Jay Black (born David Blatt; November 2, 1938 – October 22, 2021) was an American singer whose height of fame came in the 1960s when he was the lead singer of the vocal group Jay and the Americans. 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9412d5ac57367b49577c51c1f5b7ef26520f01bee06d50f18b7a412e511627. 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/243b6f9a-7c5f-4dc3-bd89-05fe858019ee.json and https://artists.proofprofile.net/proofs/artist/243b6f9a-7c5f-4dc3-bd89-05fe858019ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Part of Me That Needs You Most / You Stole the Music (Digital 45)
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 0x31ef2e2f0cfe248cc0751c2771eac3b4f4c2f77e8bcd59b12b9849ba009d2106. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/TCAFL2142272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8843b5bfb88d276a2780815c5cd3bb36d6a1bf71aaadd1090a74f7838ef1bb0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:10:19Z), 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/TCAFL2142275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fb63e844f7dca935340015f8c4895535950420560582334c3d85df57621c77. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAFL2142279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3219d0dd67798e2e258337fb9ee33148c1a3d28d67d3565e765f40dbd6eb3bce. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAFL2142468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fcdb16f1a9cdd352d3fc62d4045278f2a79bc642ddf991403d8e0f7fda13a2. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:46:38Z), 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/TCAFL2142481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767e50cbdc4e9fbc29b836a293674899fb3fda4660cffca4b05ad7f53d0d7295. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAFL2142489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ef9c57c4077293a4fe3d670abdc923dc2008465d487e79589c78051d81f47a. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TCAFL2142498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541ed22bcf5ef530ed5aebe36e88eceaa07d9d95f2d1fbf4e2565fc60475f483. 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/TCAFT2105876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712521829e4e0cb8692b00d25c23ac72f3187d62c8cdcd67993ceb859328793f. 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/TCAFT2123636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3786a3d5313a5a3cdf4b29defdb71e0445acda78e915a4ef8d45883fe01cc2. 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/TCAFT2123642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81300ecc96ee892a58f1a199a5a367b8bf4f34b5e452b2f5c96aec4903df1347. 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/TCAFT2123645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa660d0c6a27de7be5173f6110d4e2912ee5c608d8d1c5d910369247b4fa8d77c. 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/TCAFT2123648.
Touch the Part of Me That Needs You Most
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ceaf2663c575a5230448bddbc8c2801079a8aabb9ebeef2bca3dee4abfad86c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAGP2251883.