Earl Johnson II, better known by his stage name Earl St. Clair, is an American record producer, vocalist, and songwriter. Early life Earl St. Clair was born in Cleveland, Ohio, and grew up between th
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 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 0xd2b7861fd6761478777de9638f7c1440ae5cffa23b73ef17d9c17b008722a5eb. 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/087a758f-72a9-4f4c-8112-aacc651458eb.json and https://artists.proofprofile.net/proofs/artist/087a758f-72a9-4f4c-8112-aacc651458eb.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 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 0x41a9053d0fbcaf8b6cc0affbeb457d847f190be5fedd9ed24b36f6ce092f95d3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USUM71701252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146b8f365e0c007182c47f81d046d20a98da7ab14feb362544a7925a3ad8a85d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZHN71978841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c62de87d3d25421fcd106c7535ab5edcb21378ace3379f20603ac6cedcb9110. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZHN71978843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1802b8f2ef54aed2bece2818186a7143d87193786372aac752a2aa4e0ca9dac. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN71978844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcd0eea54293ea9f860b59eaacc00d574cc3b9f95323f814a47e088c6d68514. 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/QZHN71978846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1fefd7192925f65bf7c70e97116bc449366970e22c246e1f0d0bc21e711161. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZHN71978849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0941df0899e1d659e35a7008562eed1d17f700e8241b2ffb1e9d9e5d6bd0ccd2. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZMEN2046637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987dd7762f0ba5c2907649c087ed154cb51cad27431fd45d0612e18e8494db3f. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZMEN2046638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae4d53ecbc060e38f69c53a54115d3f63beea3def83bdf32ec98e89d731e920. 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/QZMEN2046639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b2d6f065ac41ea342a97f7f9c3b96b83465ef3ce302f75ac61685016a4d308. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZMEN2046640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343725a7abb209cd59bc33ffaec08ed8125db55ad22b2bd84c9cf710a4af903e. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZMEN2046641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc904ef6d57c57e86ac7c714b68a72a5b9df0ae5d15781cb8bcd4e96357b79d25. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZMEN2046643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13b90241d81d18d5aa7f2bb52408ee7669b9dbadab7f0d282581184d67abd29. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZZ7R2431917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7158dfee5ffa3e5503241aa1e8558eb3ac47cfb0fdd49364de20f51bdfff1424. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLZ8W2300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6412e2bb1e38322c0acce36d1c6ee6f6be8fe32dd3ac7a3b52e9d785b17e1bf5. 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/USUM72100704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe73b6aa866b181d602a2ecc68e3eb7231f2319a0606d58bb5dd1fd17f4c718b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLH2L2400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41625e361509b5839adc3205c4ce4991c168305715bd36c6b7c7cad92023a744. 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/USUM71701256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab4baa7d49abce8656169e6cb4e0baad44594847369874547ab440d903beff9. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/USUM71603336.