James Jason Poyser (b. January 30, 1967) is an American record producer, multi-instrumentalist, and songwriter from Philadelphia, Pennsylvania. He has been a member of the hip-hop band The Roots since
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 0x1c353f5cc747869ec8aeccfa0f6843e066b268cda644a7e47d60800d48d1bd36. 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/4e7e2aef-f0a2-4d97-9cde-1590799ee614.json and https://artists.proofprofile.net/proofs/artist/4e7e2aef-f0a2-4d97-9cde-1590799ee614.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Boxing Day (Original Motion Picture Soundtrack)
Long Bright River (Original Series Soundtrack)
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 0x52b35197827b7343dcce4fad0fd1167b6354783744aa265c0575343058a4a175. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:47:56Z), 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/USJPL2500090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad03ad72db24e70a7513087cf867e35ccc4d2d0192195e47f8a04b1c1f1eefa. 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/USJPL2500092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05264cada825e36ae235bf9e8f2b1703fef9ff4cf46483b7b4827785b1f16b1. 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/USJPL2500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02462a202c3847196c0123b055ffcf59216b6a47f9bbae3599b97e08c5633c4. 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/USJPL2500094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd891c6f311adb71bd4653895021ed860528efdbd5545e73bd28a5c1075314f1e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:57:47Z), 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/USJPL2500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecde2e1b37093189f38c6a1889a2c719c385d8e29822063e1af62f361f5d680. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USJPL2500096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85113684a79ab87eb31cf4a4f0e9fef0a21615297b1a7d49a60d3c316d88275e. 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/USJPL2500097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960e5cec6cc056451d668ae3b1fb044b763e7c6c06fbb2c230b352a4b104b394. 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/USJPL2500098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb87610a21f2c18d0e83907b0d7b1e58a211b9fc9f16d30991d1877c36048370. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USJPL2500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2a429101d863a1030a0f92ba4df5ea94e65f27c942234c959cb45a4ecdd6ce. 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/USJPL2500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361e599009d49db8d2a1d66a44949a56537c4df19afad38887f09928f2939fc6. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USJPL2500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9191254d1a35d79e399dbee99a077929c0c1a46633a75a007fb6f7bcdb134091. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:25:53Z), 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/USJPL2500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842bbcffd398c92335ae22f7a5288d3ef7d37c736a3c2c6eaacbc0388f6967c6. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/USJPL2500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdc6ae09360ee65e34e9b35292f63034bfbde7bd1fc1d7c0961919ed7b83886. 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/USJPL2500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e608d637f96294632cd824e35888370545b07e16d281237958b4a90634b94bf. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USJPL2500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f851934e6c1bbe2e7b9351c2666099761bd1acea40a5b9933d915e6a58dca9b. 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/USUM70846654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b0ea0671ba33fb619618f9641fc4e62ed2b22ac2d6eb8143cb7e18ce3db43e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZAPG1741522.
KNOW ME (feat. NOÉ, James Poyser & KAINA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc4f2ff25fac946359049adc14c07af1047dcf22dfd9a0a02eaf1934ab46999. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUFF02300417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06765abc1664c54d96fa644e9f3a3a7a3ddbbd7602e18a1206e0ff9e37459ba5. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QM9K31200299.
The Power of Same (feat. Muhsinah, James Poyser & Stro Elliot)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb8b61ae99abd99666a8856790765aac6f9fa04011e88b6be93879565f8ab57. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBMCZ0601242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e43299d16ea68b23cdd5e073f40d3912bba9385c0b3affe494ea28078a8494. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZF931900109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8df0bdbcf61bc9439378b71200e93e4542d4cb5a9582c2cc55085dcaae3c40d. 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/USY1R1757001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf193e7a796d6839aae031fe3fc19513af232e01538b3b32e2a8a0ccb7ecf61d3. 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/USY1R1757002.
Freedom over Everything (feat. Black Thought) (James Poyser & Stro Elliot Remix)
Freedom Over Everything (feat. Black Thought) [James Poyser & Stro Elliot Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7c8053469e23e7af01b4e3582ce1b64fcd578e73ddf9da4e80fb2aad1de67b. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/DELV42100795.
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 0xe0c85e6a4d58764d84c7bc70257002159c247363e9c239cd9761e76af8ddda36. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USCAJ2000080.