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 0xd00ebcacb12076cf3551b34e8f18153b6ea69bd1e6340581efe4d25465b4842d. 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/f165b2d4-4d7d-4362-beee-8c32f1a86a5c.json and https://artists.proofprofile.net/proofs/artist/f165b2d4-4d7d-4362-beee-8c32f1a86a5c.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 0xdc8313bf1f99ad172b3aac9ac079cbfbf54a082692d667f40ff9020cb0b5865f. 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/FR59R1913488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aad3cabb530c3f89d6c0d51fb7e12f7389e35bd07f3d153f2b2f8b4ea17eeb8. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FR59R1913490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d95c573ab42397233c9316deccff11a70da4c5257a4a196a09ce899d9b5aa2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR59R1913491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a659971bcfc68ac432c8d6b10d8168aa2347db3755e9aa38446a31c355a9315. 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/FR59R1913492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02dce95b6d1ca5ba064542bf6d6c3d385af2934f78b1563bb1c897bcdedacf72. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/FR59R1913493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6180b47463c4c7751a0f18906eda35adfc691a051e8b67285062bd809e9145. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:02:20Z), 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/FR59R1913494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc823faf37185f82e810b6822cc7758442e2d494654f1ff552f3f334475e944. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:46:28Z), 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/FR59R1913497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea852d1b145d17c54f8cb05755865d6e244591ab14b44d7aed67d825b4bafbf. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:55:49Z), 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/FR59R1913498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15467ad6825eb16cf913859686a2d7c72ce82cab1c38a54280d9cd58e941aa1b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FR59R1913500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa0566b8496b5c509d600fdb100075f9572e08570b8eb8a867733487dabee6f. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:23:14Z), 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/FR59R1913504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5750c3e5f4d869558a4086b1155655f3a90283efcc3a7e09ee6f79a1e644159b. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:02:39Z), 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/FR59R1913505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec13de6bb669b950accd35bb0c43d2919c79fb1664f2e037191f7554667aca0. 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/FR59R1913506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23702bc349027fdcf5b84df3d5f7d136ba61ec0e8ec9a7e1551e8a5b6dd74e0. 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/FR59R1913508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50adacc02968bff8231bb7be2c3ac646d7b74f768cdc5e2768eee7bc2d4273b9. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/FR59R1913509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969aa85a92a20f3b741c46a40004a8ea50d38a2b9b595c47cc868db9ef17e3e7. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/FR59R1913510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb450192537258f589d9417c574cb0a8c639e0e79f11f9e83bfffe47534cc839. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FR59R1913511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6de82f068786627450242dcaade2f5da8f8f3cdb451615a9962c0085ded9e2. 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/FR59R1913512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0a24b4e14bed40c8e6e2fa8318fa2affb16e8d80091155d73385f2cfd3bcda. 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/FR59R1913515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a858346f0e6701a1e5d2673f55d8f190aedfe9e69122589d36b94e7962fb42b. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR59R1913516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0855e800a9853a0b6b73d73353ae579a28b4e4ef9eb9c962a9d7e7d44255a8. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR59R1910666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696c21eb5f8b1f46f88e9a135a191ecbb52a9b9370439432f37a1716c862e1ca. 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/FR59R1910667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e214c77c64f4c1ff9ea2a39ebaa454869138dc2315950269272528a3b1d74b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR59R1910670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd844c15ac5fc15ea01faa0262abfd496d8451ae68b2a90d658545965266cebaa. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FR59R1910671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621ba6d76f44f3c6441e8d2bda066f14439bcac15613505ef14980774f5753e4. 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/FR59R1910679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b77d9e345f375a61bd315e98972d1e2e0c1415cd4c602f90588a82558b42ff1. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/FR59R1913456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb385636c50f5e4e41c449f1f5218f9492fd93aad98e50fc9082169ddf7f9d258. 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/FR59R1913465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2100b4406efa3961a9a9ae52fae45223f508bbf52bbbcc293fa4eea350dcc991. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/FR59R1913432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13ffbb114a585f2a388eb19d9733c70ab721c12652848f56b2823e0fb59d8f4. 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/FR10S2093031.
Українські застольні пісні. Стіл восьмий
Українські застольні пісні. Стіл дев'ятий
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181924461ff4e4e51815adddda09bbf9b5a2bd36315195b6e7084b1a09febe53. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:31:01Z), 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/FR2X42063323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8656b2f6a9cea187e09de174599174bc48a1190e0fb4588fff2266146e834f5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX282065809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc991dd1730dbb845ca60c062cb248958a29ab83fa55e808dddcb356a35ce5b14. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:25:37Z), 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/FRX282065811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf907af037fca2085eac58446b2aab9ed0389c70d03ac622a116f1a5b0aaacb7e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FRX202106202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6e24b29cd71292cfba3fb3e9564c91ba392d5a746eb999169f97faa3ec3b0a. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FRX282109678.