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 0x943c3d143825d5c5e10bbbd07ac878889381f62146a1e7d867100a6c3387ee8a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7221b7a4-e633-4981-a99b-b6fea26b291c.json and https://artists.proofprofile.net/proofs/artist/7221b7a4-e633-4981-a99b-b6fea26b291c.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 0x8d7e7f04ed553d66c76fea9ad1bca0c5ab3634931c7d1a39069d07c0dd9b99f7. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/ES6900400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b03645e88c49f62f20551240c705d63ada2e6c5770e33416628fcc7971b891e. 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/ES6900400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2338191e6848d0a5e04d6fe91a8ec5978b423731b15324bc10406c70bf62e0f. 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/ES6900400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8d18f6749b78834cf38cf1dfad44df681b8171e64395ce1d3fdc7a0c3302c7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES6900400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf34deb646a512600f8ab337d264ddec8e6f77b1c46643225a991832385c8e28. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/ES6900400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4085d9f8268c1b41920a2dab101478423f26e75b80e5cdf6f85bc430eff1ce2. 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/ES6900400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33506c9661cf7f9e9c70edbac518ae653d3d8b50a56de42715600175db0fac68. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:07:21Z), 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/ES57A1000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33506c9661cf7f9e9c70edbac518ae653d3d8b50a56de42715600175db0fac68. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/ES57A1000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b68d798825fb17f53c5b1db2360698671f9a2efca4d548ea323e7d3536b138d. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:26:23Z), 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/ESA571101001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7e1c7888f64760605620b212310bc57c1a68c6e330457b92084af479ed2555. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ESA571101014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49da385427e58649d932f1248858c35095326b07e2d947593670612559cb76f0. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:10:40Z), 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/ESA571101002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2dbe02c0abccc310ec6f89303aba450bf2bdebf0041e2e2181650cd8f5ebd9. 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/ESA571101005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bff4c4020b9a996c26a6ca715bbee655bde6507d087e1d723be2e7ec3990d4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ESA571101008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce3f2993aa6c59849f914f68d32a4626fd65f71695881929fc11b15071633a1. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ESA571101020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993be3d056d9c9f1f6c8fd40a1e0d3dd9a257fe30a9062ef2ae16a03add597d1. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/ESA571101011.
El Verano Se Acabó (Versión Acústica) [Single Exclusivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b4c4ae8da57887c5251ebdf5036c565d767c8711fb27cd2011bfe69852144f. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ES57A1300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15450bb45f58ff72edbd1d0e0ea4ec49cea4f4bc365df43c8e7cd53d43fca8bd. 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/ESA571700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59918ee010826017e774116b5b3384e2931b34b364b2a9cfccddfa920735419b. 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/ESA571700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ed200672671627740841789c4bfb681de1b07bf397aa2fe98687c7213ebf90. 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/ESA571700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6689a0362f685fdaca0ba56333b766d372082c12f44791e153fd9cb53deba7de. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ESA571700107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0141decd6a6f25e23bbe90bb6fa6d4d5fdb08310499674f4c839fda2af2498. 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/ESA571700108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f51f8b285d8e2cc9c4e4452b8a69928d58cb3ca2f67aec04224db2ea8bf823. 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/ESA572500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0b682c4d4255e8b1afc2e3b60247e9d9aa02ae0eff777c8d47c9675d2660c1. 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/ESA572500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f51f8b285d8e2cc9c4e4452b8a69928d58cb3ca2f67aec04224db2ea8bf823. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:56:56Z), 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/ESA572500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe8014039cd4cfdee15bb5a909d43be6448529f1277a74ad0c7f09cd3a5b41f. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ESA572500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f456a3d426c2879e7238afa85bb7a0115f481e4b7198f255ff555dd666e44b2. 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/ESA572500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3e4202b5813f759b103b905031f5fbd09f38a0a5d42fd73367db066e6dbf95. 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/ESA572500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51430b689e9a4cf309b9dc90cb788ddc6edaab3912ccc7cf8f0ea82e3e6068aa. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/ESA572500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23d3bbdf7974ae648aacced5107c63393b22463b605479f8e78c5ab0a8072d6. 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/ESA572500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2dbe02c0abccc310ec6f89303aba450bf2bdebf0041e2e2181650cd8f5ebd9. 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/ESA571101005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a1ecebcbb797c6a877ab0d6d8f7e530d43ec19e6657884c9720238d62940a0. 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/ES57A1000031.