Carmen Monarcha (born August 27, 1979 in Belém, Pará) is a Brazilian soprano. Born into an artistic family in northern Brazil, her father is a writer and her mother, Marina Monarcha, a renowned Brazi
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 0x2bbefd3eac94e6e9d2b0e1f8e5b3159ab9940a27ba6671a47a3aedd82c0f9698. 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/5b35c30b-5900-466f-bb89-e67af10f036f.json and https://artists.proofprofile.net/proofs/artist/5b35c30b-5900-466f-bb89-e67af10f036f.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 0x095e84a1765078b38b9f501b7139d57684edfed26f162a119a3f133d2fe0e56d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BR85X1300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c55447dd147c195782e6d5d6b4d5ed974987711726492e2bd15ecbf2a1e395. 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/BR85X1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab01e181fabb0da921712f5834c55616daa8bb2322f0ed8399c9ee6358232de3. 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/BR4R22300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d0e6295616696b1fb9f2bcfabf2c8bb98e0a5257ef29074f1303e1b37cdad9. 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/DEUM70901668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15e2526fb8cc453cba57e26792276ac1e4a854d362a04b71456630846e3bb34. 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/DEUM70901669.
Happiness - The Music of Joy (Silver Memories)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2597ac65ee0f518645590c836f64f8ccbb04f9643bad30f632d1753b8b1e23a8. 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/DEUM70709249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd119f558474a4de69283b2593b2675422cf30d09c8caac0d886a53a7928f4319. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEUM70709237.
Brüderchen komm tanz mit mir (Arr. André Rieu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39691d3648fe3c1e2ee4b989cd7cd1cd17319d02f83e4374f7c4adcffe99b72d. 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/DEUM70709241.
Abends will ich schlafen geh'n (Arr. André Rieu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6743c12e1075c66a672f0759128f7baa7b633d760a64f43b1ca05e59663919e3. 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/DEUM70709242.
Someday My Prince Will Come (Arr. André Rieu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3c57f009aa37602fafe960d13addbc9162d4e0fd4003ba86652428bd66cf40. 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/DEUM70709243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2597ac65ee0f518645590c836f64f8ccbb04f9643bad30f632d1753b8b1e23a8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEUM70709249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb76bc46d2e4d9b1ed993a6761a5d154f2cb4c6574ea0a2adddcb5165f61874. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEUM71001521.
Andre Rieu Presents Mirusia: Always & Forever
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb76bc46d2e4d9b1ed993a6761a5d154f2cb4c6574ea0a2adddcb5165f61874. 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/DEUM71001521.
In Love with Maastricht - A Tribute to My Hometown
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feefecdee68a21e1f19de64e3f1adf6b08c322f77e2191afce7fd04efb466a4. 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/DEUM71203317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fe751e12c7edb563580f475a5ce342d9e0b7d9e0906ef2ef32355eff046fe7. 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/DEUM71203306.
Maastricht Anthem - Live in Maastricht , 2012
Der Königliche Männerchor Mastreechter Staar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036f5a15f76dd154931ebe296657ed8d463d52c2c95dfb68d769dc80af42dc6b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEUM71203332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd119f558474a4de69283b2593b2675422cf30d09c8caac0d886a53a7928f4319. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/DEUM70709237.
Im Salon zur blauen Pagode (Arr. André Rieu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7564e015f7557221f0c37f454b5584df1d14a8aafa18bb075f5829994783e737. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEUM70709246.
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 0xe1c5c5fdea28dafc478f64cc1c4ab3a0d9b0f6b488620af2d3039239522f9a14. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEUM71001522.