Spain, officially the Kingdom of Spain, is a country in Southern and Western Europe with territories in North Africa. Featuring the southernmost point of continental Europe, it is the largest country
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 0xefa204cfea6303dcb3ed08708483982dffa89d5c194913c76d439b714c47e477. 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/914f4258-3df5-4dd9-a94b-49a087ee80b7.json and https://artists.proofprofile.net/proofs/artist/914f4258-3df5-4dd9-a94b-49a087ee80b7.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 0xbd2563c569dcb19ce27da344f445d2f7b5612451f239105527befebb7ce7c119. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USRY20411127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba20a36587d6119c96bde7db842f5568a2b49af1c1981b96cb2ec50e16c80b7. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:21:30Z), 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/USRY20411128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec39760812f03d08c5aa298e4adb5d311e1165be6488b6e8a706f7bc31d88d7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USRY20411129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c029bc29e686c1a994496ceef98459e91764957c399f3a405c502f1fd574477. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/USRY20411131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46631da93a3f2173b304b4741574743695c0213c76f14ab4566d4cd49817b171. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/USRY20411132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d96c3c9e61043bc669a6599e88c145cd3c835889f53c6558cf508496ae38d6. 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/USRY20411133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa02afa438af0daa287ca1a0c02fe35f803224031e6296c983733fd33f1251ea. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/USRY20411134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cbac50eca5f7d719be3ab5519f7e1f4bdca3e07950e9a884e0dfcc3eacb3ac. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:22:56Z), 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/USRY20411135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75834f8307712b1cbac70e4db4c9a8c6311fbea64b965f4fd3e2240b1112418b. 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/USRY20411137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b598bd17f8389898f28ff30ac935e639b70c74776bf1300e1837fca7c6c68bd. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:37:10Z), 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/USRY20411138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4998af30004621b85d0b9119e0e3719c8eb2ca24a019c1217130b0f105c51bbd. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USRY20411139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9f9968a371db752b6d43b7387d166cccc42cae2d99a89da72fbac62ecd39cb. 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/USRY20411143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c49fe95a47bfc36b2a2041a5fe01cab8621130176c71eafba5860ac2e675e9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USRY20412564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ceab322d111d4d16b87eb38e58a583a59546ee98599b04ea37108aa4f3882c. 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/TCABF1288830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a04636c191a2266ba88d359d5678890511ea8f56fcf1fed27c7f0c1d854687. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEE351211190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981efefb0244dd8bcea7b5fd73cf4a8a1cbb100cd2678a7c93b00a750b175f22. 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/DEE351611924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981efefb0244dd8bcea7b5fd73cf4a8a1cbb100cd2678a7c93b00a750b175f22. 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/DEE351611924.