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 0x19d7230f6bdbcead1bfee21177dd5a551bd5359c4c0a636733232b3a4decc958. 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/c3fc0876-45e3-47ae-a766-88b8c2c61a77.json and https://artists.proofprofile.net/proofs/artist/c3fc0876-45e3-47ae-a766-88b8c2c61a77.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 0xdf98a560f3b55d33069eb722e8d16bd35a777b0a2757ae87fc61278fd95a6088. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:00Z), 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/US83Z2323979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d781df8ec9e64c63cd2362590ae72a6142adad68abb7661dc194fbf25f477d. 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/GB8KE2324478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7ffb4827146600e8ac8f9ca4323542e4f482033dd0bc9bb6ebc7ab3e894a6d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:49Z), 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/GB8KE2327779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd790ee9ccf0412257e019fdbdbae676f660415addeadf86c8ac2602ee37229fa. 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/GB8KE2329214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878b4efcab4f91dc3463de41176b883842a32b65fbf4832b261e4a0180f5619f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:13:56Z), 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/GB8KE2328452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2236e232a8a4ad0ff5410e1be9e4a3bc2775bf5a323d0cfbc1e55aecbcd7c51e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GB8KE2401233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd730f219b729df8701aa6610ee0c5f038baf85fcd10b235e001f1f6022317b3c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GB8KE2402477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115178b923dcfb0ff8372471b6b31028a0deac01dc39bed428721f4c6f34d0f3. 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/GB8KE2408362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f92bb7c2aa2f4defbff5d6d9b1b11af0da2d46dafcc0cf4ab4a1f3d7362e4d. 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/GB8KE2409679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe77b770ef10e15a0e953f0405ede5ad81854005ed44c7e41e5a7750bff0172. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:28:22Z), 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/GB8KE2409681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c23ec1a690a6fb3dc67d3eba9005c5384846c08e5e78e145f4f53fef3e3cfe. 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/GB8KE2415819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff09800077bdfc960b8a5250c5c378382dfdc6bcc32393f7b290c89a1beaff3f. 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/GB8KE2420537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373ce7378fa2472e063c20255a72353d7f5c8da5ca8b669f7ae9a09a239c9e75. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/GB8KE2423184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257af1df05706156ee675e275bde225c51eb8be98d466d8a3445f7da62ca1626. 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/GB8KE2423677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f0953b8698408a6dff95a2dac9c6d552e374a2251d2ea9738d4f8468e83146. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GB8KE2423842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2492aa67ef90c1ae2576f03e78c57670ba3e3514d9ce7af68c8a4fb0751244. 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/GB8KE2425290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f1df4474973f9ca8038201a0a939e40496f11ccbcdeef880ab7d00dd680c60. 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/GB8KE2427925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebd5f219b51bd76d064dc63d3c5f1e76cf0ae8ee50403f1b9f202b58e5c1aec. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GB8KE2428444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9338c98c44c09bb802934d9092ad022cf142cd2d4115bfdf12b92fbff6a2263. 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/GB8KE2501383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27de3053b4d3695fc3f5b7f08ba0cb833d55c35061e12dd05ccd4acb56bb31c1. 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/GB8KE2504856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31040b0198af9c9d75ccba67406a48146a3ae54dd69292041b8c0b3259ec92c. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/GB8KE2507327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62882397406a0712fba1f14efc11b34c16513489b5a2a7aa05e1439dce96e5a. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/GB8KE2509195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a04329d14f8fca3eb277a363b4089e3404ccd75c7414b5c5bca72f1fd7fbb71. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GB8KE2510795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc008dd3d9d6187c064b286aaa806b60cafc552ad6dff70a999af25df0eb87b39. 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/RUA1D2578568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbb158d76da4a95af665fe411935e9e0529226c8d73dc30fe303a4338c5f4ee. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:08:25Z), 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/GB8KE2512488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78aedefd72cceb61bc2ad3a8b307d2341b1216660c80cfaf0086ec6434d9a62. 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/GB8KE2513184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3ff59c843453902eaf445c63b11aefd67ecd45a17d7458863dee0f2d4fa3b5. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/GB8KE2513185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37712d03846e24877f06b28df25876bd2579ff0e6584273fadfc52b7652afd4a. 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/GB8KE2513499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ed652ad09ce1009066939e18f9219239c71505774f3c6fd2943ca48c67e612. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:17:54Z), 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/GB8KE2516503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb00533c2162f81fa555fc154ffe8c2ce6db20ca667ad4ac3246258e6077d027. 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/QMDA62582613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e66a79fcaa94f3e1b202be1d358a4db866a67f619f024c42174b84be2fa87f. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ESA122532334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d95261e2d042488bf9cc0b1171771632e63b8549e4ae7bd4c02db0c9eb5b96. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/ESA122541476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6d1bc21d5e6db0bdecace6e5de2c7da45aa0e54c999c195d17e9fb56e36001. 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/GB8KE2522177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ce70be4675e6af67ad2c2c091bd44f3193e9ef93f9736efee31da63decce39. 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/ESA122542667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc860b14068d14da94e18320fcc418f7ed4e7df1387f16b2b6393f396da4639. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMDA62582760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c0b96d9ad19d0d033cccc7e569dd96225db878d2d16c715a2ab1ec0433c9f5. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:23:22Z), 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/ESA122545578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ab05e19fdf43849592cf06bd19368600326537fa30ce79bdb7673a28612aac. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T16:00:43Z), 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/GB8KE2524796.