Sarria is a municipality in the province of Lugo, in the autonomous community of Galicia, northwestern Spain. It belongs to the comarca of Sarria. It is head of the region and the most popular startin
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 0xeca2dce0e9a870e65c2ffcfcc39ce76409126362914e9240261e05dea9f5851b. 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/aabe282c-dfe8-477f-b85b-79777a7be78e.json and https://artists.proofprofile.net/proofs/artist/aabe282c-dfe8-477f-b85b-79777a7be78e.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 0xf0fe56cd3c86be9df757149904defb53b64e005df53cca4982ec6c223d3d4407. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMARG2050471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb142e4c0fd06e2210481179ee157250d6bad68b5dfba8bb6996f0002a3028ccd. 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/ES71G2147355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb142e4c0fd06e2210481179ee157250d6bad68b5dfba8bb6996f0002a3028ccd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES71G2147355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c66d74ca95dade2e6b654e642dfa6cba05fcbd5a05c187490bffebf05d94ec. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QM4TW2478973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90157a8dd36263bf8d029ad3411cd96db5c880e88bfc76eebfb45ff0f8142d24. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM4TW2478974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b79c1a7b78f6f689e65802a98e4747fa265069c0a64c5a8923e53ad4eccb962. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QMFMF2355384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab56cbcd5d0f9a0141201b1a814f1d0a6f880517ead94a17af98a6a2430cf86e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMFMG2367545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085eae685a7ffea5554ca6f9d6894342a7fa30e7a917168ef6cccc7d78ff41d1. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QM4TW2478978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff9c54c7d2d58a2158ddb21f8ca998554b7f6a0ed235d27c02ea371c5efd768. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QM4TW2478979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b6683d1ab1247704d8eb138a720852b2fd052af26f2d778bde1eb9990a283a. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QM4TX2561588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f46110ecd76c5bc07ecba08f4b3212e5f33d86ef79c73aad8822a4fb4a4c181. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM6MZ2510085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f09b4a7e3834ed8d42b6dbc66508c3fc823e032d00f8ec7ad7ee194ff896f27. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QM6P42543063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f46110ecd76c5bc07ecba08f4b3212e5f33d86ef79c73aad8822a4fb4a4c181. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QM6MZ2510085.