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 0x36631377842606c517fab8c57631eec18d7cf3f58b26ac39ec8f5997a9c6b4be. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fdffc67-dab7-4945-8e1a-f69116de4d10.json and https://artists.proofprofile.net/proofs/artist/1fdffc67-dab7-4945-8e1a-f69116de4d10.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 0x1f0b4f9854b5526239e947c2f8181177a945e1da1b94a5706b4f40d4907c2f5f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEKS81303905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8500cf52fc8be6ef059c097b32865aea4f1461d4f075ab170e50e41786e31a8a. 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/DEKS81303901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269611b385ec6ccc183301f0ce58053aa89094fbd12fc41109a858741c157762. 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/DEKS81303903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23fbea0c350c49e09eaa623f0eb9303485e95fb3e714cef0dca7a324a720f5f. 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/DEKS81303904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f74ab1e8a2137ebacc3089505f2150af744ea92586e35462b55f6811b0b9e4. 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/DEKS81303910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee18eab80c3ebc13b06ca6a4df18e17f6165e1cbcfb801d55173254ad453af6. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:01:16Z), 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/DEKS81605203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b43f548563994838749cfd536cbc3684aafb64183880145559277321360acb. 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/DEKS81605204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89360afa1a8ab0637fec22cf86c01ac97a8a9879455ebe4636b8e500d5d8d101. 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/DEKS81605208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6659193c059f6fb866676e9ca702f6507cb7d3b87e9980b127ce246f947a221c. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/DEKS81605210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39743ca923c1533382dd10ec99ceefdaa8342d21889513d24b729063aa0383c5. 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/DEKS81605211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4811afb410028c949fd7423fbb37ef93a35336245805669e3c1ae339ed178dfe. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/DEKS81806712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcff0526e62d837aab70c9309905616e1f64777de437f21220af8d47c77077f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DEQ022106231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef51be1804c3a59447cbc15278c22555ed27ae7d6b6955ad438443cc43bafd7. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/DEQ022111190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2db15ef3e6e8b843d335f5ab31672fd2ffabdc48eab1bffc5e30ed5837fc980. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:20:14Z), 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/DEQ022111192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb309886e2b2600d1e5b0a6294719419e675d70ccee97470f9748d9ebc0de1d29. 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/DGA0Q2368853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23c0b49f0313b9286428713874205f961c92e9845faf4fac056a3c3f947d9c3. 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/FR10S2431505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83b9bf82c98f76407997dcc75b1faa0839d178358d401d5f49464fa7198bccf. 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/FR10S2431514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbff16a15caabfe1062f6b943ae7e66c484dcdf19f4f38902e26875aeb9b220. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR10S2431506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83b9bf82c98f76407997dcc75b1faa0839d178358d401d5f49464fa7198bccf. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR10S2431514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e13b526c6fed6726873b239adee534655dc3d3daa329a87704b3b36b5154d08. 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/FR10S2431516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1552f1b8ef1003b9b086606b7a5fc18dff5eb90cfe01600696883b7d323b7cca. 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/FR10S2431507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2617115eec9db35fbf3d120dd04e6bbfcca2167b64edd47fbc4b4e5a3540a188. 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/FR10S2431508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87169d49841a9f8f29625cf3ade197ee19dd2a69c3da1edff34b91a6eb70b9ef. 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/FR10S2431509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87342961eaeb3e9060101c26767296ccf4e1b1503ee59f43d3855dde602844e8. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:39:48Z), 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/FR10S2431510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75e816941765473d1154246cba98bc3289d7323aa55c851ae955e64281972ad. 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/FR10S2431513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399eb504ccb3557ad07a1b6da2f4963418ffc8685a4ad0800660369e9f3c4dbf. 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/FR10S2431515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d0ed8d72ec395d27632738fb3abfc5ce0bfb3262bd60c2195401ef658cd8e2. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/DEPI82505322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e0a3dc505ea61624fd28337dbc623f7bd7dd3e41f483ba175d7d9427139186. 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/DEPI82505323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6611a8dcbc556d1c2ed4b50752478e55723369dfe6360393a3f496f00dfbb072. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:25Z), 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/DEPI82505320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d0ed8d72ec395d27632738fb3abfc5ce0bfb3262bd60c2195401ef658cd8e2. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DEPI82505322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448cfd2239b9efb18528367eea01aa8677738919c03d717b8d32bcd9f57e0af4. 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/DEPI82505324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62b500471eda3c9dd931d492819a87f3238c5a2b563919f87122971cd198893. 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/DEPI82505327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6611a8dcbc556d1c2ed4b50752478e55723369dfe6360393a3f496f00dfbb072. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:31:38Z), 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/DEPI82505320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d0ed8d72ec395d27632738fb3abfc5ce0bfb3262bd60c2195401ef658cd8e2. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:05:07Z), 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/DEPI82505322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881b377ef681082d4bf24e91a08296d1feec2b99a4d6ebbd4088775bde129a48. 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/DEPI82505331.