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 0xc57737757f2373744b587da159e5a3e8b5a40471f82a04248e3620c09740b577. 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/fe59a8ef-1842-407b-a7c5-544b043a1d57.json and https://artists.proofprofile.net/proofs/artist/fe59a8ef-1842-407b-a7c5-544b043a1d57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Ethiopian Millennium Collection - Dance
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 0x21a8718feb4413ca9a93efef1927825a68c51c0a1152b30a2913e59d7d3f0807. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USX9P0727708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12dba4309fbc4075db1b81977c5543d5161e9d83aa45d33753b3296be383912. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/USX9P0727711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a23e71d6cef3c1c7198201cfed5bc90db0e127196d3ed2da64d6078dbd4796e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USX9P0727713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc7b91ce9cebf690faa5a7810d5e5e138ff0fa6072094fb51def6c562075f24. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USX9P0727715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d3f17df61fb886efc7a8e98ce9b07d3a33fb9d32130bea66682e5cdd7a5a7e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USX9P0727716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468e43ac9aeb89ca5bcafd963c8ff43faa54d3704bc621ca35e6b80c0bc9685c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USX9P0727721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdf27e8e71150d6097f3aa8c84a79b8dfac1d69a2ca7a25b87a6cf574f5c767. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USX9P0795857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55daedde614c044e3975d8d31ecca66d2cde829ca0d6fb3d35e5d59dc4b0d42b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USX9P0795858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4a9124c0321d3781882834fdc49dea944f502bff00b4e9dc53e9cf29a48b2b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USX9P0795859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51001fdd0ea50955894d33aa46da10f5180035bac63152bd4cb60fabd642540d. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:49:48Z), 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/USX9P0795860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2ea0f8fea731648ae7fe76d50c2199095c8558214802395c9483b259d4176a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USX9P0795861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f02933a4aaa0d00513210be86ce39a24833f551583a1c672a4de64dc6c20d0c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USX9P0795862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae52d8282320fbbb5bc1e566e0cddb07f4217ccd04e34bce3071487215f67db. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USX9P0795863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f0b7bd860705a8c80404d05ca0cf7223b2f3da2d04035a41f401810b6a7726. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USX9P0795864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc52f37feb6b0e6b6bc2ed017d2570337a082b591851a378d56987263f40bbda. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USX9P0795865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c6797fb6e60b85c3b9b735ed9f0ddc47a89e4216a24a0f517812687dfa8aee. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USX9P0795866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4cb75c7eaaa038cc240c357281dc6759e64a1816b2f26dd8907588e036c05d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USX9P0795868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fc22d51bb5ab14a4bc13af4e927e60d1473ef8a703fd78a93931f1915d12b8. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USX9P0795867.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c813d90e94444b7952eed6c510fcee9d31ba76489af258fa9dbe3395bcc9bd. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USX9P0795869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2b4167d42af12d8cb8978b5638b11ae69691b0f1bbd7e9d9d17a8431f1eee2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USX9P0795903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5045b235483a5d2742db77f7ac8678814b8a50973a6c59ce5b66c47687771375. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USX9P0795904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b33fa2090c71024f4d840773de035ec5ac85aae409b68b27fee8f91cb7d2096. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USX9P0795906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a41c341f70f4f8fe1578b9a580c38fd65a49aa629a57f5b2cbe57ab1484b61. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:51:04Z), 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/USX9P0795908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51fda4f8fcd9225d8bc24dccd4bfd0cbd0829b73f47d73d3d16ec35d9a9fdc5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USX9P0795911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e5abe67eee9825ff7e6e04376e2cf88e29c00695897e1fd2044782319b7451. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USX9P0795912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f2922655a69c4f50aa8f45cca13f35233a73865d3bd660cab5a5a558212b42. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USX9P0795902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dcece63de0574fda20612156205a41e83e2ad1e795a022e30c3d281ee4201e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USX9P0795905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aafa882413bb4ec1c593fd9bed99ff46c12ec49f4d666d047c2bdce50c12d35. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USX9P0795907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdae8278449bfe2bcbd01409c2868442264c53af0f1a80799e67ba2cc752d1f. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USX9P0795909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9757a50ed1a2248e7c8de26c5d5b413cf2dd837bf49013e8663b658395076e. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USX9P0795910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52638adac81a56da29c371562dbba2e3abb9fd93aa220fe14a843d892d2ec24f. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:48:23Z), 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/USX9P0794331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68f87eb4775f66231a50509e783ac455e635a2054a7b20c26cd4dce96d9b93a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USX9P0794333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0021f878a2b52d04b95db23f59b626ec532bb82e4f3d9a17c50aa62f0e19c61. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USX9P0794334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fe7a7ddc92b2423d4b3894407bafa24bfa70ad7cc3fa7e4405da31d9289e47. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USX9P0794335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f8381bea9126fe86f6192e50318dc67334daf582490e8e43bfa3397d950c11. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USX9P0794337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9fb82a0ba504c0e2b1815b9567ae0c6a5707e7981319d9c1a73a7b2fb881f3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USX9P0794338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379fcac1a60c9bcc638fc21848fff852b7f17fe522ee75b6c3752943a2684f3e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USX9P0794339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2244e54a412f6b6038ebeb3207fe5067f9f9891813086007a2788cd58feb940c. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USX9P0794332.