Marcus Vialva (born January 13, 1974), better known by his stage name Shabaam Sahdeeq, is an American alternative hip hop artist from Brooklyn, New York City. He appeared with Rawkus Records and was f
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 0xdf360767ee526dd2751774dd8d1a57e24fb5850af7e01fd8d792b2436bec9eff. 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/b4ccb564-0b80-4f3c-8caa-884ce24d05a4.json and https://artists.proofprofile.net/proofs/artist/b4ccb564-0b80-4f3c-8caa-884ce24d05a4.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 0x232ae5a9fd2d2f909558525d452ca4c661d73f97d19c7281d9eadadc6450b9d3. 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/QZFYX2206517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf389f03daf867a5ba7785df138f664eb980d8e3295fc6dc6682486ad3aea80ff. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZFYX2206510.
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 0x0debf6aaa77ab0acbea2e99564a62b6b89b3ed433cf94dd52e7f797178ab211c. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QZFYX2206511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dbb7a5a2548413479333e7cb4dba967dc82fdacd28d2594921a54473871a63. 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/US92U1902311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c71055ada5c2a58ecc9b403dd5cfa3e28a0e6a394846985762f30f0b558648e. 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/US92U1902318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91badd9834694dced4416befc8d1285b6b83bf1fe575b16c9b1d3af5d0c1b5b5. 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/USHM21684039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6992bd09769d4dab6e64c0933afa90cd076a848c30f981a9ce57b416fbf7eb48. 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/USLD90800330.
Connect 4 (feat. UG, Casual & Sean Price)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fb4696e264079aec217453838e6e81985512b87b013ae993993b0c2d8ddc4c. 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/USLD90800333.
Lyrical Fluctuation (feat. Pharoahe Monch, Talib Kweli & Mr. Complex)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1f64434b46fdcfcae6eb784e914161228c98347b9ca2710234d4de0953d0c3. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/USLD90800334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bc41df252c13b10542d94e9d51bae80c368a4031ee0bafb59c02bf5548f596. 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/QZ8LD1713059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc75395a9909e1d094f0861873e48d61f237888b30f8a869c72951eb2897235. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZ8LD1713064.
Sick Spitters (feat. Edo. G & Shabaam Sahdeeq)
DJ Duke (cuts by DJ Djaz) [prod.by Mil Beats & DJ Brans]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea3375c11884cc5285319e19e4a0ed01279ec7d0fce285bb9e2ada4f1e8f050. 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/QZHN82038949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7374f4c30776921783b575a56bbc3ee172c9d3af29303a92528d85a7eac941cc. 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/QZ8LD1750763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206b05688859c8aafa9ef812a86c56c3324a224579b62042daff25ae6003299d. 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/QZ8LD1750458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116ced9b833379fb61fb5024103627645df20b853d1491cdc8e6c17bf82c97ca. 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/NOWAT9801090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38846a34262277d7cbb6c16665aac1236fdf667a228f3594c5bde42270aec13d. 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/USGH60610040.
Nick Wiz Presents: Cellar Sounds, Vol. 4: 1992-1998
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4c8a9f60ce91d59686e52ad73f657bd67580e03c674acfcb0d89c4ae0a45cd. 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/QMBZ91510874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e23f3aab17ac018ff6f231963f219c6623819c574754455677ca578d17da4fe. 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/QMBZ91510890.