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 0xf892f0793a605568573128a19f375cdf67338abaf7f9d208b8a06f1eea8d6394. 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/c9a9845f-fb96-498c-bd85-72e3c1efb5e9.json and https://artists.proofprofile.net/proofs/artist/c9a9845f-fb96-498c-bd85-72e3c1efb5e9.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 0xd0c3b4de0a6d911cd8ad764dce386389c4f640f608cc06769ba16aff9a0e46f5. 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/QZTVM2298152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eeceb4eef07a7c0f3f088812bb4e7719113b2e92230f708461c86131dbb98d5. 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/QZTVM2298153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb906f29e82493a73f016de229f96acf9653cdfbbf3ed0a62482eaaddece9b4. 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/QZTVM2298154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79767fb1406056530afe6e2829783ff06710676d4bed819fa5d51cae080d53bb. 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/QZTVM2298155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08af2a100f0d632978dca45217450a57f179a2d38fd7719b603dc46be57b6d01. 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/QZTVM2298156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d816b87c3769afa9153989a589d6fc100d0ef060fc2dce1711fa2d6cabd5ab. 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/QZTVM2298157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0dc6a8f8a73f1194dbcc5823807fde3939aea66693c3ef0a9ddec14eff2e48. 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/QZTVM2298158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3cd7e4eb26dd3e0d83410f8f44db89e67ec7d170b40cc2aed66e82a4ba0990. 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/QZTVM2298159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14d30ba8eefce162455d9c8be33e3a23d6385948a3571eb6fc89c0f16612c9c. 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/QZTVM2298160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde38b1044673744387f30b78c39ff97b47ef935a566156700bc252d78744b28b. 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/QZGLS2417517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412f93924d84af3513e90afb3b279a82d88d27427d1c7e49652edf37fad3e020. 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/USX9P2003502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d4d35870df3e4633ceedb0edf92206361679121a01729e40780b6f14a25e0d. 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/CLEM42100999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde638a89d6873b0919ee1879633c2e0e0b954b6cd282a2bf16610e2e3f38a30d. 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/CLEM42100921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe10d5e2b684cbc81e406c5159d9930c04b3dc699620093971d5b82c0be18717. 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/QZHZ42297495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677cbbb00c49e3e5d930fbc65938e92d636f741b89aff8cca6860bec73321140. 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/CLEM42100906.
DE LA CUNA (feat. Lamelodiadelhampa & Best)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01b55a94282bb3bf475f871eb6e4920d96020117d0b5ccd53ddc05ec372f09c. 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/CLEM42100980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97be4249d2666a8643d4df119f2be1a9e96333fe8ed4039d6a76dc628d7e7f68. 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/CLEM42100994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77f7cb5a10eb5afc8b5e59f06aa477d31d543036cac4f775d5c82ecf11dbbba. 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/CLEM42101012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1e14cb42cf2b021ef37710fcd09d360c170d01bee7bdd7308bc59d44743e23. 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/CLEM42101013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee68d6dd63630b4de233ef02066db013f1a0f91f5f9abfa70ce39bc1b45b68b. 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/CLEM42101014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f225d84238b26ac1890e3df9e71e61b3cdd9d09d85ed42a1f882bcaba54545e. 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/CLEM42101015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac122a80c412585dcc4df43c5013e408352e9b66910fa8e1f2833de7e84a66c5. 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/CLEM42101016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e71cdd4de3e0176d4153156b87009f7983d963430473ac29545f31f1cad68c. 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/CLEM42101017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f587aaad87b44774ca103b4fd2fd22efa365d9ee4d90e3140c71728840d80d2. 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/CLEM42101011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2a0e0a730be6146065116487ab09ac9c3fae12ce5dcc37f783890c4e3c0662. 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/CLEM42101018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe073911a99154a9edadbda0ed7f315b2876614c466274e3a1da67c08a6a5cd1a. 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/QZNJY2415765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a2179ee8275c7e109017d4cddeb20a7ae310051d5232f92533d357597c19fe. 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/QZK6L2068779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4a7510a8f4b69dbf16fdc3bad5c123a483213eb853293fcbad228c95273c3f. 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/QZNWW2031906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580af1480cf3ba6b4c221879c8c6768ef9ddbfcbdef172c25a207208473356cf. 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/QM4TX2581515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687c5ea121bbad9feae883830f506d228724208945142652fc79c2010559178e. 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/QZGLM2583615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de2ab77adb7a39f0defe5f0c150505df1343c3b1bb94269ea48962e024b1419. 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/BK4DA2459250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aee9be1e8892486a71a389029d28cc94ee9965dec89c04b12cda9cdf40a2885. 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/ESA012463682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60758e0e2b88c0c8549b996e4082ea6b616706983401af4303999be2ed895e93. 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/BK4DA2429405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3313100b2fed4f9aa724b89d1aa03fc0ef9feb88cb9142420313c16b7ecca7e5. 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/QZMZ92428337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74e190d710d8efc7b0c07fb43b780e4f5aa8564516628890fb9b73c7ccc9d56. 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/QZGLS2420723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cb784469b79228dc14678199b9d6b1fc765309554a47016ced4716fb74236c. 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/QZTB42264144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2cc104978a4eaac3477e19a6d17121d84c05227fc5f1198e391da1dca3ec27. 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/QZHN72149595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e587b83ef84cb978a8c2589232386f473f4df97c6d79ab543d7d84b189a1ea7. 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/QZDFP1824737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c74cf81d4469e8abc01bc9f2b6e2b93312ea6f274d02358de0eb060609e8245. 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/QZHNC2084048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a6a612a45a5e0646a44fe3be2b57f4eb6e8a982fa4d4c8fcd0da6a3e9e9510. 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/QZES52133267.