Carda is one of 41 parishes (administrative divisions) in Villaviciosa, a municipality within the province and autonomous community of Asturias, in northern Spain. The parroquia is in size, with a
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 0x10692f6a21ecf2a6f8debb250e0f333294164bd9b5dd39c24fb1b81ca3431005. 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/3c3e39a0-a463-487a-a781-8dea0786903d.json and https://artists.proofprofile.net/proofs/artist/3c3e39a0-a463-487a-a781-8dea0786903d.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 0xfbc830b03d0c75d6ef0f14ccc46697834a20ab84075b6af1a257f05722f69f6f. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/AUUM71700808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01290a45439e954514a50dc3b3ca93df9909aba4212044c7a6a0026eb47f98e3. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/AUFXV1800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321225f2f8acd4c821e77b68881c1e987136a977677f3a87cba6773f039c28f7. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBKPL1971219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8ba06addb98947d86f94d08aca27af57a065810244924edf9c80d1f3bf5ccb. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBKPL1971220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e216aa48e977cf85b1ebb1fbf96e24adc2bb3a3b4935bb89d921b623e24ce81. 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/GBKPL1971221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15da35b263b00d09499ef03af5260f2eb1f55fcd6b1f06da1cf708fb8dbe66b0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBKPL2015551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e59a5697d0ac6bd76a8098ae14bed5d07076f334ea3e6590530533a8f64934f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBKPL2015550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda52b93c065b2c7d9d3cfb279a8a51ef6d8df4ecbf5cc443b24951b021d22e2. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/GBKPL2017575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3549f375e478b8d13ffebdbcdbc3da425b5b6e8ab6f5c7776ebd178accaa9ae. 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/GBKPL2031075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd7427b9341df7df91e65faa3a65b2841b1934e9e5ef1a53396a43fb14011c9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QM6P42346953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47189c6df1e20c34f88d064cee1d7ce66e6f709c30036e2bf254b10ddb3cd7c. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QM7282321035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab743cfcce963b8b526e2168842e9d4aab6d498e791c0e0c4fa5549eba86eec. 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/QMFMG2304300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fe45d2d81040ef0826c7e3d8efbacdad670be092a4ad0385dcebbd22132697. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QM4TW2454435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b3ccf8e3a88e3dcb5852a6c603adb1ed36301338e5297ce068a1e209001ea5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM4TX2498527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494460c51518eb9a02b2963ead92ecf7df282a704e51a8a48821e23a964ffac8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM7282485509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba61801c4088456338cf9ac6ef54357b78e76f4325101d601252cc19d280fff6. 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/QM6N22480660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354ae087fab51a58d77ac9a9f0cbb8a75ad4720faff34f3ddd374fa5a97e00fb. 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/AUFXV1900094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac37a4ee0c00eca07030e4c1d9b42347ba72545062a212a02e69c9928fcdd6d7. 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/GX5MY2480466.