Muri & Mario, at times Muri og Mario is a Danish-Italian pop duo made up of Murad Mahmoud (Muri) and Mario Sciacca (Mario). They formed the duo in 2009 putting out a number of Latin-inspired pop song
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 0x4a49f523cb3cdfb25ad49d6a8f00a35b42a30e0374b4c1873c2a567e2a26b34b. 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/e50a38dd-a859-4c95-9c6f-ac5927b1a8f6.json and https://artists.proofprofile.net/proofs/artist/e50a38dd-a859-4c95-9c6f-ac5927b1a8f6.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 0xda2800c36a7a2f06e625921388d2b000aa875900b105df89dcc1489da2ae5b8c. 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/DK4YA1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f04f69bc0a06aa241284dff0e153da925b1b6a38c54cf030c41effa6eaf533. 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/DKMM11301601.
Venner Eller Fjender - Rasmus Skøtt & Mathias Bang Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52594aae66228208434590e904394690540a95633e4adb88cb57d8819183b7a5. 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/DKMM11301605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d84b604638413e88b63feb85895ed7bb0bded848ca518242c01fe5c0e06fdef. 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/DKMM11203301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f04f69bc0a06aa241284dff0e153da925b1b6a38c54cf030c41effa6eaf533. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKMM11301601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d84b604638413e88b63feb85895ed7bb0bded848ca518242c01fe5c0e06fdef. 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/DKMM11203301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bcea3ad27f1c71b5ea88d94fb8b9a1ef50722d8fd33f457361f6440e47ae63. 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/DKMM11201701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fcd270e5f50d449f868d4538ccc94f81774a79e205252c0b5eb15cb8286d38. 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/DKMM11301801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2272775d9a80a0c7812511b5a7842aecacf5256ca57ceb563b25d64097f577d8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DKMM11301401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bcea3ad27f1c71b5ea88d94fb8b9a1ef50722d8fd33f457361f6440e47ae63. 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/DKMM11201701.
Hun Tog Min Guitar - Anders Sivgaard Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c4830214e7596c90188ade54abb5dec6465c926ae45205e95e5953ae8c6629. 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/DKMM11201702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a3ad75c6eb1b0a9dfc6c028abbfb319023f40ce7ee600e9b5c270ef44c3f7b. 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/QM4TW1926954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9609c559e20f419ef845c3343e5c17c96c5acc91d161d2bb6ea93cd6d354495d. 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/TCABE1292202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0090235d6077c6568d1555f6746561987770787888c2cbbcba1922d8fa9ef280. 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/TCAEK1973548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22e64e96f4dedf366d2cdf1c9f665735e83d52191e400ad994a6b9a8450c652. 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/TCAEK1973585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443a6fa257440c3ad26f3b9f11d1768410acea3807cca00e0d44245a19b4c575. 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/TCAEK1973645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71791baaff04c09073e747b06cd5186d3bb7ccb19671b57ee5023cc68b13b04. 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/TCAEK1973682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1045cb5e4ca4c07b881efe943194cbd41ffda602951d5b4f609a62469e82de. 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/TCACQ1680611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb4aaa5f7a926bca2866ed9b74c5abf718d3acc738ca529376d5f3db61ba06e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCACL1669803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb4aaa5f7a926bca2866ed9b74c5abf718d3acc738ca529376d5f3db61ba06e. 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/TCACL1669803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2800c36a7a2f06e625921388d2b000aa875900b105df89dcc1489da2ae5b8c. 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/DK4YA1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cfa48c2efe5b332047648dba71444177bdc9605d1aa68782dc4998d63ad917. 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/DKFJ41500124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07d084900a2cbb9580d74607735729971fe52d45178d2e0643f2f0c68902248. 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/DKADG1500581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad4d775f4f0eef0f908d9948751f0d37c0bfd8928fbf6c6d1e262a84d394b24. 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/DK4Q41500701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a597d5d39745e375d6e695dc335053d6ae2ff49f77fb8523f6e788baba315b. 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/DKADG1500583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce490f750ef5c36b9aed084e837dfcbee3e351748e3016a9b0fc166bcd8b9e9. 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/AUUM71501928.