Pablo Grandjean Sáenz, better known as Pol Granch (4 April 1998), is a Spanish-French singer-songwriter and actor. He first gained attention as the winner of the third season of Factor X España in 201
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 0x8aa6c3656507cfb7ca4cc09ef74b82ca9c6d021192e5bd21ec59352213ef7a08. 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/6a386bc4-2527-4402-8419-1ad31b0225bf.json and https://artists.proofprofile.net/proofs/artist/6a386bc4-2527-4402-8419-1ad31b0225bf.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb0b19044ddf922b1956a0a4c58da08b6de4b65699c4ac86338af9c2ae160a2. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ES5021800395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f07fc89da746c34d3482a62cb59c390bb89bd1475c5468ebc0bbae50da1081. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES1022000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafb36d6a2e121f0fc0d53cb7fd7f45dfa47c3c2e5abaa39d61499951497df69. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES1022200407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d39abd8430243f99adbf081437e39b08696671b37ee1be82722e7102904fbd1. 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/ES5022202119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd533cd329ee6cff905e6fa72edcd4c156dda13be8d4b3370308935a4620880b. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:51:04Z), 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/ES5022202524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda405d9f5e9513eb835e3c1d6a251944d71870cf439e4b3052d9bb91c23d9dfe. 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/ES5022202113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fdf21f8e1b746f537975f16b03a33cb23aa742ffc39912dfa4b6b248abe6fd. 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/ES5022100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46852a22aea5e9161e7ab615581d9c3924276f57e25d2e4b43ed72c46462c1be. 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/ES5022100530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03b5f67eb4e4252c6cded9efd3a352344fafed4d84a146d622504a6c5015952. 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/ES5022202114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3ab13539b185d794519303dd263cddaf98ccae341d644517c1cbd0ed74e686. 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/ES5022101592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46576faeb282d4bbb33904a84fbf472233122b19e5d9864ddeadb6b432c48d7b. 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/ES5022201971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e0093c03c7678246b912da8f122d325abd8940f3521bf828bf8e662e04e316. 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/ES5022200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc1718002159008307ed08343c475b3eaeaa3dbc0e2804ad79fffa27009d321. 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/ES5022202115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a229a875ad8a9f9a925cbacef7ab00a4ee932a0da4c3f8aee628e5395ce4c89. 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/ES5022200864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cb6916432aa0ccb0f6a27bc0b645fb5f942a5308452f14d5a3224e589c4737. 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/ES5022200281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8ed6d9a74058491e19fb925d60b0a71f350d500f7bdd7d8a8e474cbc10743c. 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/ES5022202116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae63688b59f76c764d658084b4bf0485f093cef8fef70fd96e4e09de725391a. 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/ES5022202117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a9eca6b51003fa1e92f0ac314715b95cbc6b0d515a8298ac96c6e61f4f16ae. 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/ES5022202118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f20dc8dd65a2a50a6472135e094c918f8d4b4165705d8a18feb79af28261af. 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/ES5022202121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d39abd8430243f99adbf081437e39b08696671b37ee1be82722e7102904fbd1. 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/ES5022202119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566e55942cdc62ae431b8a38baa888c53e57ad247980afa63f00d120e77951fc. 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/ES5022202120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320310c06e8d5f8fb1066235fc0643f76b577b9251fcbd8147b86eb037f609e4. 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/ES5022302080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e21eec8a6c23b3dbd14d7ab2399e3ace52aa61c83fa47e5cc3d0677b4218c04. 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/USWL12100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e21eec8a6c23b3dbd14d7ab2399e3ace52aa61c83fa47e5cc3d0677b4218c04. 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/USWL12100143.
Cuando me mirabas (feat. Walls & Pol Granch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8555419d35dc40f9cb0e16de576bc08fe5e25ca56718ca9f04473afd191050. 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/ES5152000501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025dfb9e00c08095f4b6b0b2c95bbd70c97d9d04fa8753445a1ebf1812e3a45b. 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/ES5701901163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e21eec8a6c23b3dbd14d7ab2399e3ace52aa61c83fa47e5cc3d0677b4218c04. 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/USWL12100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e21eec8a6c23b3dbd14d7ab2399e3ace52aa61c83fa47e5cc3d0677b4218c04. 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/USWL12100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e21eec8a6c23b3dbd14d7ab2399e3ace52aa61c83fa47e5cc3d0677b4218c04. 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/USWL12100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e21eec8a6c23b3dbd14d7ab2399e3ace52aa61c83fa47e5cc3d0677b4218c04. 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/USWL12100143.