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 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 0xf2a1ad4df5b1ab8abe4defc17d4ff7fb68c7915a2c60d7b7c8a10260858e68c0. 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/2002efb0-4027-4c81-921b-276a14ad8bed.json and https://artists.proofprofile.net/proofs/artist/2002efb0-4027-4c81-921b-276a14ad8bed.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 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 0x6c88845a475eb65c9645d45740213aa105c6c3b5a0eeaa385293f43dade763f9. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/USCGH1528281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7a58c098b2cb658d39f0a5996dacd2fb3b96b766480068931c4330538ec2e2. 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/USHM21690668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b06b212e968bce2d74d39dae5f9e230b0cbb7be35e17dc863a28ee5784daf7. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USHM21690676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9fa56cf6cc45b22aabda03a174fb01146ce728966cfbe7fb27fa9bfe863ca5. 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/TCADU1800206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95eb236da72ec086303cf913d0011f2e9cb4eda07f68002ef805eb23cc80339b. 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/TCADU1800216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb7058f4d0f02d45a96c6b8c6e75ef87eaef17afa94d7570c536d82ce26d321. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/TCADU1800220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5840533cbc42f031ee26ada443bfce5962f2e10b9e02c698901dad0c1ffb92ad. 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/TCADU1800223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c0c4c4b194430c1617c4e757e45d97f7e7569bb3d19d1d1f5697af46ea3f04. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/TCADU1800229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363a5ac3f89e1eec54ca893b0c3d9ef27e670fa56cc17f7b49df4c09a626db81. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/TCADU1800237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f6e97ab07445548a74e827e95c8ef4884ac6e6212c9b8ca9e4d2b1199a75da. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCADU1800239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e26eeb44689b670cc736386fa6918f531d5a980d29014aba2aa12ececb50fbe. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCADU1800241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cca3de9ffca8e5a615e19cb7a0c5ff8420b3632659aea1f08a7cbd00274a3c. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/TCAED1976195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32608d7c89b2337d536f8de646e010d1058b1d90982459652cdf3078b88a40b. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/TCAED1976201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa4a601ef1747892434ebada7456c65fc43c510cad96e346ca4eacc0858e33c. 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/QZMZ92088954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246ca7e11ad2b41ed39db6fbedd56a5d3565d1ac48fd79305428156d259016f6. 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/QZMZ92088957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4d599cca3a9d054404147abac63f7380163daa334f22b1ee730870cadc5f75. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QZMZ92088958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe95b66dc93ad46789ecfb33cf4a0c71fa1ca743c643ed201b4063f0f8f59150. 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/QZMZ92088959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8385674f2f089297ba6b22b9128e19ebca9cbff6b7badca6805fa81b627b9ec4. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZMZ92088964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c85fca20aba09c3af94e33936c16dd80a18d4abd3a00735daea72ef0e1cecf. 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/USL4Q2378601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb43ea1a2fc05969a8dca3f025b8c81b910cf2d04ff13a34a464e30b1c114401. 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/USL4Q2378602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d96f6fa48160a3fa3e91f7b42ae2fd3c736e8cc254616bb6688818e082a2930. 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/USL4Q2378603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc41c8615de23c9627fd5d9dce5ff895a6d1183e7f0e4a61b2f2854baf43a5a8. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/USL4Q2378604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdbd2d8b21f865126e152f00905e37732968bff926d8fe75d97acaffb615630. 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/USL4Q2378607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc0cc60dd152af3d90bb40591f0041985ca888cfd1d91282b997af83e10ef47. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USL4Q2378609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8aeb06f3c41fdf50739750abb6c79bb0a41f2ec576f6faa2d2e95e99c7fc55b. 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/USHM82451607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9757f53ec697d7921de5e335aa4ccc9a299b11978fd679039395a1e79997ddd1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USHM82451608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d448a18aef8b31fe43a1e792160fd0554fe05a6c0e5979de0a77c1e4dfde5d. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/USL4R2493677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3ae3f8de1b74363783e40600918854fabf0d81153a5bec14dcc66d1926b346. 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/QZS7J2415925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3cfbe95cb4d9007e2f223c8432b792ab5faaf125fd27af98e2c7c1c433c57f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USCGJ2514284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d4a839801321f381410717d164ed95dbf5dafdd427ae8f2749e391c227ffcc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZQAY2535115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb30a0ce54fd68a240eeb9d1d92ff42b4979f0ad18352877cbdc811fa5277be. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTLA2525845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec5cc211296f6999825bc212bca240693583c4738c765bb1e20c8495e3b90eb. 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/QZSYP2572886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0244112c4e6c1d8f402602ba3b873322f1d205d4c27852b8fe9373d3db4453. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZSYP2538724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e998c1d154e1111d8d2470b4bc75b8c68edf07ad78f8526e5830924009a8df8. 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/USL4Q2550751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7f5f93014ffe5299039691ffefde115279280a049026f4c29e8410ea63ecf5. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USHM21784984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dab39444ea0f721f0e4a017379a2e5ff4e4e321e310c1390808da89a947701. 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/USJ3V2012514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc94ec0a9b6a8809a916c906cee270911c09c07ebadb0835f2b290f03df24358. 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/USHM92246865.
Death Eaters (feat. Lo Key, Alla Xul Elu & Demi Demaree)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e27dda49e3abd32e9cfde3010d36660c274012678749d7ffeb8b3c565b8a04. 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/USHM81730058.
The Six (feat. Boondox, Bukshot, Claas & Alla Xul Elu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280a375800ee3054b74362579708fb7153e8fbab9ff1176cf34be376c3878ba0. 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/USHM81922820.