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 0xba0f0622b1ff7c9daadd4e3a51fb07fcabfc4229e37d6c5ceb92243821e02bf8. 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/2073a4ff-d052-4d38-a434-619230aca923.json and https://artists.proofprofile.net/proofs/artist/2073a4ff-d052-4d38-a434-619230aca923.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 0x954cdda35afdca22710cbc1c0bdf07cd1a4fe81328cae0778aa228a17eff2367. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USCGJ2230569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0663a7c9e34976c690dae81fb7986791a24cbeb424b405c41f526982079ece3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USCGJ2230570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e288bb08ac9f00ac84c245e4177a521a77b238258ce219b681faed3ca7522bc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USCGJ2230571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ae891b1a121ba6d7679e7d010562d1ea4e38c32339d3d53dc933ad1806a7f2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USCGJ2230572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66ebf95727a09b2637b1f2cbb7247233ef9c9c069718dea4a28b1ccbce6d6d9. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/USCGJ2230573.
Fine and Fancy Fisherman: The Sound of F
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199652ef7cc8d3c1712730634e62a812cb2a10cc20d587c03ec504bc583c75f5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ2230574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d93b0fc37b86667a77f6251c7168033f0b45de5a559c68b489c56dbed23e5f4. 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/USCGJ2230575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ae96ed61e1119510b96194cf576f530da00194236a0e0a5c0355847917bed2. 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/USCGJ2230576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cac383ea8fc114f63f947107a944cb419d90947b7c99b30c94fd87d529554a3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ2230577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa799e2859d0f36f96f7ce5f75650fb54f9d9577f5b22b9632dce9b33eac62dbb. 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/USCGJ2230578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a1645e67598bf4ab0e6430c5275714d8395bbbb467c519633a54b0b69ff8f9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGJ2230579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fea9143bc7b1c84b298f472e53e383a0db9ba09d335e1c24b65bd5d7e0bcb6. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:41:37Z), 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/USCGJ2230580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0a46a613f2c03b85dbd157aff85bac6cef01e0c787ce1e7f0c5546d5912f6b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:09Z), 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/USCGJ2230581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e590989202c68ec1fb359189b84e573febed2c1eec9d6e24156660d9b9630c9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:06:27Z), 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/USCGJ2230582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491a0b05dc07e825ec87f450d1ebb182252dd39dba05521f0e012edd1e8498df. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:28:30Z), 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/USCGJ2230583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d35c984bd913eb757a12b5761c75019c0beef573425542aabff9d7107cb1b3. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/USCGJ2230585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803cd606bb1213c55667e2eb0c8341cd139ad3430ba6b8e0f7c0c058521206d4. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:12:43Z), 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/USCGJ2230588.
Bugle Music Everywhere: The Four Sounds of U
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2d0557590053f246f8c621b2c34fdeadee75dc1ca1edfea950b5f2dd5047eb. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USCGJ2230589.
Saxophone and Xylophone: The Two Sounds of X
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f99e991814d18aaec98a6089550d8218a1daf4048953bbdd1320275d81d9ed0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGJ2230592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb79e86d1abd4e89b550d929ec97db6ff1d5504f6c37ecfb9b28d261ba963e9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGJ2230593.