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 0xb39038521f31e032cfc47aa164ec5d9ff1161165704dd562ab421c548f62ecdd. 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/7ff3790f-7fa5-4884-8de8-5a693f382dd9.json and https://artists.proofprofile.net/proofs/artist/7ff3790f-7fa5-4884-8de8-5a693f382dd9.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 0x2a568f7cbe40c3fa1f5a3c36bf3579e4b0938da366e5247dcad3b87f282bb298. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCABA1159242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8b6a13a611d340af629c1eeff5a00e0615f9bdfddc2032e023c3cad6f1c28b. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/QMSV51400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d31c6adbdfdf172a1fb205cddfdda08ef879a0ca6a501f7b0e36208ea15d6e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QMSV51500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f922004710109df99c4acb7c139829b5e222c10627033a1c1b2f5ab736f5379. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:33:41Z), 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/QMSV51500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03a46f42d28dc0953ca2839628ca223e375e88716b733dc616b0c5ac66f7695. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMSV51500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b80e9c3b32ad9707abfc171facd81e0c91f0555461399981e6c6872197d71e2. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:08:50Z), 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/QMSV51500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a471846c407c273c15b2b803890fcd45da277d9f19cbe43f8e52a6b207a4dc. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QMSV51600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7996ed8fef055dc9a85d5bd9c81f2b14578caa8191f775bcccf3df3ad27890d5. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:29:52Z), 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/QMSV51800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e092f95ad45e732b4ab203d0d97dff10acf016e6f7373ec03b9df2269bcb5c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMSV51900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1841bd7bf7f5ee4e1a11ce0853848874a1e44c10c4e6627fa8f93ed32c701e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QMSV52000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63d61d29495c257945fa13fdf9053ece11ee8c4e2c597c326107546ec065d1c. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/QMSV52200007.
Church Girls Love R&B: Girls Trip (Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb9c791a8cad9b7b568fb4fb1a5fd3a5083b7abfdfcaf53584fd35b6fb356bf. 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/QZS7J2380895.
All The Time (feat. Lil Wayne & Natasha Mosley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a9be8e401ff7d26f3abb979c800aa65980e1c7d5b0b0d90651d6c34ef849f5. 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/USUM71303090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1a86f10be2db0dad4115aec8f6f27dc41c71e0e8d7f2eac2f89f28f437815f. 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/TCADI1796376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2b31d37d45196b7e0f6aa277fbf68d8a035f926611570d597c02f9880f1187. 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/USUYG1083651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a9be8e401ff7d26f3abb979c800aa65980e1c7d5b0b0d90651d6c34ef849f5. 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/USUM71303090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a9be8e401ff7d26f3abb979c800aa65980e1c7d5b0b0d90651d6c34ef849f5. 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/USUM71303090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a9be8e401ff7d26f3abb979c800aa65980e1c7d5b0b0d90651d6c34ef849f5. 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/USUM71303090.
American Honey (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a9be8e401ff7d26f3abb979c800aa65980e1c7d5b0b0d90651d6c34ef849f5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USUM71303090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d87b2898126945e1784bb2f2870f4ec909d092924f8222fb2588e84a9379322. 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/USLD91725289.
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 0xd22bbdf170dc8d097ee30e24f7794ac9c7ac7831dd24bbd001d2586b6ce68998. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TCAGX2362173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245e6739d8d19f371c0de0dad312f876d213ed1de530e4cd56c18eb5bce0d2f9. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/USUYG1029823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fa8a7eaef83289dd6c3aa5118f12895527006e08d346d847af3a46ec56617b. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USKO11302168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4dde22710afb8bb2fe75e655d2361a439a86e59ae59a7891b77cf3f77580a5. 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/USKO11302170.