The Clark Sisters are an American gospel vocal group originally consisting of 5 sisters: Jacky Clark Chisholm (born 1948), Denise "Niecy" Clark-Bradford (born 1953), Elbernita "Twinkie" Clark (born 19
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 0x5c9a7874270cbb181cb29eab61d4bf2f369096dc6ccc80f706a3d7b96af37f24. 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/53da161e-b8dc-4c58-9a54-1d90dd16d9fe.json and https://artists.proofprofile.net/proofs/artist/53da161e-b8dc-4c58-9a54-1d90dd16d9fe.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 0xf0a4c5c109b29f5c1443e2f8ddee0102e77974e622e10958ff78d546409991a0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USEG30700045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7796dea3cfd7c51f66c8396d863f50614365156f861f59f1e0f91b012b51dceb. 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/USIR29700415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d0a9dcb4fa2bf9daaf78398cd775f72efe001b2095f9b60aa460b84216be77. 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/USDJ20200379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a00ec1f62c16501659403eb77983a8cfc0925bbf0136c19295c9a626a89ce7. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USA5W1800020.
Blessed & Highly Favored (Remix) [feat. The Clark Sisters]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31c0f8e0f0f3d0d342cc96131447a0f9e18c6ceed833ff8edd7535f6df1078c. 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/USA5W1800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef48b2a4c4ea623fcd8b6333399bafc3182f073ddd1510ac86a695fab1b19af1. 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/US4DK0401087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afe79f6ebe2c28f9df47cba2528432cdec350bd3a8db65249d546fcbe894fda. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USEG30700046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a4c5c109b29f5c1443e2f8ddee0102e77974e622e10958ff78d546409991a0. 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/USEG30700045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15fdfb58032b51ff51b9a6ae4813694899295ea840f21317743aacf7fca5df2. 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/USEG30700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15fdfb58032b51ff51b9a6ae4813694899295ea840f21317743aacf7fca5df2. 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/USEG30700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a4c5c109b29f5c1443e2f8ddee0102e77974e622e10958ff78d546409991a0. 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/USEG30700045.
Encourage Yourself: The Music, The Ministry, The Message
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afe79f6ebe2c28f9df47cba2528432cdec350bd3a8db65249d546fcbe894fda. 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/USEG30700046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afe79f6ebe2c28f9df47cba2528432cdec350bd3a8db65249d546fcbe894fda. 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/USEG30700046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3156f325286bde84591be535049abf07129baa55526c4b882f64ce7f23f947. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USUG12000719.
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 0x752bf486d09ec41eb1d1747cf5f1a650655a59944ee185fce5d06cce5f36c358. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USEG30700052.