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 0x4cdbb76c7326465b5986411f89bb8a7771af3a17f0049113e40770e386e1909f. 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/60cbd44e-1f4b-41da-ac02-64c0a8577c67.json and https://artists.proofprofile.net/proofs/artist/60cbd44e-1f4b-41da-ac02-64c0a8577c67.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 0xc4107858de1c5c6087dfc1d56999113336b36f9449cce60092f2e86cb76b434d. 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/QZK6J2247053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cda5c09b663ca92fb804feb79be8959acfdc18ef4be4f82fb999712ffa76c5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:43Z), 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/QZK6J2251298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e55c37d3bd7d00106086706cb9559095e3c71b2f555cc610ee5b477f0d4286. 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/QZK6J2251301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee59c62e2118480d3c4128435d04b1a167cafddb484f0d1397cdf87acec5e499. 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/QZK6J2251302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5685356cd45af88f5750fb37427a1c329cc4ce42128a7e77b42124cae567c8bc. 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/QZK6J2251303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9d3b89d4f891d4f61f6b19da848ac95757cacfd983cd7b737a36d314dc06a6. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:26:31Z), 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/QZK6J2251306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53829cfbe6f25a27016a9cbd0a9ca753a6a8aa973b6808706f78b34f0e318d20. 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/QZK6J2251308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e6ddf021c7b3386a7cf4cf071f878bc6903f4f0a8ebd281550f7a3f74f4fd4. 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/QZK6J2244652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fc6b1ba8640e905d3b00930b187f8beeab742eb08c1c430f19769d2894a445. 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/QZK6J2244654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53ddb281ee31c2f477f9ffe8b69d792d50ef83d5c876d1935fd186d6771c1aa. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:26:42Z), 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/QZK6J2244655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb57639c6944905e4d00e381a50f074251e949a5ffc0ae5cdc91b6815e40f1e1. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZK6J2244656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1670c5853bc7d298c30445ed9f757c80e6e12fc2b0d6ab7d722eb7aff55b3734. 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/FR2X41950256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6a96254f7c7bd56bb3d1a655b6ae76cf5ca51b7231216c6219e8fb2de2baa1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR2X41950259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af02de13244e3e56d995a638e5acecaddba25370a265f8fee66ec56bff9e60d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:59:04Z), 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/FR2X41950260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e355d2a8f9d2314104813868aba76edc4a9d7613c9f3bb8148c4f632f84d40c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:28:48Z), 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/FR2X41950263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645d7dd8c211c975c9a0b193da510318d48bc16af1f167018df5f2eb8fa7082e. 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/FR2X41950245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46943e0216a5f7b3c76e117845ac95f1c619716218ac712912fa81eb22dfc3e. 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/FR2X41950250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2607a888d058a43a0c4eb4e1e6402150cadedaaba9f24d317ba944e4798fe4b3. 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/FR2X41950254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da35aded10a56d6d6565e12c440015be4280535a8b7f9106e12a985b4723c94. 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/FR2X41965784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde61d2b4b89a81bdbcc4e8afd15f4c47b2afd108b8149dc96ffdb70a5abfcdf0. 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/FR2X41965786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055c932a9bd18e947a84b4f46937f0b271a8875706b66c9c87fcbdc623405bab. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/FR2X41965793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d72e915f1efbe9d517b65417212751f90a74caef71c8af42d52a9880ab4a9fb. 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/FR2X41965794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070c204a908a2388616852c9b52c0e222ed294694d9b25c3415674bc7198e571. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR2X41965800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6681122d09097ec90c57b71de6edbd81964a910be97554fb03d453d6d2348abc. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/FR2X41990824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68b6e406c9c9430deac845df52a0723b49941ad49d920db0fa0787371b94e89. 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/FR59R1927323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc1a8103a4ee07359e59c6b2df8e5192b06bd090af83214282c31cce8bdfe1b. 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/FR59R1977185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe532fcc1e4fe67120de6711ac904a8a3ba44a2380641e20412e52b131a183b51. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:15:33Z), 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/FR59R1997814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b12c04dab0e8714d4f169ddfd27f7b3ce200009fabf42ecc4ec21e2697a734. 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/FR96X1980537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12614591e43c7682dccb36b44164e9f8e1428ce50028c84b914bc47cc1c85447. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:56:30Z), 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/FR96X1984317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e54b3b0a1c3990c6a90d616fb17d83b21d2a3f08bb47c3dcc074b2bb603512d. 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/FRX201918816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cf921c0512ac42749af4dde1d9a724dd0090438141f0dfcb5cacd0da4be837. 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/FRX281988597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4354b7d84bf38076462cc5d43c608adfd0cbfbe2eb49c40d77639de648d20a7b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:28:14Z), 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/FR2X42129692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d89a35710cbe77911f951b45ff7a45b416504ca1824693c957e33c548bfca9f. 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/FRX282161275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082a239c582ea3f4091be99414be532eb82c5b8353acfeb8a3688dc524bfbdcc. 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/FR2X42279238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca10df487d4d9c900bf0e95f2f2c1eeef2d2cb829795feb2036a5782f4b4bab. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:39:05Z), 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/FR96X2286835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8b069dbfd7da71492625c2ef86d5f993bc0c2180b17180383ff298e4238389. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX282212727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d17f8a9072bd36fd26e2ea1000845653c620401d968a91ac9bd20187e7b41d. 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/FRX202355936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d6f6b221c60d23eb51ac522d4ffee027cb935ad6cd4b545d8ab53a2d7342d8. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:40:12Z), 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/FRX282371369.