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 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 0x47e20a04fe15b5cf9c2f2d21a2021cdca93a109a2ee71a6b4a6905635c4da35e. 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/722f62de-8be9-4d5d-8202-28e70230bb60.json and https://artists.proofprofile.net/proofs/artist/722f62de-8be9-4d5d-8202-28e70230bb60.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 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 0x4345dbac6fd9c4a6e04d30ad791a05b42c2a64e76c980df602adab831dc93007. 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/USA2P2139288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9683fcb6335fddb6c1402f2da57f3d5597388d8477a52a219d01f4e41b703c. 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/GBJAJ2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22422c07fadcec43764894063e4be46fa91d25aae0e46d5cbc3bd5e94adc9f1c. 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/GBLV62310893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bb68a2afca7ebf918428b00ab7af1cfe49b107db020d17922b1b2d79875acc. 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/GBLV62310894.
Constantly (feat. Natalie Wood) [Tilman Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c73937783c118c9a801c830e5fc67e00c87a99c58c6beb0f2e56ae26a1f5809. 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/GBKQU2405368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0b661130a7281c4c1fbff6754ee8be6a49a7e1b7e5138c56dcb5f56e477b94. 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/GB6LY1600913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad35a06e1618e5876d03ebdc0b7b9a9f5fe236be71bc21866d71a422ecbb1a4b. 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/DEAR41520147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4444eac601dd737ef908886ce3163567de08c95f57623b2e641b7bb2acdf2842. 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/GBCPZ1003903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba610ab4390395db81ebe8ea058f308a54e9d55042f237793ac8a0fbdb10361. 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/GBKQU2499022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4c09b12fa2ae1cbfa4ad83a45ec919481d1f9d9f6d3e26fb1b9137ebbdac12. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBKQU2499023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc69a2aa4ff97e770ee8e5955abdc504be8f09197825ef3975e7a01473948f1b. 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/GBKQU2480674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66517b040f8793079b0ba0180f379e8eed54d6bbf185a51af5f58b6db7ccd5a1. 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/GBKQU2463643.
House Shh - Angelo Ferreri Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf004581e5235edbda905aec54ce17ba6525e67cf17adef4f87bf73b6afb0716. 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/GBKQU2461676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe075de6f9a115e6ac1d28bd522a855523630580ae5ed65f7b204bb6b030b5ed9. 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/GBKQU2452730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28b8412254f2d209a1930562937b33e9dc091e97a43ac956ed317ccc8b6dfa8. 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/GBKQU2452731.
White Isle Memories - Inner Sprit Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826e7fd113e6b05c6cef96b8be5b335c5f8661f1b4ed4ed92ddcb6ce70463175. 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/GBKQU2375576.
White Isle Memories - Inner Sprit Extended Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247a08337d3e958f31d6e991c3af4a0840f6cc7317cd5d17e44c8128403c8db1. 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/GBKQU2375577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5827e7868234a76440b7f68b63f3c4552960ce3b7bd5fdd9c0e8377a3503dce9. 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/GBKQU2158500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e75b3d09a2b14ae642674b571211f3c753cf0c6b0671eadc24626063053cbc. 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/GBCEN1201175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b957fdd47674a57d1f20309cfcf9e6b051c710a36b526262eb382afbdc1e72. 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/GBKQU2339550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfe4b0fd37450d1b892047917033992ebc31278b715bce54e05365ddcee06ef. 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/UKW3Z2300523.
Missing You (2023 Mixes) - Michael Gray Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ce9435f1f514846e0fbe81510d8beca3eff50d1a7a7227237e0d964f2d01fd. 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/GBKQU2307560.
Missing You (2023 Mixes) - Michael Gray Instrumental Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd997b2ee34fefce292f518faab368b87a8c9833e55e80d7aeef61b4d7c1f64f. 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/GBKQU2307561.
Missing You (2023 Mixes) - Eric Kupper's Director's Cut 'FK Tribute' Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f05598e9c62d1c791799d90edbc71072e6deb80682b30cc8dc53f22433eac4. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/DEAR41427393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77343bdfd1b9509259833cea963e57ad10cf8c059ecc25b2fccd940486e17ca. 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/GBKQU2307563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c4e65a1f6d4f13c3918f9f52a5f38fe8d23ea3671a48a3894776efa640a7c5. 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/GBKQU2276833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ecf468761dd4fc853e4e29409d677ae1173cb7ff0018781a4d14f3e1a26f56. 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/GBKQU2210621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52820014864624fe80b25328f4f41859914e8a17aa185ee9e13d94275f68def. 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/USA2P2151443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8922c3102a1e9c4687c950cab8c3599cee9cd40beeabc35c4948df821000c130. 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/UKJWJ2100252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c2147e0ed6249404099d70c0b419ceb5e5d0a2ebee77445c07f9f4ad7d283e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB6LY1600732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f329c3a2d3456b97e24a4be69632d1cc7977ceeac20daad6b912d6236e17fe. 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/USA2P2126287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd7a64fd78064baf1186649e7fddd8453da09d67ed7f5112d6553e119459c40. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:27:28Z), 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/USA2P2110820.
You Ain't Breakin' My Heart (Emmaculate Remix)