REDIRECT Portugal in the Eurovision Song Contest 1999 Category:Eurovision Song Contest entrants
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 0xb40feb1d276aadb483e9f23844a74d701454ca879dd5fd849c3ff47364b97075. 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/5c0f653f-fcd8-4100-a8c3-aa2d2bf76b97.json and https://artists.proofprofile.net/proofs/artist/5c0f653f-fcd8-4100-a8c3-aa2d2bf76b97.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 0xff5a42d4ee79f71721caf9f252950f5156a2bd1207473c3d3369fce374fd1011. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/USA371590918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36b7be346d3d0782147617a4ee7491f057e0e782b0f7d27b12364019a2f6904. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/PTES10601201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fc5b08238c6225eecac189d76bc858f9adead745718572863d3283b1c24dbc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PTES10901603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e83fdca1be25ecd4aa0e53d7182ca62a457543691e1e97d78f0861bc1bf9dd. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/PTVI11300368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25a3b570ebae4ca0692e74d692566984ffeb72b450608cac7a482aae3c27154. 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/PTVI11700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bbd52d839961ba5f13346cbbf7e0a5c50a2878359306e3c6989c4476a63e95. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/PTVI11600068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d80bc7219566cac758db4eb5ee3f4ba64541dcdd92c4feecb46a36dbc6839c7. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/PTVI11600069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa951c984c1dfd358edbfb41d7ceb324b8e5128e88cc340846ff0941a6aebc047. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/PTES11804504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedab0bd6f062dab65b9478adc598103457c36ffd7ba145a8ab9fa9d447106e7a. 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/PTES11804505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72394f21359fb32014b5854ea75d4cb82c92cfbbd481605b47994c080c37932f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/PTES11804506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdc44be7d51d5b662499de8f1365150f64f5abebf114562c906c8957852da23. 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/PTES11905714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758a92371803268e3a1b64a6e69d3f0eccc1ecdf068a153a13b38a38cb05f33d. 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/PTES12101004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178983cfaa8bbbef2653ea19f7833bc1c2c46702e060d7c39e0a12ded51cad0e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:34:51Z), 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/PTES12205004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fe19cd95e5832b9b2265bc1df2e83635db8bc95db7ebe28b62e2cb93583c79. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/PT2EO2400225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fe19cd95e5832b9b2265bc1df2e83635db8bc95db7ebe28b62e2cb93583c79. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:15:24Z), 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/PT2EO2400225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bcc1aa5340bdf001f10e1d3930464afed4a93d0ec693371d40660ccd15050a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PT2EO2500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bcc1aa5340bdf001f10e1d3930464afed4a93d0ec693371d40660ccd15050a. 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/PT2EO2500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3c57d23f58636581ef668c5a08c0ab027f23bd26a381f52d76cc0bff0a0508. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/PT2EO2500342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14dbb3433f768c96743ecaa8c95057c183e12c50f9fb3d9bb59a5fe52b6f440. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:16:52Z), 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/PT2EO2500410.