Quartiere Coffee is an Italian reggae band from Grosseto, formed in 2004. History They debuted in 2008 with the studio album In-A, produced by Ciro "Prince Vibe" Pisanelli, and performed at Rototom S
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 0x3155d7cf89702c30f60a9e5da5f09b949f4aa127ba214ca3f4fa4a93d719a25b. 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/5aa02a6f-2370-450d-9ee9-516c4e632fe2.json and https://artists.proofprofile.net/proofs/artist/5aa02a6f-2370-450d-9ee9-516c4e632fe2.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 0x173b2ff137200e1ee727d45a9590ac595a7f7e0ff2f08aa7402f3b0e065a1a52. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITP220800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31f4a7851bdf6c8d555d05013fff2c685ffa19b8cef98a06986486c89db2d18. 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/ITP221000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ed2a3aec7aec767feb0480514b6dd25cf281b9fba4bb8b5fdb66404eca4609. 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/ITP221000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb12557efc32203f7e7808b4d96530f8360d88d10c85de93becf72b177334f81. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/ITI731300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ca0ae330444778c6bf1da77f362a4d346fef0bc0a185b733b52c071548e005. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/ITV852200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a048b809bbb939e4fd42c3fbe7931b5fbdd9195bc8ab9a2c2e8a2c96c8121c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITV852200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6df93cece4d15d71f6d2037ed48b61fb8774444fe3e3d4bc6c699aaa44f4f7e. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ITP842400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006a4acc067021f4b3b59bf2ef3205642b216fe039f7b0335f0ff12fce5647c8. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/ITP842400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97b4335dab63bc3b51f3bc5625a2bb5ef8a74b229c8ea97dc64e56f7f2cb115. 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/ITP842400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6c32e04ea2840685dadc2abb03a6ec5bee9140056d1b6e8161e792b24915fd. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ITP842400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b706c04323cf837bcbf40c3f65679713044f9d2fc86c9c0e1ced1fbee296a5. 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/ITP842400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2318c2c1977e32a8ae162bd89d77b272af9f8275eea77ace157e00a971621a. 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/ITP842400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f52958550bbd3fe9da074ea42aacaa1089d1893ed77b98e8d7188d290775c25. 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/ITP842400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07ddc4d7ffb388771f71f5869f1b709169583768bf5d6395489415420cb1188. 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/ITP842400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7318507cd9580ad7d90a0f1b05ec10971c3789b645acc6768add97c06e7128. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ITP842400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed56651c2f13207dbec3abb4f32b1b29e1a3f43cd5b1552d9712fbdc4bcd5dc. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ITP842400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8523ea0d5c4d0b543ba0534bf4ad4a78b3f5550aa4a266d32536320ce86060. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ITP842400109.