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 0x65e6ff495e429db38cda3f0737f5d2446b90bedb8ff85e626920deea9eb62a58. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2975069-57fc-484c-84a9-b1062f873ef1.json and https://artists.proofprofile.net/proofs/artist/f2975069-57fc-484c-84a9-b1062f873ef1.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 0xf388abcd13f29d1a1b7a3e7c03f5d5945773e7dc0550239de2e65c17d7fbe5bc. 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/USL4R2308865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8125893e9e2766c65f71e9c0c3bf35df7a4fb60b9c8a9e2e0ae520c027d05387. 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/USL4R2308866.
I Auditioned for the Blue Devils in 2023 and Got Cut (I Will Now March Open Class)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7598a794a3b57f6282335f3dc46c984a5e033b849888609deb4a3e9f9b96ab2c. 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/USL4R2308867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b97ca66830e10765099b02611699f29b9c90e3b167e4e581ef2f15cc5b05766. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T15:38:15Z), 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/USL4R2308868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c6fab77a97ae2bf56fed8849db5448a9dbb03b73120f5ba55de1b5b7784eae. 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/USL4R2308869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9603a89359f43cf88c2d4d60b45ab436a7d49bb9476268a2740a05ee70700b. 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/USL4R2308870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de83fb0aaf1f16330241c1a4446f8a97291cba8b2298108864178002aa270ac. 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/USHM82499060.
Cry Me a River, So We Can Have A Place to Swim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91a0046f39999ff9b8c38bebee8ce7108699ee509cda482930699c9e583e96d. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USHM82499061.
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 0x19becc8439840c5993ecd1be44067d7218660d8720496ac79d34473ee96fc71b. 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/USHM82499062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694b636ab07717bc08b1b9f263e57cc52bc934c590159202c8fd996bf54ba85f. 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/USDY42436542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4aa6bde88a29a64024b9a783008e1f321b37e7555399fba9f6bd649650722f. 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/USDY42436544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc364eba2420686eee1690811f7aed3a5c518bd64fd3764e5f5ddb2fd031a250d. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:12:14Z), 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/QZWFP2307925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5474870a42d20d4644e13875f8cf6358e1ae15a91352e7789b129a2e1cc64402. 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/QZWFP2307926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802cc75facd96e32c365892eb972340997261f5d60f7576811a7ea3ba2ea7134. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QZWFP2307927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3185492f0f8548c9e18bc396ebf87d226cc1b82d5b45f014259fa70db338d0c. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZWFP2307928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5e052c8acd07f5e166efb15040af5dbaaa1d821c42f2553dd1917cb19419c2. 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/QZNWW2340544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bd4ec0e0387f3084a59393dd9379482ff5986d6e770dc471e7362c0fa916c4. 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/QZNWU2379624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc981f8264c42a4f1db1213b03845e5d0ee387f151847f4d5a6ea86b49c4372f0. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZNWU2379622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd409c37a79bd0a63889e778b334ee0bf9d0db23fd4e10c7e8c4d949a46d04c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZNWU2379625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa886ac05eaaacd7d0d20ede2988d64626de5a18dba798094c5e5b9d1ec4c6c50. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QZNWU2379626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e15ac9c71388b52be7a084a436a448e5b39497e95e890c3e437eebb630c1f83. 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/USHM22385802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebcf9eaff31f824f6c82828a6d531ff88b95882c7425d6d7d30220d53755a62. 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/USHM22385803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0183853aa5af2d9bb13075651d186bfeed18ef23ac57d9c8ee65170798c1705a. 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/USHM22385804.