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 0xb807c948673c3ad7cd178ec12f274d8cf2a710a40458c82eacbd4f80b06c1c34. 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/3f95cf06-df1e-4542-b3ec-3bd8c0f67fb9.json and https://artists.proofprofile.net/proofs/artist/3f95cf06-df1e-4542-b3ec-3bd8c0f67fb9.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 0x46ff1465997d655e202cf5bd09d0f4a81be91b962fcbbcecb9fe14acffc68fe4. 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/QZCE61826789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a5826d828c920ea1f2760742dea178642749d2f1e887aa5c8aedc62028d491. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZCE61826790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74570e403cb78c6b21e991d7036a21291807a0f29fc4375202a3a42706e7284a. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZCE61826792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76676b72a25c075005e711baaf339c4a327ef1524049b160c5c8f1fd49282243. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:36:22Z), 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/QZES51941693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719a5da23c82e7e444499967d0efc5f98440ef189cdc2524954c246fe85806e8. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QMAAK2003984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2003cf8b424e9e9c366ab7c28959c117a0c4ea3bdf523ad6b31d31e210f6cfac. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZHN41966623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a212cf605b46027a6a13b56569b268d3f44b95aa418f430b43950b0bbc15b6. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZFZ21933158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42811672545a5d30f7e9681e7489006e8f434b96aebe956ed0f6616864914ff2. 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/QMAAK2003985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bde1bddfabf3ffe6ed50e8a4373e022061ed66d830ea0f85a679bb60bc7fb4. 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/QMAAK2003987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae5a60f645a76fa8e1d0668b35328360d29e111a5b67e024325c81ab9abf87e. 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/QMAAK2003988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976c3ed692d5ea68a2eb0d89f69b3b45895b00b4e5ee52e784436669020bcf9c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6Q1994601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a50dce1b8616af3d0ceeffa182fbe073b51c5fea9d492649ba0af5aa4e6baff. 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/QMAAK2003989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f40b280fbc6e9e296cd68ae35bde10e33bcc559f88742949d4f29ab3afe9b2f. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QMAAK2003990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500686117c5fa684dc01227949adc641aa7167305105a124939a64587a7d3c79. 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/QZNWZ2183957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae69e30e4cfffbd3c2aa917828076cd6d2ff7e2b14b534e7df9af638424e36a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:10:23Z), 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/QZES62231737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca8ddddcf019a5988546df72589e5c808ade6e3b091f3e59629eeb235fc5e8b. 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/QZHN72247698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ced4272ce772d644ed94ad86433bde9467a18c5218c09336269fd6c8c1cce30. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QZK6G2271969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fd7ae02d7cf0f6f03cc47ded45b41a89b1ca7af21ff03858e4a15c8ce96e8a. 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/QZNWV2216981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb478cc035642fb049573f1dd459c72e81731e22444a6eddb500565335cf32b21. 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/QZMEQ2489745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12736265c9e5fea6be169fce0bee42632b2c99262db2e016b48b9444614c9b76. 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/QZMEQ2489746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896d11e9b39380c76dc1edd7f7cb9122be7dcb37a7696dfc21daf9e7263394f6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZMEQ2489747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6476453f0b70a2faa3476f756069c60088af71d8a98ab9946a2e5e038a6e33a7. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZK6J2465312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4265249706d574d6429a3b356dd47775f4bbacd613dac76f5fde79f5a219b1. 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/QZMEQ2489750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14956595471bdc1ebbf4ae67f3139306cd739e4b518a3e2c196a7460640dfd8. 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/QZMEQ2489751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e37cd733aeafae025560e54aae23808e932ba23dce9aebecb020f9d1f4ac01. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/QZES72540183.