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 0xcc0e6903487348a0152bbf7be8ad14e27895c0ee21e965d59e0e64a5eb01a7e8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d09ae95-1e2e-452d-824d-7a5709ec98f8.json and https://artists.proofprofile.net/proofs/artist/1d09ae95-1e2e-452d-824d-7a5709ec98f8.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 0xff45d148516eb9bd8bb4bc0d9fb545bcf0534eeb1c548a1dbf5bc7a7f8966102. 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/TCAJX2556143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc096e8796a279fa217753e608f523c345e4d00734d561aecfd421aeb8f11f8a4. 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/TCAJX2556148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb5f1bedcd718076a422ddcb7108ee583cde0412d795f8ee9d75ec8ae038f09. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCAJX2556151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae91d68134c8e086c0f8495b146bd3f48349e600fcaab2ff9e684fb488daeb83. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAJX2556156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5874769cce0047b6d166391cb4ec5e726e031865cf55a32ed6e8557969792bc3. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/TCAJX2556157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6fd22f252795c4b00970ea7f47db6a4a7a6728a03f9f32ae3421c90681f949. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAJX2556158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5764d2d21ede9d9f6713795ff358f04af91afba5e02081ac407f81694fc65745. 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/TCAJX2556160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe354360cf7915ca73b3300f93433cfa9ccf65cc24462b56fd0f35a997dd719. 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/TCAJX2556162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd7c6e3f79dc68ab1337cee7716c0f876905fc12d35f86298c4fd4b1e635638. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAJX2556164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cb23d457a65c225a40ee44c66b6caa4108bd996ed02b30268855741690cc4e. 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/TCAJX2556165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05df44963f8023f9c3fa920e08b783291b423eaf16a194cb8b6e89fa38fc6cc9. 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/TCAJX2556167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7557f95b1a18abd6da0286b0bc6aa818d853fd5a892fb32b510e73143bad690. 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/TCAJX2556170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a3e42ebf6a36e7e8d2006d7eb97d4047e4a06649b3224d810d809c2deacbbc. 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/TCAJX2556171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955188ce885d6301b6ba37140981ce4f9aa7637fef5dbd71b5b49bc7d1fa78b9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAJX2556173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b453cbd1e683ab18f584ecf37df00e84103de9fa669dd8d14b06491ac4bf25. 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/TCAJX2574720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3505774ea56aa4fad1f2a687ff4afdec790edc161e3604db965c66792054bd2. 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/TCAJX2574726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bb486ce357a8d0dc43af400d40a1c6fbea6691d9c4716adb3e84104675e07c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TCAJX2574729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439075ccc9e363f8e5765af2f4366697f02f3ec0bd259806567888ee9bdda30c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:57:58Z), 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/TCAJX2574733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741d7c75166963be6ab879fd2c28eea5cabd72ea6b6c96121a89c1df9dfdf408. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:38:19Z), 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/TCAJX2574735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd629d503d67365b0ca8eb755e930897316e848ccf8c8704dbdddb0ca8566dd. 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/TCAJX2574741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6eba1a4232da829d6f6a33d731216949d151ffc6705a2ad4d5d9464538fea39. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAJX2574746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361520b80388577ecce359f247aeaad8ef8a7094c0ebfe892d56f73ba80b2c8e. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:17:16Z), 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/TCAJX2574164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb635981434009063695d6f364b5371690ef8e1d6963ec485f926b876278030. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:25:40Z), 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/TCAJX2574180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d770f56e0029f7e4f01d541d22edae033e0ddfc61060677fb36de5917a8e2a. 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/TCAJX2574184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062ab0719d5ab30a797a88018c101b3437affa3ea2fa711d8cf76bbf234bd01d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAJX2574201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2728458a76cf13996c72c89984c853afb996167d63f04bb3b67be1a4b2819518. 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/TCAJX2574204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de5806fdbe44c9ce46df47688a7c7a93d10bf5ded7ebfc501c270576a65faa8. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:26:43Z), 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/TCAJX2574214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b21df336abf5fe14ad9598fae423c8a6173f93dbe94a33f2500e385bba4a309. 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/TCAJX2585612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045b06b9cc0f2024b91c25d9183cd4f1f0d832e5fddcf034232f60f556f024e2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:52:42Z), 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/TCAJX2585618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9fb3e4d5a9e1f64ab680f8c639be33816fc5f699ab1775664c2337cf75444e. 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/TCAJX2585620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aae7acacffc6bca3d024926479ebbdac85d8be8f218e62cd3def6915b49a30d. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:31:17Z), 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/TCAJX2585621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc57e3002c8044460a329ef8d7ce576613df063fa860fda838ce32d203c5c44. 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/TCAJX2585623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770b042a2b42920871781a2fbf105c95b7bc1a8bdc170498870ae19759249406. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/TCAJX2585625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14955bf2fb9d16a9530a70a89cdeeb5cd98bb1bef29a942a7c70f9374947c3b. 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/TCAJY2505899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b9e42c50e31bff40fb1b5005ee99940afd02a3b5759bdd54c4d1604ba95479. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:30:28Z), 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/TCAJY2505911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51acead9bceae3e88aa039a1b5c42a31df1101a13c809fe741eb6fe0028b620. 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/TCAJY2506206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde87ccfceaf954f7b88814c8903af23b2df0f83dc2e1bc9e33cd98c0d44df39. 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/TCAJY2506214.