Medda is an Italian and Indian surname. A very small portion of people in West Bengal, India have this surname. As an Italian surname it is of Sardinian origin where most people with the surname live
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 0x0b4d72354fd1b7d8dd33aa3d0f7300b91b9be6975e7b4ab3661555b7a1086996. 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/2271a686-52e8-4a78-bfc7-29cc1d3510d6.json and https://artists.proofprofile.net/proofs/artist/2271a686-52e8-4a78-bfc7-29cc1d3510d6.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 0xcc3e136d19bf96a6f116606adec93b7e512ef8f2ffe8c7b3dd524d5a209e476c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZES91929392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991908905ea4f520ed0c2f1c49327e96dd9894f122a1db2951c0d5959501c300. 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/QZES91929393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202d380cddcc1ee30b30211d911fda9d4d283d187c9997ab49e3e03f3801d84c. 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/QZES91929394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30167aec087c894f4954dcf50a9fe6bcfb179e7ea70f7c890e9bd53d7cca3ca7. 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/QZES91929395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9755d85f0c3e8b6d0223b425e592b25e036891545c986757c9808e1724804f74. 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/QZES91929396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b11762f1ebd623338f05a6d8586cdb1931d70d55bcf25e64d3664680c9da2c. 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/QZES91929397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef8838d4320f04970b36238c277bdee66a199316bf70b77ba90ef104bbf0aa0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZES91929398.
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 0x039e1db53e6fad18bd153d0488e92c965db809956203acbbaed640b106590540. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/QZES91929399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b140e5c49c7cd5b08ddc86dbb03e39cfaf8375f062b593012cff834b9d3c4d. 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/QZDA72344500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bd3bb8d410b907dd186f12ee74e52ece4c44ddba47eab8c3902054c32ef085. 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/QZK6H2281880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276d21aafed2e3e8ba74b2d5ed522cc7e822d20bded0f70ce42405f4932eeb52. 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/QZHNB2112408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885d6988629478cbe537858dba2ec28ee42559e747169e4fd16d5d3ec58a1547. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US3DF2085621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4e9aee86ee9385028b91154824dfa266fdc3b449870e7c9260ea46ff59da10. 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/QZK6L2009299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eefc37b69de00eb94b6a4e755d1ae18b2e626f595a8a6b7e9971605f8711d55. 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/QZHNB1993362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f44dcec2461c698ffd79af2bc0b92f609a3db7b70bdb4caa96f4ec811678b9c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SEYOK1781385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ad2de3fbbe0046674a2c097ce3f1bf958367a5a02457fa1a6e59f107ccb008. 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/SEYOK1781395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6561ba234d4adf486d6f2a5ac21126c127ba6b346ef6ab4ac769fb4840f8f0a9. 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/SEYOK1781401.
Fall in Love : MMXVIII : Lo-Hop Anthology
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4b9148ca78448e3995a355c523d5de8ebf299ef7870335b727668e76fa3ec4. 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/UST8K1871747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1a97262019e78474156763122d6572eda6b5413b9b0cd7ea04a207c2fcac52. 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/UST8K1871750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ad7781797e5740c644b1b033a0bea20e40c9c3f97468c7e5ee76a7b5348ed9. 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/UST8K1871753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7394ce3d68cd659af737a1ca11b4ae34e82dd555c80e0f2c98819b812a3271f8. 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/QZH5E2339217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd6fe355d6c8498b28cb4b6b1ee1675532a6224f4c98ceb81b24a609d1e90c2. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZH5E2339230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd003bf20a4fd8ebde066ab4501ac1efb7444980869b8da61afb77677594b38. 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/QZH5E2339238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaec91e5f017ebb4f612e2edb8e6ef56f444d0cf7f747823a8eabc1bd7fbff6e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZH5E2339231.