George Emanuel Călin better known as Manuel Riva is a Romanian DJ and record producer. A long running artist and DJ, he started with the trop Demmo and later in the duo Deepcentral. In Demmo (Roman
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 0xef343a3183631625ed9205eb4d1edd1645d59cc791a3a0fc5d08ca0740926975. 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/99c5f88b-39a6-4906-8e4a-bdfe1aa83480.json and https://artists.proofprofile.net/proofs/artist/99c5f88b-39a6-4906-8e4a-bdfe1aa83480.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 0xa14b3abd8c0a31162a57bbf11e1e7746d4aeafc3a0ef53aadb21259c859c285d. 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/ROUM72200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d9ecb1eb2da0fd5d52786af97c4900053f2c405e607c0f986ea3195e2d0045. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/ROUM72200036.
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 0x0f9ab954a5e69bf2831e9c0f13f1cfaed8ef99ceeb8e653973feca3a5c6c3184. 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/ROUM72400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46a0c16d26c52269e0cc83a78c980f368ef0269ed0a5b1db65f85f9a119f0ab. 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/ROROT2200617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cac01afc0876c3bba6deb2e3fab4e06c7d4b30747f6f34de6b7d045a8b5846. 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/ROROT2200614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5b082f500256bf0375ca4e4caffe90307ade362bd5fe3e468f89a609c4799a. 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/ROROT2200615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46a0c16d26c52269e0cc83a78c980f368ef0269ed0a5b1db65f85f9a119f0ab. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ROROT2200617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14efa7e1204f5cdd0abf02190603f43e3a68e14120e95f60fe94ec2eaf0f59ba. 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/ROROT2200616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5b082f500256bf0375ca4e4caffe90307ade362bd5fe3e468f89a609c4799a. 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/ROROT2200615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8219318c33e0344b99ec042db4293a93d77c31aaa7934837946c8416e16a4d64. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ROROT2200610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f6433e43f8d54c88cf835f164f89c3b2645ed35ad2201d65543f380c554a8c. 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/ROROT1601501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955323ec164ef089d45aeb27116c740dd2b4c7cd52fff1df5cf6cfe4e4f73c83. 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/USLZJ1666124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1df6a2eacdee03a181d1bf9985d4481208dabc545653e6b02d574b68460e24. 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/ROROT1921701.
Sticks & Stones - Manuel Riva & Christian Poow Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8020801864c93a91c044ed52a697b9c407d66f80bcce4769f0a1b4923dc218. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/USR3R1800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f3a8ca4ada5bf87017846e05e45787c044d48d03bc2c76b6c3db253cb3767d. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/NLF711814540.