Pedro Juan Vázquez Bragan (born August 5, 1989), known professionally as PJ Sin Suela, is a Puerto Rican rapper and doctor. Born in The Bronx, New York City and raised in Ponce, Puerto Rico, he gradua
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 0xb54138eafe863fe90260eff05bd1bc475eb2512080dbfd6833c681e17946c742. 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/4ae1c5e5-dc41-4052-b49d-207669cdcf65.json and https://artists.proofprofile.net/proofs/artist/4ae1c5e5-dc41-4052-b49d-207669cdcf65.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 0xa11bc78b364006c1c1b6260dc262a43a4f8400ac605db9b599f2b3a6684a152b. 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/QM6P42210706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a88d50b79408b710f357e4965ccfd074ff69187bf3e3ba2021282d160da1f8. 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/MXF152000322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc845967ed933c13ca2a324555fe6e438f29c57e7b2290c05626332853d6a3c. 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/TCAFE2077871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f44d56fafce64cfa5f9e306986d49bc57e57343262740fcbcdfd68b4cc1c706. 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/UYB282397001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34a5b838e2b05abf108344073b65e40d82f51d72379f28f655ea89b57a04f1e. 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/QZDYA1800085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d5b9c981be4262f8dfdf5234851fae4118fc06571968c171a386a7d505c622. 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/TCAGR2241201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a88d50b79408b710f357e4965ccfd074ff69187bf3e3ba2021282d160da1f8. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/MXF152000322.
Esperando Pelitos (from the Netflix Series "Big Mouth")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e2c8c1ea2f4b7f6feef44ffebd8ca5a43fcd687093403c17c36ea6554a4fa9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ8BZ2307465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf653ae8b6ba73b5af2801b87fb2dfa260ca01ec1feb34dfd79b3716964ad880. 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/USSD11900237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea17cf7664c15649d073ca4c9caab6dfdca7127a75809b776a6be979131bb0a. 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/TCAIE2484431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edfd73239973af36472aee9fe683c7ab4e38c2c18d7abc32c41d627a45ca8df. 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/QM7282361928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e2579f0fb0db0877bc166f671cae7e2d3f018753bba7277d27e8885c3ac616. 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/TCAGQ2253374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafe9eda9dd1e64b4a6c63d6639d1b68e795713e19fc095c8a0ecd86388282bb. 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/USKO12000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1fd71c1de027ce3c86eba005aaa13c3f303c672abd88f08e02225a5625ce09. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TCAGR2247860.
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