Nosoträsh is a Spanish pop music band formed in Gijón in 1994. Along with releasing records on the influential Elefant Records in Spain, Nosoträsh released a single in January 2007 in the United State
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 0xee1e9e0ac268c1d11ed14074c082471dabc51aae925a559ec917938ccf069702. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8f1d7e3-3a28-4a87-874d-3c85ef2975a1.json and https://artists.proofprofile.net/proofs/artist/c8f1d7e3-3a28-4a87-874d-3c85ef2975a1.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 0xa606a1c18b4637a4ebbe520c607ed638437d9cb8d3f4cad917a1e5f56e1f9673. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:11Z), 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/ES5029700666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3aa79509e3578dfd672d965f3400ae98d3f56fe03599e5a9d41b5ca4f1983a0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ES6640200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147f9b9c2638cbeb72c52154d8dc640dd4b0f0fc4b3957611ff7781f3757158c. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/ES6640200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20daa60bcb185913a2a33d28861cb803d972581a333f5d4f07469c56f005af70. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:33:37Z), 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/ES6640200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0901bf68eb8618ea8b4d30469368f00dadfdfbd0813a54c577d1253e906e7308. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/ES6640200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9805391b09f7e00a22719e6c44522dd50bdfd0506b5bd4a99b2f41c639d7721e. 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/ES6640200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d2beabdba6ebe7580dd8e010a40afa19f02b0b8fd26826ef82103721551ef7. 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/ES6179660072.
Homenaje A Family (Un Soplo En El Corazón De Elefant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7fcad7eb500e51c77258f9414522c7aee0706f230d53d4b920c4e74efc07ab. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/ES6640400003.
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