Artistas del Gremio is a Spanish fanfare-type music band, composed of brass and percussion instruments and performing music and street shows. It was founded in Ejea de los Caballeros (Zaragoza) in 200
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 0x184e8f586ff0b90ef17905f6d5582fea2cb125c5a1839290e8f027135b36713b. 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/4012dbc8-b6a0-412a-a508-aa2166b9e44d.json and https://artists.proofprofile.net/proofs/artist/4012dbc8-b6a0-412a-a508-aa2166b9e44d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Artistas del Gremio & the Musicolocos Dream Team
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 0xde3ca6db46cb1653132f93aca1f08cbe46bc614a467c166a5952e08335a9a9d0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLZJ2157542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a22e80659475913bc9de80c3619710649f8ad71a63be24cd0871ac068f077bc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLZJ2157545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b7ed6de9c39a5d9ea4fdb7e2116a87547fd46b60bea8ab1c41f1ef8bc74aa9. 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/USLZJ2157547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9322b735ed02ef7460b0520066faddd5f6cec17b282c161cac7d67838b87bf15. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLZJ2157548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc74e9ee27e4db8e3a707784b12a333330a46bd15b71f265291ebace288d2fd3. 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/USLZJ2157549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0948718fbbe7074a5202aa864d7f474fec2e892377530c4a13be1b8f489e73e4. 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/USLZJ2157551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e17e9f73ce4a7cddd41ff700769743de51f874602c06cde5fc0a7f647d87fa3. 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/USLZJ2157552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549f56dab30bc533e7c78baf946b5457fac92ad826a6b121b297b3b3f865b5af. 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/USLZJ2157543.
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
Artistas del Gremio & The Musicolocos Dream Team
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba562306fc0e95c18d923b511990884df982834990d1a4dfa7ee2201ada65ec7. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/GBWUL2011143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45aa20411834c5ff7be06e306743d3499a9c875b98d0484aba5bd737dc116ab7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBRKQ2056768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4147467d5d9a6135dcd45ad8d83643e61f7714847419a04898eeab85f260aa76. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GBWUL2133797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe822973c09c004b7f80eda384b11764cbdc1d61bfd60c469d4b411ae4b850c88. 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/ES99D2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc5120a68e02a5158e411e431edd809fc579c2f5b249c0888f5f8ed52db0573. 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/ES99D2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd236018ee5eb5e3e4bd1fc91c48f774bf8b67386ac4a2696990b9db882aa9fb. 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/ES99D2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc940a6ab3f53dbdb2d8652ead72c78628bed9940463707be70035040d7acacc6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES99D2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98301e768366bde86b981bb079ebaf85b799e11ec3d07493a858df2dc80c583. 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/ES99D2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57e6fbfaf45dacfce8d24d92b00492c5ce9bbaf0945f47c2c659a5063d9580d. 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/ES99D2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc6b0c6d1a13a12f42462ad18de8534d54e9c5ff74579d14613b1799198e8e3. 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/ES99D2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6062ae4dcc38c87a3fb555ffacd0aa5636927d3cc4cb1911e2e44dfe7543050. 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/ES99D2300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe822973c09c004b7f80eda384b11764cbdc1d61bfd60c469d4b411ae4b850c88. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES99D2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc6b0c6d1a13a12f42462ad18de8534d54e9c5ff74579d14613b1799198e8e3. 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/ES99D2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc940a6ab3f53dbdb2d8652ead72c78628bed9940463707be70035040d7acacc6. 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/ES99D2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75a9f030ae3a513c84ee08f72c8baee4f02f8452a2d1a531c678168ff8b032e. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:11:16Z), 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/ES99D2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0837cd0a9e0d6b0e6248187c556161cf83a13ca83de793820a069095715aa68b. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/ES99D2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b3bbdf4e8e90c93162b35e48b8385b3060f6b8353867d9ff6da6ae3342080e. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/ES99D2300038.