Marianna Mammone (born 10 March 2000), known professionally as BigMama, is an Italian rapper, singer, and songwriter. She was a contestant on the Sanremo Music Festival 2024 and co-commentated the Ita
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 0xa76a29d179bfe1890a083fd60f0e259d8e6c7da4b88804cc168627ec5de165c3. 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/6297214e-ee3c-4d01-afb4-0fbbf9e45313.json and https://artists.proofprofile.net/proofs/artist/6297214e-ee3c-4d01-afb4-0fbbf9e45313.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 0xc459fd51b20d1e29ed0d2bc06134f0bda7409c9d6df7a5fc520f1abeee9f1d2a. 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/ITUR32196001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca5704269fffd52ee0c94da53bec19095d04b09cdce2a37a58c58d876aee5df. 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/ITRWL2100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda74bd7e5b06e5edf4a5db36aee05e9ae6e4a6e16c0d03aa9c4b9fae7e750954. 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/ITRWL2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d90c455b89bf4852c7ac545941f0ef2d4e0183dc555908ddc37ac0b956579b. 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/ITRWL2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61295c253266580b4b31d341f5258e806051045fbb3fc6c3391c19b8301caf2. 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/ITRWL2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e35c56fbceb7403c19028dc7530f3172e9ca487b4a9e749e0c7fd7faeccb15. 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/ITRWL2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146d4033d461879c405b0c10fca7e651a0be2d351423c2c10d51d4b0cbf53837. 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/ITRWL2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75dc7b70ec2f57830991fa83e06f4264314b974b1a231e4cf0b1665fae837be7. 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/ITRWL2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bb3a646ee10ac96de975c77a1a6f1ef131b0a4da30172068cd7b5fb01ed78f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ITRWL2200009.
Fa strano (Lady Marmalade) (feat. Gaia, Sissi & LA NIÑA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec64ddc025c573453d72b94c0992e51de5e805f26ed506c37f7d9d1823576ac9. 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/ITRWL2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f80b037804a355e8e1407d8a9cd5d755a4768723f07db7e2a7582b867bb3b9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ITRWL2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7aee249282ddd5f903fbcce8d2d64c506bc39112fe849c7dde04c881c0072ba. 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/ITRWL2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed2a89caa56b535bfc55c7c4c6d899fb81992a70b0a09eb8bd940203d744e8b. 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/ITRWL2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eef13426de999680bfeed3291f3cc2a68f697fc70bab3c321d5137f6bc47be1. 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/ITRWL2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0048416fa116a78ca8772ba06469b0a6de73142b33a4c03aef94845925e4167f. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ITRWL2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f80b037804a355e8e1407d8a9cd5d755a4768723f07db7e2a7582b867bb3b9. 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/ITRWL2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d8a673a92b3817acf8835f0a8778f7ed31ae82b36f96b414050a24bd127c67. 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/ITRWL2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d6a9f8e4898f049fd210ee50085c4f3475d0ca5734d65f0843f936faaae108. 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/ITRWL2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7aee249282ddd5f903fbcce8d2d64c506bc39112fe849c7dde04c881c0072ba. 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/ITRWL2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed2a89caa56b535bfc55c7c4c6d899fb81992a70b0a09eb8bd940203d744e8b. 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/ITRWL2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eef13426de999680bfeed3291f3cc2a68f697fc70bab3c321d5137f6bc47be1. 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/ITRWL2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04414b5dcc9aa18aa290587dd1ebb3ad2708308b018097f1355429006b412aa6. 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/ITRWL2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0048416fa116a78ca8772ba06469b0a6de73142b33a4c03aef94845925e4167f. 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/ITRWL2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156671cd86949229e80af7474a92fa1a384e1bb95b1ec3bcec73783c723223e1. 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/ITRWL2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06fd2017d06ff945d227dd3a1afd7099881498a33751ce7a7f3923c41cd5974. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:08:31Z), 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/ITRWL2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd57c6378754f8af6f26dc0c088de646d26bb3d44de9bb3630d7098ad5b9423. 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/ITRWL2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec64ddc025c573453d72b94c0992e51de5e805f26ed506c37f7d9d1823576ac9. 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/ITRWL2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8d7da365790ff3d6b4043285da06c651340db9b4370648e4c43dc61a51dafb. 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/ITB002400692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b5009e77b675c53d880ac52af0493da349b19988267b64f28614866c32a95c. 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/FRX452334928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b5009e77b675c53d880ac52af0493da349b19988267b64f28614866c32a95c. 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/FRX452334928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8d7da365790ff3d6b4043285da06c651340db9b4370648e4c43dc61a51dafb. 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/ITB002400692.