Mauro Davi dos Santos Nepomuceno (born 1 March 2000), better known by his stage name Oruam (), is a Brazilian rapper, singer and songwriter. Career Growing up in the favelas and suburbs of Rio de J
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 0x0765e8316f22a62c0ae4fd148d2a0d53b8bf03c1fc9902f1e87b6fc06abe0d95. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a01b2ca-11e7-4b40-a33e-902ecd85800d.json and https://artists.proofprofile.net/proofs/artist/6a01b2ca-11e7-4b40-a33e-902ecd85800d.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 0x50dcc50d604b9931066f3aad3b062f210e15b3f035c1e044a7e64ebbb6b4539a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCM9A2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1d06d505c95e6c092d8c00cd1212493bc59093edf7bba86238c87a0e85e051. 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/BCM9A2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02ebe2719dfeafdd1c2cfe3ad5c44130c843ddb52b74929da9a519c45ce582f. 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/BRWMB2400534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27eacc1dfebc7c9201ece0e9934429d548e413db4549b6d066ea2ffb5140b48a. 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/BRRGE2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0066f46aaa756012c7738c679362397316954786ebf074392e7ceb94be91011b. 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/BCM9A2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfdb1932ca64b059f83fcb8b9ea0691725eaf9d4aaf19f857f8d2dea6d03cc0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKM2L2300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f544dbb035f2ce38a84e3b36985c1212e4221bb7c273990faade84e4c1b328. 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/BRWMB2300234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1fe8e02ae716eef8f00f9250106cd6e0e2e9051d0427ecc96afb6c66f69985. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCM9A2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb63ce1a4d90bb3ee1b93d25f1fefcb6f67a7c7c3f98113917edb06995dc92c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCM9A2200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a0fa2bbc7039388cd4adc082f05f5556bfb3d46d10eaf41114861a5f35b42e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXW922200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cace02dc01998501561eefdb62c7f1d14232fac037716023593d0924f18ce55. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCM9A2200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e837073444a72efb4bb6f02ac95ab9d11bb252ded91f417d7421f390be260a. 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/BCM9A2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9aa4f3e12b2c95b7d9a4e201db6d1c2b4c8ef3e62ef7f79c26635434c4b505e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCM9A2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f115ca477184784010804a7e4dced1b8e486082dc2bc280e66c3f2214b7a549. 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/BCM9A2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fa2356360a5548adc2d823be002004e5fb714fc6187304054b1edcb4ddabcf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BX6Y62300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28f0632630949675ff6a81987aa9e79368ac3ec2f7d74930af3c9e36b2558d5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCM9A2200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f0fa3e4c1a3d25648d7977da8abe1c4898bb5bcd9938c64e229ea79278940f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKNDN2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566c24c1bbbe0eba7380acd3f763b7d3f5d36012b9979f2961e8ca2502760b52. 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/BCM9A2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ba949a25e44028678c7c074d6382d8451fd6b31c91eb324331d951c8da04f1. 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/BCSOR2300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11c3de1f043ea6a630adae399866e5b0bc93c09ab7ab16f863837c6606f4f1d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRWMB2400811.