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 0xe122491b47fa880ca725bdfa31e2cbeaf9246fd1af910f73a1b42563593742b8. 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/180c8b27-c8e1-4000-a57a-27616af5f472.json and https://artists.proofprofile.net/proofs/artist/180c8b27-c8e1-4000-a57a-27616af5f472.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 0xbc332fb03b4714782919a97db8df72cffe6d6b5158ce4f045a89bae1e1c185c5. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/BXIED2200266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb02ff93ea3d745460243afbbf3a11e369dc19fe5495e1524c7555ed9e5a58c2. 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/BCWZN2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76810c157863648828f7b4f120b0b826b10eccd8ad17edc699269a70f722a1a2. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/BCSCC2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4786a08ef3d3a6f3749e940295ae8be94752c874f78adbf85e5f568b22388e1d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BCSCC2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb24d92f700e841b0c066f23c0c1c33d43336c21506a1263df20b732add51ccc. 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/BCSCC2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8432c6110fd2eb3731faf532a84ecb7d74d63379b62f82df85f46ccd0bc8e077. 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/BCSCC2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfe246fc87fe8e1fae386b80c74adbf062e02734816691fb01ddeddade26049. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/BCSCC2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9533e59b65d1ef21215183a5c04ff77fdc0d62de8aa62df01171c9f68df86517. 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/BCSCC2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897d5ad069076a7bbaf6437e9f3ec686191455b71670fe5c130adb3acfc5f701. 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/BCSCC2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684898aefacc4243d0fd9738ea0d12e51020464d186c8ad897c6249aacb8f09a. 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/BCSCC2200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb050d799fe4edfb3ea938322fe21f5dcc3a1a1b2584c48ee43222886d0a4c5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BCSCC2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeff9579e9a73ee954dbc0a2f46aa371fcec43711cd31e84b40b3e8b75086f64. 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/NLQ8D2201195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508b9c07633945dd441dacf1407fd4786e650f04c5ff4ec37938c7dd34e24606. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/NLQ8D2201199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91afd1fcf6853e5f330d095cbc81295c36cd546b9f1045c351f6c28f8e297634. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLQ8D2201201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048e54da79cf428630ff3ce3b9ef969f00569d4517e1d63716f45610c8bec340. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLQ8D2201208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9533e59b65d1ef21215183a5c04ff77fdc0d62de8aa62df01171c9f68df86517. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/BCSCC2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4786a08ef3d3a6f3749e940295ae8be94752c874f78adbf85e5f568b22388e1d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BCSCC2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ba5b28aa731805c0cd835363fb5fc59a20f48f9f7ac961f5edfdae0a0bff75. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BCVWQ2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c28cf5477518a955f3186debdb39f591acee9ede444fb60acdeca85077714c8. 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/NLQ8D2201111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4d0049c00cf205dbb6cb9b3e4419bdc67764a3f157254943409994ae711c5c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEXN82297887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176afc7e877be7126a2bea359a9a60b7b7accc6839ed41cb4a9a09173a7a7bcb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZZ52151001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3916fbb90b8c9c04a3e7d7054ac4267c5061e22f7509be21f06b200d2d539c7. 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/BX0BA2100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8910c0e47bb136a35801b06fc3506a54f259729632d901344278b7626b23c2. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BX0BA2100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ca36c224f63d7f9875836ce5382babda7f4fee0fbe044c4ae6ea79b7e7d51f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBSMU9432887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d27dbaad2eab6e89d20907711e7f374d95f144e9596ae3d77d29d136937302. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BXAT62000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a7942e25ab14f6185db39dedc6c5aa942f9f201b7ff8ccfc4bc213928e47cc. 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/BX0BA2200067.