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 0xf66faac3afb9882aefd68e0dd326690f3550c2905fafb8264f01be71a73d748b. 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/61dc96c3-443b-475b-be32-cbc5af6a21fd.json and https://artists.proofprofile.net/proofs/artist/61dc96c3-443b-475b-be32-cbc5af6a21fd.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 0x4dc1132e65e21cb955dd1ef6763ba8a308bf4a0d86dbfecc80140b3d438ae4fc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NL8RL2509024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8b3abd6861ec3e764deb3604eae46e850e23a8ab3434e79f48e8e208d81488. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NL8RL2509016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1750f5afe060a876aa4df4ff56da0fcb71eb004c8c885acd51d94788586fe2c4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NL8RL2509015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dadc896e37fe4d30eacc2c4c5c6914763535d3b763eb8bcbb971b0816986ae. 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/NL8RL2509012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37de84f0e5ffc6f25a07766dc2ec4b3955293bd9203ca8d62bab23bf55e89f7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NL8RL2509010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17203222b60a8e0ad41352be6eb2e0019da42dc7b4c6e176b5d5eb19b16b0cf. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NL8RL2509023.
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 0xd054dfd53c22973d2602b489938668bf00b7c80b7d9eaacc46e6a6b9e25d1fc2. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/NL8RL2509022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe955a67d03b1d7f6e7ed6cf7d23520ae34fedbc4598837030784af54e79ceae7. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NL8RL2509021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030511c253800776ea76f8cbd7073ae9bd39256ab332637f94fff44ef3075a01. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/NL8RL2509020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3dc8bb7b25f8b8ec8656aa8f7affd2123d3ab8fc50620e4db59fc58fb6a12e. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NL8RL2509019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842e52af6375d8df1d84d22c8cb06139d0313f1ba2b0f52f90838f57917d1284. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NL8RL2509018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634e5b8646c19e6482f629523f8ef85477c0205cee565e3936555ebed88a11f2. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NL8RL2509017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf8c35d6d363ba1baeec5fb5374677125b23cf448041168fc59b127bd4a4ccd. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NL8RL2509014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf8199125a50586bd53d03b56a88da7acad7e9bc023effb1f3d906e56e0af25. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NL8RL2509011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa4c78d83f356b35e40a9e1c99ac009bf9844e6169b3d43c58f301869463ecd. 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/QZDQH2359624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da94bfbeea22867ea0a7f9108a243f263392ec870e7b02f30b80bbf88567273. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZ5AB1978856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff9d4edda18abd107f152f3e4bd89cc91e94c245d2f7d846411cd95eea2afd2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ5AB1978858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8ecb5dba64eca7c73d319c146299a1cebb5a694c0a667185d4d2fc81980f6b. 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/NL8RL2527969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d937b357b882efac98b32ff66eb715658d45f32d7511d263e84a6102412ffb. 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/NL8RL2517411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55aa9cb02377273e8aed747b70b15419734034a7c3d84212b28dae726b0f9b27. 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/QZXLZ2503354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41327c0a045dc2ff4d605901e6d5dbdee2d5413c5c8d56a8ec9499b9af1afa5b. 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/QZNW72406057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4154700453e02b6e71ac4d7ec0da4f5ccd3ff11c674df228f6b5bc5edaa716ee. 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/QZNW72401440.
Al Mal Tiempo Buena Cara (feat. Jesus Ojeda)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50ad508ddf24e78be76a3b2a0b867383b6bd49631e0fd3bf88b7e1c2b0f668c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCGJ1913799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6bd4555b022fb1298652e5e1dc5e1deb39646cfa387c02a83a5fcb05ea9483. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHZ51982765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe372e73f525ba07f20078e08212f903c1bb8f4de8c6f4f4ad71868527d34f959. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHZ51982766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0479f1c72029fa0723d5aa768ab8314c4d807baf7bf9f55604727f1faba853. 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/QZHZ51982767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e85ee7ddc9a3dac101684e9018d97dae7ab8dfd66d27fb6cc044c86e080bcc. 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/QZHZ51982768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d5eb1e07592344a2d9d0c209f8946c294bdad6fd5dbb4e5f72b8ec0cf9dc7d. 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/QZHZ51982769.