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 0xea6afede4ec0436c997205308f6bbb82a50c4517a191a24d675f1de82fc33134. 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/a0cbe83b-ffda-448f-a0ce-46d83ef2899f.json and https://artists.proofprofile.net/proofs/artist/a0cbe83b-ffda-448f-a0ce-46d83ef2899f.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 0x61dfa600aa66a1cfdff59ea3ef34cfdf850b2d6090c6721c2cbcf6f249e92142. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:31:47Z), 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/QZGLS2104407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaf254e6634340268d69e758c5ea3b9c7de2a34793937305c22aaee7e7dfa6c. 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/QZGLS2104410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e91c859d87aff99d91151638c5b5a2e3d72940b0409b5e77aefbb14ab9873e. 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/QZGLS2104421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dda457c24bd30cfca875528195a2466dafaa2f1f2f82db68eda83c82a7ade9b. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/TCADN1875232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1af7ababee31c58c80c694074c9276494e72928f31c1bb6b70b99c12edc2287. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCABK1292451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c51f33c8337ceb77bf9a58d14a5b00d49f3ca7ba0660a4cb4d2613a193bf55. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCABK1292464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fba05ca66ac640a610c885339c7febe928d550f4e49c867eeb39ab685f9202. 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/TCABK1292469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05cdd0c0aba3300d0b23d5eac16e823ea3bb2732fe2c14be775d45f5c788bbd. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCABK1292667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19903725d3a66cd2dfb6b08cffbecb050887d447bfb82bc0874db8b492f1ced3. 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/TCABK1292683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd733d2e47ed5320ba17491bbffdaf1df73338f96c299627a9f52622df6ad183f. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCABK1292686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e91bbf4eef1f87c72f212fe5d62c5534d3468358d35133757c462547f98247. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADT1897375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ab76c40f7b06c39ba0be051a280af1c1c0bae253cb679950445b4f91a21874. 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/TCADT1897695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca52ad54f2f1112643bb6d3e7621671c7490633c7104584d41873970157b302. 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/TCADT1897697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9eade450b7fa54b97c292fccaf80980e3a274309137c8df8fac7f107c9e2eef. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCADT1897698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f412d6d84c5e39bec404dfed53f183e4bb38acee786a7077f5e9b44db652f68. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCADT1897699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d9b3d056bc32185e235fc3f60879239412aa30a902a1d93c8c44d804f6fe31. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCADT1897700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d8e486a594b109ae66b2afa5a06affbc57c442115a2482571a4440e0d643c3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCADT1897704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0962dacf1463bad4f452fe1fbad721a10af54c1cd753a542c9db8d30636820. 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/TCADT1897706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c0e7c9da154b57e6a62ba5d3e602272214ee574f233aa95333f5e28d705e62. 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/TCADT1897707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0ef5cb865af39b7d8df8f9ecde9d7fb8b78b4464fe4cd8f20f312e4adcccc1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCADT1897708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a1f49248bad6cc30281c159f90220af4b3ef395ec3dae731150296829a482e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADT1897710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183054545e5e468cc602604a78ffdfb123a421c782302b570b5ec6a49037dac9. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/TCADT1897711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343b62e0368ab54a48db446ad0cc3e5cec53c39d967b65e68fc3ae944e43c582. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCADT1897712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668f09aef3777d38631c8d65a3ae3da38e9c8dcd49c36156bbefb3d353822a1c. 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/TCADT1897714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85a71e3bd54e9a213c323aff99f632125e85bf32533beb88801daa236989a70. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:17:42Z), 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/TCAEF1977579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f72af76e34a0b3895f6d5f24ea955066e0bc610981d92e70ea8b6af51f07ce7. 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/TCAEF1977594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296d55e4e47d72d2fede23377b1b8378f49a315eeedfb936a69af3375aa0372c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZGLM2199047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4d35e200a294cc36e051a056d5e43b329d8ea3e679e781705282286d31cb19. 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/QZHZ42163597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eada8d1ddfc36040d76145fdfc28bc85af15d989864ec8c37007d906e6fbaae. 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/US7VG2224418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82ca480163ae3da0aa6b608935620141b487e2d8f64d24680c3c65d41307d5e. 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/QZHZ62116544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ba7861eb2556f68edd6fe189cc6f241fee95606921bb539198183a31e1c48b. 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/US7VG2224425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037b6ad4557f4db6dce5da9a00a16dc3dd2b6b543a9362827e08d8ad241be016. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZNJY2131956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4974666127f3c96b74d21243afd2f974f8636861733d3535fb569347411b52bc. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/US7VG2224427.
Esta Vida Me Encanta Remix (feat. Smoky, MC Davo, T-Killa, Don Aero, Tanke, Little el Crack, Big Metra, Santa RM, Zimple & DJ Maxo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e47c1e92ea6509e47996f0dac0209fae1a455fb9d3acd88cff2b1705c604ea4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1023091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c2ce2d7715e96df413068a32b6cc109218d30f275e7bb91e05ff0811c75388. 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/USDHM1617161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9cac41fb570bcac7bde8ba886805636063a04cb2770600bbd9c456c5986220. 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/USDHM1412141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03de3fa5b42504bbf636dea4affe90152b1f51d6e91255f42588bfac18153bd3. 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/US7VG1713814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0382637728e5c654f99bc0a7fc5f247ed9cd633bed0d25ae786eb4775b4a1915. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MXUM72102779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0382637728e5c654f99bc0a7fc5f247ed9cd633bed0d25ae786eb4775b4a1915. 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/MXUM72102779.
Tankehology Mexamafia: Xx Años de Puro Hardcore Puro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc91c0808bc336f3ef128c39cc02f02c51eed47f898760c44d19c0501cf4f53. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9N2205488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc215e275fdcb8d2eb3dc0c65377b7518cd89b90d7376391c091fcb33e9277f26. 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/QZNJY2431663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc215e275fdcb8d2eb3dc0c65377b7518cd89b90d7376391c091fcb33e9277f26. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJY2431663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22bac39ad6fc9287f6ed627e46e3d8f379020bb2f21ba1409db3b52ebb67a68. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZDFP2052278.
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