Sylvester Johnson (born Sylvester Thompson; July 1, 1936 – February 6, 2022) was an American blues and soul singer, musician, songwriter and record producer. His most successful records included "Dif
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 0x043f9e9b7f9c7fb5d3b93faace6fb2ddb0620a4fde5cad354b081dc791404cc7. 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/937a2a38-8b89-45ff-a464-4392559c734a.json and https://artists.proofprofile.net/proofs/artist/937a2a38-8b89-45ff-a464-4392559c734a.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 0x3cce4611a27602e266a963875abaa9bd10e85b4c4799cb6924d34d9b99bcf087. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USCW61003245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a256f0ad478aa098d0884fc13ffdfa9116cbf093639315bbdcd5fdf5e6ada3. 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/USCW61003230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762c9765dcffdb4ba304805ba6ab7760788b2e922874f9e0f805d57d7cfa2dec. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USCW61003247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a059b20ef84392f73277234315be40ba2c26977ac011dd48f6e859f49747829. 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/USCW61018203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1602328e0af59cc1e7b1b3f4d68caadac7ef7e0e6dfb860ce0099472db4beeb9. 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/USCW61018206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1602700d2d22e4c42b2b46942edab7610dbb0b817a9705e9da7dba0396d2a08. 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/USCW61018208.
Is It Because I'm Black b/w Let Them Hang High
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa011d624618ca9c3260065f27c7847b255ad7b71dcdedc81bf5372e0a95fd590. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/USCW62379501.
Is It Because I'm Black b/w Sock It To Me ('80 Version)
Dream Of A Lifetime b/w All The Way Up To The Top
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79019af8c2ccb7d3f045fbc0132760b9ade082fda72b7a966a1cd675df2b355e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCW62480901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a50cb037a34c96293db852a69816d0e12c0945721a8ead132a727abb19c682. 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/USCW62124901.
Brings Out The Blues In Me b/w How You Need To Be Loved
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c3b4d034e0c02db571e36b76b048e24f75a4f1be9f234f5e1b7445dac672ff. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/US33C0404101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc123f2c9b2825ccfcd128486363d2508ec3fa46301dea96732c84010fb3021c5. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/US4B90472903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13bd4348c0c489c08ccdd3c2ac486c6d8fd289c6f85391df669ffd9beaf1fcd. 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/GBHFE0513230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe465d6aae668ac9608671688ded696c3d7d5302da8e34be33859bcd87835176f. 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/US2HK0917903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafddcaac90f7c2c5dae10518c72df5b3f3f872e95bcbfab0bd4962debcee3db3. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/US2HK0917905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092a097bfd55290b7f39de9184d51aaea7ebe5f5a399a714aac0399ac301a45b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/US2HK0917906.
Is It Because I'm Black (Extended Single)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c40c61693b5277a133450c62eb1a00328398b28f682fb0ee50fc5a6e61edd4. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USCW61003203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bdf6470141f0842bd2f0da9c29d7224bd149518c3cf61d9f756c63a3ee1a80. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USCW61003204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319daef0a7de257882b4f7bf6f3c0101fdcb8e123c355fe33dfe8962f8fec204. 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/USCW61003265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f2001ea54e82e9baadf62b6c6cc4e28cfb54f9fc93fd55be83ca0e14d1242c. 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/USCW61003207.
(She's So Fine) I Just Gotta Make Her Mine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cf923a55458fcef5c7b1d87098cd4e583c94cb76273a88470aba27833e6c12. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USCW61003208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c8d1befc50cc92b99009b99f210a2148fb13682d64f706c7eb0b1f769c1c3e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCW61003211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cec5c3234d8b539f060727b0d90eafd0e4c0550f3faaa15acc17f99784f33c. 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/USCW61003275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa9801393e77db6318b75771ef2ac38d50a80475f1419ceb1c1fff46423bcb6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCW61003279.
Is It Because I'm Black (Extended) - Single
Syl Johnson with Melody Whittle (feat. Syleena Johnson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf882a9ee4d6c8dee5f5669134ea2b3ce4e3eb8225d0f1be13d0307166524c440. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QMJ6Q1300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceef70a589256c5cf5c29112730eaa86dd10d32e4afc0aeed862b9c7ec6c09a4. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/QMJ6Q1300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcfe2fca8300908582ae25582b95d39dfa059cb36103000ee6b2257f7ea9217. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/USFP70919305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1c45ba5503bac4a38c69ad20b50b7422bf792b8578defb94cd3710c35e8e62. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/US2HK1335004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982e8546c41441033c13856a717a0d0b36a10f6178adda64d389ae3c5e17bd3d. 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/US2HK1335007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5340b61f2e2241e10924c95988c88ce7670b01d0607c4255c6b31f0cb3ff344. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/US2HK1335010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c367df705a60bf8a396dc0c318726664c566a3b0c15fee6f5436f8fd1f9fba7. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USCW61003254.
Different Strokes b/w Is It Because I'm Black
Last Night Was The Night b/w Got My Eyes On You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384cd35f01c0e2140c87caef1acd7985da7644bc4c25c4d82e8fdac1c3c0cb04. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/USCW62515102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0a851228e502de27a0b6311fd3efcbbd614be515ad986ce8625b56c9dd21af. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/USCW62515103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df901ed378e309e9655f35cfe2bffbed00fbb85ec9eb021f3af483f735dff6e. 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/TCAHW2446007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6740dd9631a722ee633d24602e233a8980444519c3617ac210b168e19ed7f74. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/USCW61003263.
Funk Masters : Classics by the Legends of Funky Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf552d0b1954a5bbe7daf526a3c6804be95840bb5fb4e2b8542e91a32d9d3818b. 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/GBHFE0206213.