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 0x68b0d9daab406db11117ca4526f0d914f6c2b508039ab66ed2eda12e71ed7e23. 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/18f11efc-80ec-4b71-9d19-476b21177e55.json and https://artists.proofprofile.net/proofs/artist/18f11efc-80ec-4b71-9d19-476b21177e55.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 0xea47cde1bfc6d10aff0dba3dcf54e5bca086ee9b1ae49c2ceeef165cc92e1d7a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:06:30Z), 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/USHM81323584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780a39508c80a20419036186a4fe10792461a177bce0d7554a1574a7bf31d843. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USHM81323587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f33ffdb3cee5d2efc45d781d6a71b4fd3745265328ad2e25f49750afe6a8c9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USHM81323589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf6c7a76e23e55bdbee6a0297f677b290082baefbdf75949ba029d1e172ccdb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:51:13Z), 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/USHM81331609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a15f9b64f9dc34fed4d163599c27d0abd5fdb3d402f5936682b3bcdd776afc. 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/USHM81331611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ba474db998e48c5a119d2f6a809ae97d8be58d57595192b5b696339649e2d0. 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/USHM81331599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3899c7e3d57a3aa8c520a7aafe65fe2033d584ce57a3c48e7d9bdc7ffdee5d77. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:34:14Z), 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/USHM81331601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7276e04188092cf76210776ae436d5ad4d063a89270a06003502e96de80a073. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USHM81331602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719bbf070dd5ccc35e25327b55e5bb0930b23f25d6a450f0dc3464846b39eb93. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/USHM81331603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df44550897ccbe6b3c942695729fd1d97ccd303095b28efea8b3a8450548055. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:00:13Z), 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/USHM81331604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e7c23b3866cb2dc1f950184ca58d971db1f336ca4fd407926b73297a4690c8. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/USHM81331606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97b85671c5573215f4965695bcece276ede54c25c3bd3bd1b98674550180e06. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USHM81331607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0766a4ff3d170f5cf1e4779f99a099cb7ff53747939c6f1d24253e8ef89614. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:32Z), 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/USHM81420182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13aa089cfdf714561b3bd8eb22d830cefd41affdc113c0e2f9a9bd187aa9cac8. 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/USHM81420183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4d3c42e9e70b4775344881c4d2f37ed0ecc78f8b3138f749eb96ef30a693c7. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/USHM81420185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c0074cb8755e9314b812154b6f22ed5e4c0826635cc3088eb839587d4634e7. 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/USHM81420187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe872be3a427444e3a160ba255aedf7d58f13240c6dcb767edc9bf8ec6f7793fc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:58:00Z), 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/USHM81420188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff4c4aaf53062dfa2e9eced81f1e168fe99ecd13889f25cfc826be851598653. 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/USHM81420190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999f9ffb38d253323906b840f9d5ce671260233fb67f1330b49a95f40c6d45dd. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:01:12Z), 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/USHM81420191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6394ed44ab3953b143ca502225e5b3365d531868b43c2bb4aa90645707686498. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USHM81420192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c20e368ff64b68a76df2f9c731872e693eeee35a8fb015975eaa5147eaf7795. 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/USCGJ1634764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bbbd85fb0039a9f24fd58cdecfea55ff8172d23b3a4d10055b63f5ea4c59b4. 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/USCGJ1634765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4656ad1a9e7534fad5cf6f055d4edb543d7465f91755d1f9824ece088030b368. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USCGJ1634767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd67be2bcac641454674703b6dc096364f4c64b213c00c353d7d92363bc88dfb. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:20:01Z), 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/USCGJ1634768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f88a08f02ede076e64aa3a83509e556723db67c10965e7217e84ae9138f171. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USCGJ1634769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0e1ed904409ce196607533b7a9fdb05c9378b0e2214e5015fb8e8969faffae. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USCGJ1634770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552518f1390241fc270d2ba06d601220d10db58b4a5163c1351d9f20a478dddd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ1634773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f16ff2720ea87554c0b636ac8f17e646c148da293d5e41516eafc73891840e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USDY41998294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195e10d0e46722e30999c7579fe090908840a503791acdd4fdd558e8689c9df4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USDY41998296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bee73328edb0a8a059cbe39eb75589d11f6d1bb7dc48c3c5cfeda0707fbf87. 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/QZHNB1906516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76965aed73cdc8b09674abd733c525901dfda07726f5122f264c1a8bd0865cc9. 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/QZHNB1906519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8952fe1e12a701bd0676ff1d14565872f4ea5d9a010ace9059fddf9fe7b5365b. 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/QZDQH2265368.