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 0x3ee4bff62d15332423171afbb56e3ff9f632e301f34ddbddc1c015aabd2b24e1. 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/2a3f22da-5646-45fa-b3cc-6c117f0e46a4.json and https://artists.proofprofile.net/proofs/artist/2a3f22da-5646-45fa-b3cc-6c117f0e46a4.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 0xf2ab64ab275481a2ea8ecaeea62b341207128ecc2a6232df86a2baf6db9f5bd8. 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/USSM10403964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a53ec95c6aaffa07f37bc146b3004e6ca49adac0f5937aa5a2df6f33c9b198b. 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/USSM10403965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21e49469703407d96c337d981f59cd4eba3fa903121d5bfa0dfceed81ed28c9. 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/USSM10404531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb25aa4c7865ba5d50a9c5aaef0521a38dc7b38cdb6974d0c9c79769edb01c53. 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/USSM10403967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106215e0f843896d81f6edba392894bb4d9e23cccc7f0b18674053ef3abd6c1a. 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/USSM10403968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a21f3a548283ce9b8038014eb88a45f14aa97b396e7e167dffb4cd5f06366eb. 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/USSM10403969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced368a9da5513de89ac9f386ae80ed4c30506975a2c5f104da8564f0f36d97e. 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/USSM10403970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3675ce8adb3a660dd6e7f1e4a036cd7122b9240f907ec91d53c9cbead4ea45. 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/USSM10403971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a78cfd21143549efebeb78dd46582e66ffd938b78ab8dcaf6a9a19c573d57d8. 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/USSM10403972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24e0dff47de09b74405c182c343125499a5126d040e56d688ab5784dcc6f91b. 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/USSM10403973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e8a3540ff5dcd6b4db3a789ba9550c6682116d749cc77a013c5d0633062b54. 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/USSM10403974.
Hey Baby, Don't You Know That We're All Whores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80228c08206f4d8befc29ba3ef2477dceb191dd801407ce75b78ebfb1928382. 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/USSM10403975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83d2127b3519a1d8c4de91b67933d96ce8143e945fb4067328d4549c11f9345. 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/USSM10403976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8e3d609dfb0b04605f8025ff2d7fda2f24d6d5e69492febfed11106eb0c3ad. 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/USSM10403977.
So Long as We Keep Our Bodies Numb We're Safe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5108027aff52a0234310d63b8ca5955b7c913ea1d1b450ca7894c9c429b5259f. 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/USSM10403978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447791917e7da1a464869141d9ccd8d03be322131f32bd2b31d5bafffebaf35a. 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/USMC10200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f96fb9b0e4f1bd14c7d1e17f86b753131bb314163d5d4614a125a222c9ab0b2. 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/USMC10200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf335679155c28d2a3a03cae4f4d654173bdfa77edd3bd5af211868b82aaacbf2. 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/USMC10200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a512e7c0d40d579ee3e7f4c5722c01ec9f0832998d6e74872e0735fdb26250b. 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/USMC10200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5f460f1b407600c68b8af0cbfa2c6eb46b6cf6819b0d24a727f5a4376f20ee. 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/USMC10200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373c606ae5e53e2926482d1a60ef78fd0282f13ef06f8db8d605e197b51f7912. 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/USMC10200175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27028c7a50833635bc6ef1c7bec22b453ae1b593ef4fcfa928d15d66264add6. 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/USMC10200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299af4f5905332099ce3ba8daef7ee1db55e3ea592db002ff38d9635493289c0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:47:54Z), 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/USMC10200131.
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 0x65c180c33249a8766b7058f1fe64e2058136231db45466103e9e03ac40afc72e. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USMC10200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23f9ca0ac9899336fd9a14da1a7ffc7af89283d04c4cfc54165d115161ce719. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USMC10200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6dae1cee7fb3d5b346770a8f2bfb730814a752078c0d5ab4966e84a86f418a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USMC10200127.
We're Too Old To Write New Songs, So Here's Some Old Songs We Didn’t Write
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f239ab95ccc51a877a67d0de16cd05db14a2766415c7fc2d9be8906aa013d4. 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/QM4TW2348686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4b9d589b9267a268e1d425810a2ef8face975933f4ddf19150e403e5ec4e69. 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/QM4TX2345281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde54f42dfeca0fd57f19e5add2115a51c0ef2c51a28fdff46114b7c78e0baf0f. 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/QM6N22310188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370d6aa978bd66cbb26b3d9546e48da8c741e047fd55bb24c1cfd6b1ac792ceb. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/QM6MZ2302764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2459aacddb4a752793e87c2d47ba644fcf53cecaa66ccbc611621145a16dccf. 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/USBAL1300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9db4a5cdf03f5c6baa4fea6c5b1fc4969cbcc941fdd8b94e2128cb26176e2d1. 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/USBAL1300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8738d5166f4e01141925fce53fa2541bb5291dba741a33d063535e5cf7bcdeb0. 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/USBAL1300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a2f4c9efb36c36abdfeab586b5ee69b50233152530065eb0a74d18abf104bc. 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/USBAL1300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d47c37cd1cc7cf1ad4f15235bd2e472346080ae37207693d1a15d6cd6fa4fd. 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/USBAL1300021.