Marcus Andrew Lee (born September 14, 1994) is an American professional basketball player who last played for the San Miguel Beermen of the Philippine Basketball Association (PBA). He played college b
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 0x8de8deb2aaab734359b90c2aaa4af1b8405cd1249546107cfeedb5ef37554abe. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba64341a-abc2-4aee-a1c7-9ec6abc410da.json and https://artists.proofprofile.net/proofs/artist/ba64341a-abc2-4aee-a1c7-9ec6abc410da.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 0xa815605b00bc34f014faaa2034e5f8a2cb0826bc162bb31911f94a41c3c8d120. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBMJG2301675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc477730d34a47396e6925cba3f47867e1307c8c0012e3220a6b0025f456c2e14. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR26V2079970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0caed4322cd8776b9fac14fc46852149b5199e147d683ef11cc15e9a96992e11. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:43:20Z), 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/FR10S2119248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8604671fb8b6cb55ce659258ba7c36b427bff717b38226f769a7a69ec8daaf. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FRX202114706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb6a5803decdca4a15d7b34982592fddf0e2cd572f6e995190ee61941b48f61. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMBZ92052440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0caed4322cd8776b9fac14fc46852149b5199e147d683ef11cc15e9a96992e11. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR10S2119248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac66601e659763ab2cb0bb3c366646d604458d04adb52d509049f9b6f12492a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR59R2299979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7babb7e1e2b9be8da8169990adc5895aeaecc1870a25c94ef262d1cb8b029ad5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX872280782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd453487fa4ad94091bf9c04273aa81158a18037e94c2cc24b2e92a03f797b9b. 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/DGA072299130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d441a65a3b6107d93b92b3c5219535536b147d69e0d9185449442e3d685573e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DGA0L2385860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af01b9e71442f13474c8800144c65829b8227a986d93fc1c352a60bea3983fe. 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/FRX282429945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ef000dc7a425ea102bac94824b59f3a75fc1c4fa8df37c6731f46b43b48330. 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/DGA0L2422677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5f7cfcb0f72794c970c263427e970d3283c461834f3a078e187efe0bd0ce90. 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/FR2X42194672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304e1afd8f0ad10944e9c18ab01f52420468597b9c6c8b302176f7fb678a6d34. 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/SGA052200116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508de69c824e6d4236bea6166f8f4ea81b28d578271521bdc36ce6cb102ed541. 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/TWCT52208549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0591fb3ffa5d70bf169ea3afe449f0f328f292ab0439c95dbe40a8a0e10a0146. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QMFME1996935.
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