Gelida () is a town and municipality in the comarca of Alt Penedès, Barcelona, Catalonia, Spain. The town is built on a hillside above the Anoia river, the AP-7 motorway, and line 4 of the Barcelona
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 0xf42af2f40dadc76bf425f4bf53aafdcabb751fded8daf7ac67940c753166b780. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fc716de-d0ec-4f19-b51a-f76433a6a0a9.json and https://artists.proofprofile.net/proofs/artist/1fc716de-d0ec-4f19-b51a-f76433a6a0a9.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 0x54888d5ab780c6a6fcde83656e9f200b6ff0c13fc04d7f85ce9038e5aaf190b8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:01:24Z), 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/GBKQU2231654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f2d4d6a7ac6cdd2aec1d6fa7b7bd5166c8ae47cddc5a65c0958230412d47e6. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/US83Z2211442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33736e974781e1cc038d0ddeeb0dfb59fd456e75e7b076c6aa879408b7e83718. 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/SEXJW2303201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14ccf4e4930b1a5555a1bde4c15999d22459110a2c4f37f30d580746891b63b. 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/DGA0Q2367661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc292409e8d80d686e5d73a0ceb2d6796e59ea21bac02485b9ce2c97dda663353. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/DGA052495346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2009e832a86bee0c7b4e38d570151aaa42decd538dfdf922045266a2ec28ea04. 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/NL8RL2440202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2debd53e6bd80ac5d561247eb34c7883f87f8ae0c623bb2e440f22e4e1c3c3a. 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/DGA0T2405293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa393103c09cb4e2c074e3e4550a32e1cb2cd4ce0f5f9ba630a273c6758139f23. 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/FR59R2585448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7235b1d36065691a4655635e01a5946a1a7c8f350941324e1970d89495a7b8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:10:12Z), 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/FR59R2585450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e3320edb7ad662e67ead4731991f1af8ae7e0e351d7d2d3bf732ecace0325d. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/FR59R2585454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc590624d520f889fa334f50d51a0b4e9cdd9d6992f8da12b454d277fc62aaa6a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/US38Y2545883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa696e11f60da5ba954c16c72530640b9e47f5ecda8f3a16eb420b57477b096eb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DKO7I2501201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e0e7844f54b74e5d308b00a506da78c74a3e187d9423b38f0dc0f8c7e8f240. 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/FR2X42422250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddbefca5e9f6d9995f06c5e34fa658118d984dc4280c061fe945811f8d9490b. 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/DKCC52401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09328716b421b4a1cf2ab16de21a2388999834fffa1e766c0e28b188c23cb4ba. 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/DGA0H2417802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca864ee10a73ccf56e32e5f9bf4ca597ca75d063abdecb287dd055aa121d3cd7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBLV62113332.
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