Ruma (; ) is a town and municipality in the Srem District of the Autonomous Province of Vojvodina, Serbia. As of 2022, the town has a population of 27,747, while the municipality has a population of 4
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 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 0xb5e3decfa7b0399c1280ea9ea456e7fcdbb88a5b9099e90191101ac7c88a9b89. 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/1f87836b-a3af-43a5-aba9-f82c20d5158c.json and https://artists.proofprofile.net/proofs/artist/1f87836b-a3af-43a5-aba9-f82c20d5158c.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 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 0xe7501c569eda0c037ce0abfab9886f5486ed2e1cd438dda18591b85678cbc95f. 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/FIKHY1700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe452a15cbea9ab5771d767a5043ddffd3cbcc3896760be8a900625b42a5f8c29. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FIKHY1700073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88db553b9b7abe895fcb796d3d138ca3357c8078665294aff6f7543607605feb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FIKHY1800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11d332976d69786bfd6742ea279a6b2cd358a2b1cd827243d75bba2585c5d38. 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/FIKHY1800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc0e6b852dd1bf370ffb6742e7bb1b8ee9c7c67e86ad104735e7fe685041ed1. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/FIKHY1800081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd66d4c31baa2dabdad3025e469a3288c454d4ff8aa8fd4540dcc8405be5a11d. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FIKHY1900002.
Bäk in the deis (feat. Bulle & Paleface)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9910cf79b9e689592d14e7c20e71e869920844b5828532925ee6d552ab175469. 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/QZHNB2395929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086fc18cd1042e4ee1760990c26fb23f9cf1fcf54761084e3cf12dca24165175. 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/QZTAU2322361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7e1f19c835284b03e2d8319ba3b6eceb52ec6c80c64a5a99c976e38fed5b12. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZTB92369396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1276cd1e790e79d6e81bb0cd18c889829d939476ed4ceb4b3462ee299771b9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6G2460088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4d469b74f87e9178e847716b41814e5d55d584e76aaafd89cb0f30a19e3eb2. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZMEP2420491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1276cd1e790e79d6e81bb0cd18c889829d939476ed4ceb4b3462ee299771b9. 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/QZK6G2460088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedf2a921e1d72ba3f64fdc10d29c4a2d52506b34f2ec281e3917a4d0f0be7b7. 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/QZWFQ2455298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6527aba1797c6064472ef991f3288778272c3d92662f7e4b662c1cf12ad5d2e. 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/QZHNB2257956.