Robert Smith, better known by his stage name Rob Sonic, is an American rapper and record producer from the Bronx, New York. He has been a member of the groups Sonic Sum and Hail Mary Mallon. He is a 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 0x5ffa5b334f5fcdac3e65c6ce30cc18492392f2e1c37e127f18d9300e8b2fb15b. 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/57a0cdd0-c04f-4822-955a-425c1088d77c.json and https://artists.proofprofile.net/proofs/artist/57a0cdd0-c04f-4822-955a-425c1088d77c.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 0x0e1f1cef4dbba3efe8a6329228deea46d41ef6886583ecfafe6931e03ad15b2f. 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/TCADI1764930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9706ec524b727d3bddd94f7c98b7096f016ede48b9809c130c6bd5eefbe91a19. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:02:43Z), 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/TCADI1764953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688ea9d7116d497fd85c95a459a50d557e0cad14f4d1a9e3e1eb638bc34b74d5. 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/TCADI1764960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e16a3cab36e34f249ec790e95e05f3648bbf35c30ef7df24a823e627aab675. 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/TCABZ1416393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260cbd88ca727167b8caf3dccc103647a7e2a5fe76a2423a45ddd0129b87ebe8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:03:23Z), 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/TCABZ1416401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a19ee820d8a1e0b237de9896d5cb226599ca48be2d9af323ce8906cd0c142e2. 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/TCABZ1416404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256f147586f36dcf18a2aca699f82ff398c7710e7d4b7ac35ad7477b3ee763c8. 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/TCABZ1416413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f313f29395660b5296432d5bc583c8fb1c50e4e1737e8209e3cb026632d039c. 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/TCABZ1416414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d58da224ce83a24caa7f51d5aa580002c38265742a7138d9e2465b038e940a3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCADT1865658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa393468d8f2dd9d7e0d69fdd95cf77922fd6ccdcfd65d6c4642089d0624ad490. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCADT1865659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c729916cadd56b12f4e42ee4bfae0a0134d24db8f1a735411d65c77d8331eff. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/TCADT1865661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe199fa2af57e214b6d9a2caedd1815be091095db04d869cff3263bbf48885be. 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/TCADT1865662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f5a24dc77cac820225dbd7d624e46c5f13ca89570af331c6febf73e13dc164. 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/TCADT1865665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39e73a55bcc54fa66043f7645fba1482221daffc4f8d11222e53f1c5a09fb56. 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/TCADT1865666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415db551ef0dc5ba0fbd39c2222b113eae408ddb551d93ed490dfcf896665e4d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCADT1865672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba8f8a8f35dcb4a33c21a54c4d4cfe891cf51679cd6d3b2f25115e6a69b6b64. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCADZ1819753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26367b658666aea9f872f1a539accf796bcb29f6781bbeb5b230c2bb0381bc34. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:35:26Z), 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/TCADZ1819794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d232c046544f576962b87a525cfc5d6b1c365b163512f53219329cae02159c8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCADZ1819796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838547d2ff6936c599d8eff10b860bc3099c820bb3709800fea6d8207de85fd9. 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/TCADZ1819803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a9ce48b9e4808a8471bcfdca26333b5ad17161332f8a5555990a28644750d4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:09:58Z), 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/TCAFU2103127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2d11ce616c096dd2fe408745bdd7d0b4bb6db05d05f8391edd5e57dbf7df6f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAFU2103129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1e9f62e187dc8d765db531153d91de445bd1a22b170c15106c06da7caa3fb1. 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/TCAFU2103147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5e92fad2d703056b833fb64f2d8cedcb9a0c5dedb77f62a48fd488947f3b45. 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/TCAFU2103168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507219cf415ed2a0b67a0d266e9537b120aa088ead17aac21745c8bd97555fb4. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/TCAFU2103170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca60b5db58da6d673847999417736d0e51f28a8df36ddea9244af0d57cc4deb9. 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/TCAFU2103171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5154df0b7b75971c1aebb74ac4aa30ba10e20b128d59102b1bb16e7f9142d43. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:08:06Z), 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/TCAFU2103173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ef95edc6a76c40e6020ce79d3ca49aef19617f4d59a4b2a4f342b4aaf0a5c6. 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/USA4T0402707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d44ba06bc931353b35c5c163d76c7c1df699b517539e5489c7744e5c9196af. 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/USBWK2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dfef2f398ed8f2ac68b250fda8bf877ca75d687d26df5f9f8d6c2698591c39. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USJEJ0624317.
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