Alex Ferreira (born August 14, 1994) is an American halfpipe skier. He received the gold medal in the men's halfpipe event at the 2026 Winter Olympics. He also competed previously in the 2018 and 2022
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 0x5ab63bd43eb414a8ad885dcf344ed7043bd3aceb31b8559fc23d6ff673ced00c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d4b201a-32b2-4a6f-9d74-e89dd01289b1.json and https://artists.proofprofile.net/proofs/artist/5d4b201a-32b2-4a6f-9d74-e89dd01289b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Everyone's In Love With You (Spotify Singles)
Everyone's In Love With You - Spotify Singles
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 0xcddf0100e042f767d0458a545eb5ec1039ffed88af9a610381d6058d7b561076. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXD782300951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cf28839d319df21da680622a42a58941e4c056fee9129822b101ed792fd309. 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/ES71G2413209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c0f7109d2e3b9fd25db77e40dba02990e32bc41410e931aa56c979cb9c8715. 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/CAPF61900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4959ced7b4418a432eab0c10a6a0352ade25c06b1698ab8ee67497d6a23dc07. 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/ES71G2153562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cf28839d319df21da680622a42a58941e4c056fee9129822b101ed792fd309. 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/ES71G2413209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4a8fde838357579c58cca393a8e48fb46eb9c73dd60df0fac73cfc25416e88. 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/MXF011200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cf28839d319df21da680622a42a58941e4c056fee9129822b101ed792fd309. 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/ES71G2413209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafda58dd82a426f9982f00ab22a6893a11efa9865416a9db522c5d6ec52ac21b. 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/ES71G2412038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa750076d1da871df33c0ab72ba25ba9488b037ea6fcdd205c7f81aac294bdfe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ5AB2160744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2877f8476f5275175f6580682d10a1402d7b8b276b862aa2c2defa759721a367. 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/QZ5AB1960516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b24a93d7c6447cd0b0422a0f356152e4d15316868657f30de23a68b5db2f839. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2332627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3238f51ba51def351ffbc824afb043f8d2a71629f285dba9f48464329324a8. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ES5151200526.
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