Mapei S.p.A. () is an Italian limited company founded in 1937 in Milan that manufactures chemical products for the building industry. History Innovation and research The company was founded and o
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 0x2767ab0129ec6d86f4f2758483594b33d957bb77768079deb5a5512c53ff095c. 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/a6a63bf2-6506-4cca-b70f-312ef9d990ab.json and https://artists.proofprofile.net/proofs/artist/a6a63bf2-6506-4cca-b70f-312ef9d990ab.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 0x047c6aa2f71e389d40d755a67ce670c1bb0d6e1abb95fa2d0827007b898f3919. 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/GBUM72200696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680bff89e3f4787345c83d3dfe35337258b82b3c9792b2e194399e0b9dcde3fe. 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/USCJ80900286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cfb65e365efc52b1fe3aa282737e41a8c5361970da64e6f5cbaa5a4099fe90. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/SEVQF2200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77700b702da992b0bd817d79c8bdd0b42c1a1e527c3798598d3d55a394ac9b64. 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/USUG12202131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6e54deb38d51b719734516239d5b076778dbbe545be20c5ea7b2a385eceebb. 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/SE5BU2194842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6e54deb38d51b719734516239d5b076778dbbe545be20c5ea7b2a385eceebb. 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/SE5BU2194842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a59c63bb9234fd06e9d69d363d8a0238c8ffc8ce6ee351d3da7e5fba75fc28. 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/USQX91801796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe393c4e793564ff01b9678c608bebc980c00573120e4317d8fd36404dfdb4b. 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/SEVQI2111006.
En grej i taget (feat. Mapei & MagnusTheMagnus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad292e77c9ae55ce45aeceb8f95ba242e880c5759a1b361195fb4a5e4ce3a2d9. 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/SEBGA1800412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00fdb1d8ad88623a4dcc7b8c106219f5b4a950efbf340baa6fb2e9bf15a9bb8. 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/SEWEE2326701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2559e8110c0499b251ffa2d9622beb38df0450e3c2c1d9c7f8c684f372ba320. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/SEVQF2300711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf783d45f6c34ffb44eff50698a6dcca304a721ebd786d9066a9decbbe8d1c43. 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/SEVQI2111007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21702fa7686a2ee4bfb2144e64d325d3135093f7ad647f19a95d850450d5c474. 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/SEVQI2111008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e76673ef7d6a2f6a0e4beef89fffc231fc9224fdaaefc3b80d2f0a14ce2dfc. 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/SEYWK1500601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae23bf911a92110889a3a4eb628bcf9e0dd24ccd2470943b7f03268740b6b9c. 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/SEVQI2022001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76012629fbc3e36bb39a4fcfab49814282adaafa93bf1cb688bac3d45bdd44a8. 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/SEVQI2111001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cff38f3ecebeaec427f4a522ffbb4fc795c1caf7818df0a966811b9449a907c. 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/SEVQI2111002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86ba1ae77c5f9a5166bb3fbe2ca0a59196447516fe0bab59644e1561fe1d1a2. 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/SEVQI2111003.