIMRR1400561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa7eff87360816d7f17fdd0ccfae85d100dafc2427afa83433651e5fad8009b. 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/FIMRR1400563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee241cf464636b78290ae2533331ddc002286e5e0f16c9d1b41d8b4ff9883d01. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FIMRR1400565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857777ee46d780fefaa959237ee93ec12a6676ab16a9c58afc4f4dfc8e9fe772. 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/QM4DW1805271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f70b56b7dba6bb4a1bf35fdeb018dc207272cecfae88b5fa5cd7b904669a00. 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/QM4DW1805272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffa6d3ce66d0321db59a52136e4dce4f11eed29485c6a78886a1d1397489cb8. 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/QZDA71802917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfc16d5575ffdb666d3be8f479b00ca8541f442a2a64d81d736bba82cd8ed00. 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/QZDA71802920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbeb961d51778981713b68e87e8ac243940ace84cc4669f09a6b47b4cacb894. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN51961842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbeb961d51778981713b68e87e8ac243940ace84cc4669f09a6b47b4cacb894. 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/QZHN51961842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b19dcd5c3d6c8bcec7a198ede031cf40a230b402d360c5ad5e6c51cd90112c. 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/QZDA41875302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e99b476cdd8d30cc4ada164ce1370c2f47ba6fca55fe4c8410bc32b78cd7285. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM4DW1815972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12168907d48938eb3eb77f3720eb45c249929706f9ffe26dd76a3bf723166b46. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZDA41874110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0217250042c5252a8d1137c7a38447b0aad19a4b92801d1bb542b3a0b58e5fcc. 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/SEYOK2410007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8690ad959f8e765416359b9896426ada18ea01502640f8e57ffc3894e7d53aac. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/UST8K1867383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa068ce0f409bf7c99e3c247ea4fa17fb42a1dc3ac0eec47cd9c0eaa50d338b. 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/QZES71965157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87ea87ac755ee07e338dd40b00942896458e41fad3e93798667ca2100dceced. 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/SEYOK2019832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2076ecba644f1cf87b2c825f277ab9e72ec50626ac54911fbae3b8a172cdba. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:02:46Z), 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/SEYOK2100964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fde9efa5224659dd4d0db2f93cd9dd7a5f88a08c6f0bc4efc29543bf7c9839. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:16:58Z), 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/SEYOK2110117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b507188e6893c53ca0c97ce173a0b407988bf711384f91502ebe2ba95a2d753. 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/SEYOK2125522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ec781480dfe53d4c2c357edb90ec7383017e72134953633f0e1629956f67f8. 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/SEYOK2149009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcac200fffc37fa250b2f8d32592248ba9727c885673d1f16b6a9261b0f5196. 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/SEYOK2149013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d75179ddc147842eef843a2275457f2f79c7f331216f863fd62d1b4f1c9b28. 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/SEYOK2149014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e601116df6e741b532833179cc35cf5cce85e39fd28895e9bb0f0d569443034. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/SEYOK2149015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bafe52deb853574b6f36c20437d54a3ea7fbbf6f13922d9ce8226000bf79f3. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/SEYOK2201719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecadad81b871548d77de00cf8007796edba9f27787714bb8c79fe648c3d5fe0. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/SEYOK2220886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de93f47758d9bb91dbba6103152bc17a35c4a93e7d384e78ed6c849ba7377cc. 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/SEYOK2232377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6746e11e756bb1469981d6583a9e4a19fda4d262123bb7c97951eff78fcd5a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SEYOK2232382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa294b7c7654d49b5adbd1df8b638dd289f31ffde349f1d573549d0b696db795. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/SEYOK2331022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14e76a6780dca994605d0d8052653a9cc4f3607d2ad5104c6aca961f2411f3f. 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/SEYOK2331024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd13ffa87653cd6ba79a00d5d7cb411f0d9bf4f34c10626e625bedceb36ee2ce. 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/SEYOK2333703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a88dd98b733a0a26336185e78b130599840452256a4371efa7d8909f273943e. 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/SEYOK2400285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a36ac505a5f60bcea01ef60379a4f7e7eef0e1318900af35482217d45e88464. 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/SEYOK2332481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbe2bedb75c34c9cb48ff7d306a1ec6a0fdd09e5797e39da411d109310ee398. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:55:47Z), 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/SEYOK2336246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db6d300ee4af4a1bb1b711b348fc775abe7771fb5886e591a4efc8a12159390. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:21:31Z), 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/SEYOK2411290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87dca400a7936ed7ab5b31f9c1b3fc4d92ae1cfa6f3c1c3ae04e0371ea0731e. 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/SEYOK2421977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ed427601dc699e22dd0956194940203ca4063702d230465b8a24323cc0b368. 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/SEYOK2421978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9dc28f9a1edd1ca903e5c2e6c742849b341def40b58c1c3ab4c986ac1e7714. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SEYOK2421979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d2ca0edbdf5ad00ba66a58ecdafd9035620598d07fd0893561ce5fcbcdeead. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/SEYOK2430930.