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 0x5efe954ab41e2a673f2d2121e810af817b5df29a26918b651719ff946f776217. 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/7cbdf3cd-0c5c-4742-9cac-c065c2353a85.json and https://artists.proofprofile.net/proofs/artist/7cbdf3cd-0c5c-4742-9cac-c065c2353a85.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 0x9330853651c1d25e576f5abda402f12eabd96271bbb318ff0419c7838ef13c02. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEC712005809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19268b19b8b5f3011068e3abb94898b483c0d4ea8050ba40f96bd27a4b2006ae. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEC712005810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e926e848bb3e1e6116478409e78df800e3295cd352bf941a0189b99c3fc6d86. 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/DEC712005811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24fd2ffa9cfa2312f2de54310da12060a04556e08b97fc0e6cd1d35dbc59b30. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEC712005812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96dbbd419ad362998ebb7ea36d1cac0bba62d4c4320269899aab34a875c4af9. 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/DEC712005813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cd30ec56da932debf25657df8e000c7b42248d21acee2b13129da9a5149381. 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/DEC712005814.
Olé Olé - Fußball ist okay - Nikolas solo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0dfac604d31b0bed16f329b7df19e8c3a0e83af3483d3433a0ba752e1738300. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEC712005815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079d5ba3bd0feacfd7848f6d3a71d048a1a2214df3a78fda15f7ba49d87efc4d. 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/DEC712005816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0140ebd59d5c6d5c5cb9193eb4d4ec5dea858df41aa6f4c58990ec32e186665. 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/DEC712005817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c58f2464b1a300610e99f6b8845e8345e2ddc9159a5680ab0be51f7c1336ede. 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/DEC712005818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394a81e57350341ce3870c917a554558fd0af6e7342e38540211d8d60ff9e167. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DEC712005819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949d9fc8c299f25477b414fb468fee393f4ad683d9a0e167251c50ca993707b6. 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/DEC712005820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f1d6976ee5c2a5a519e7f5ae2f4505a828f28108f71642fd4ea57c84e5e279. 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/DEC712005821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013bf23c49c34e747133869675b3beddb128b39b7f8a27cda926d4e0944faa14. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DEC712005822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3116ace07795d0008adfcc9ba0f22b77fd831e01681dd2aada6a627352be4c. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/DEC712005823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a4f72b6f9da6d2c4efb949b0a90798eb672e9d9ed08c48f3f2f3c53e24475a. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEC712005824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d8e3c1ae359771cd0023d8f6ff311bd632efcd9aeea53a934d1337cd05f9ae. 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/DEC712005825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02dff7b9bdf5a28a2963aa19b38be94908a78a7fe8af5981369c96991722de0d. 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/DEC712005826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34081cf780ea66a6b64f3d7ffa5cd01476253a04d70f1633bdca70730c71a04. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEC712005827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9e40e7b9c932085e484955e075dc042207907554b143055b3e11bff2d0fdd8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEC712005828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefd2f11751730289067f537e912441c4f997c3dd6a7edeededd80b722c30cec. 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/DEC712005830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf566d1c1ba11ac5c8e2c14c1685e5e70d118ea689c29a5ea9d86f1657f26fc70. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/DEC712005831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c15ceb08eaa949db2eed88eec03d3e7474f0130876a6851f3202c1c3325fe1f. 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/DEC712005832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511ca1707d66189e7ac7193f18e57f3ea2da4a5721781ad3244526c4e874c02d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEC712005833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f20636396ea1c5836bbfd455248eb9771bddb1a507f14e77a31e23f1b3c781d. 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/DEC712005834.
Social Distancing (feat. Lions Head) (feat. Iggy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49b734456487ace599b3894554357d9ec3759526993865b947cf5fed363a5dd. 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/DEC712005973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c204bce65a99b3cfba42ed09ee59bdad884f97a197d3764bc400c395deb7d4. 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/DEC712005835.