thumb|200px|Huecco, while singing for Sugarless. Iván Sevillano Pérez (Plasencia, 1974), alias Huecco, is a Spanish singer. He grew up in Madrid (Aluche) and Leganés. He did Media Studies, was an ice
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 0x447f031ca5de613e3af2a2e7cea7a2373ff8c410084e51728547df71bc5908ad. 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/fc0c87ca-0661-4d04-9916-4ef86e24680b.json and https://artists.proofprofile.net/proofs/artist/fc0c87ca-0661-4d04-9916-4ef86e24680b.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 0x825b59a68fc003ffdafae1e5ad3547302d3a1dd350712f58150691926dff0353. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ES5150620002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcaf3fe1606faabe0d578954fcda7d73c6b928c9c6e9bb1cf0e523920ffadef. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ES5150620005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c384cd6dcd501be7d856dd8fa24e5debd4bfdd53e05a7f2507ade578d75438. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES5150620009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb2619c85b65d15b5d1dfd2393b87d7333012049f348820dc49e96fe20c8793. 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/ES5150620010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4ab7da5076f7eea5ece82663fa2e3b985fc03adbf964add67cd0193ca4a02e. 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/ES5150620011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e894c9d9ac8492fc0f64f8e2d12efbdd6e78717a2db585c21fe854411e49c83. 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/ES5150620012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399bf1eca86a9e93aab7ecd05073a766ca2c3c531425e551df51f55222cc88bf. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ES5150800345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635feaeb04f5d8ac58167c60e02222b217cace287b8ed40fa3dada080920f323. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:20Z), 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/ES5150800351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bd2493f17f396995b8e9c001c9984da0df60f1405a6b04c65a7fc3fc80e0a6. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/ES5150800353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f34844e9e925b5f2f6409c9f5cf6f52808270de23e25db077fa33d461ff56d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES5150800355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b2b18f1beaab64609566f67a09a3f7122101fc48eacaa5d902025947e5b546. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ES5150800356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9db45d99b477589da1d7288c11fa2793525dc6d7a1eda1d61aa0a6f6f793ffc. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/ES1150800253.
Se acabaron las lagrimas (dueto con Hanna)
Se acabaron las lágrimas - dueto con Hanna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cacf64394dcecc24886f0eb3864977c877d396efbe04bd8433b7aba302da44. 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/ES5150800348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1bd7b28d5d0afa286fab08a91a2fa9d36b21447ecc1da61053f5e9442c453f. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ES5150900703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c67c2cf413e49cee54b2b82ec2303dfb7d5c4984db97f0397861823a8801a4. 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/ES5151100633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849e7a4075fd4299e1dd55e15db1d76771af114e78c82eec6522137bbcd00688. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ES5151100640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064a6cd7854bd08d18779327ceb78cca55fb1d042dbef4913263c62a0728574d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ES5151100636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd956436ccaf5f723407283ff2e03b9343b0028058d6122d5d5eea78c921be03f. 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/ES5151100641.
Amar en tiempos violentos (feat. Papillon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dc87c27c2bed0d31c360665cc979a0b13ebcfb8f9df395add3c47865d6da4a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ES5151100639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81419c54780537602d9205fa2fb5ad25060e868b2df36730929e4339013162ba. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:49:22Z), 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/ES5151100643.
Sube la copa (Official song of the FIBA Basketball World Cup Spain 2014)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b64f8c1ace7e0189b3688718a704f31e53c565b1f2b8c5893a8daa206c57fd. 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/ES5151600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bd1fdda1930e21f58b3abebc54f40147341a7b32eb6f89bc30e218f8d4aa35. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ES5151600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9614a9c1403d13b4ab3abc917bcc350bccc8841542e00e0dea5e5156403d0865. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ES5151600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e272bd479b4ce708b7dce93e4e2b5662de1198b68b6366c5b3c08ce10606ab. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/ES5151600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51a0851641d55ed752c302a1157d4306edc917167c2eb5d3e5507fd79b25396. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/ES5151600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1214f8f4795d4345aec9888a8dc568e64a9d161a69fcabd8668c3d3592364a. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/ES5151600030.
Sube la copa - Official Song of the FIBA Basketball World Cup Spain 2014
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a036c39267eec86b00fc5ba21252a277a37b7cee052c95ed68fecc50569289a. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ES5151401598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2425b2cdecbd23e56023b85f50f7263ed267299fad52d251c705db605df5c5c1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES5151600800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88807a8305f27e045b1f27220b9dd5e597f37cf30bf8bf566a36c41d2de4f8af. 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/ES5151601974.
Mirando al cielo (feat. Rozalén) [X Aniversario]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fdf45cd31eaea65119c9130382be4b59c3789b3e6a66484fe2bcb32b4e271c. 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/ES5151900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8504a364bfa1afcb1030563a366c16621d4bc963f05b3155665e805242b6bd52. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ZZOPM2117977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a8fb898470970bdbb8b3b94c7cec023a1c1bb2240b474277e35695acd6fad2. 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/ZZOPM2236929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f9bf5b22c30466cd470d00c7da70e301d5749b5b41ccac022e3b61a5d5a645. 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/BK4DA2320791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d92813abe6557777fac202e04fb85cccc027358f8ccb5fe297096ec3853065. 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/BK4DA2405197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181497e20e730418d99bf8f6929fe456dad8c78fbc3137957cccbd54208d3137. 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/ES5152001070.
Mirando al cielo (feat. Rozalén) - X Aniversario
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0657218ffb9af75dda0d50429ab29770001b1225a21545e2fdc4b80036c132a7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES5151801255.
La culpa de todo la tiene Def con Dos Tributo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107cb68bb3b80661f828c6805713922429b79a905319e98ed3564ad821077f37. 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/ES5151002454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547cfafc11185bb56126013d1179c10b944547fd21a3c78331db309bf74b81df. 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/ES5150620006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca17de4c732c8e76ea635bc8d5b8ab2b6e2fa9bb6a947c89ea204912520ab60. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ES5150800278.
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 0x314e0aa39703321baa697e00c0ec69c0700a4fcf39613b427dbb6209d55a678a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ES5150720000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0fd0f44b49110a8d58158b3a284241dcece539e6f2c438ae4c7328182e79e1. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ES5301662889.