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 0xffb4d7ed70adc23beedb6a6568afe8d7214b39e20a0b724b54e631a7d4d615aa. 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/d8c02323-27e0-4284-a62d-0519cbaf903f.json and https://artists.proofprofile.net/proofs/artist/d8c02323-27e0-4284-a62d-0519cbaf903f.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 0x970c8cd9e462a683dff6dc16ffb314dad967d3305a52d8766a2bd523cf07315b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UKDBM1600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c18823aaa6ff91bc930dc3eadbc6abba593c99a443dcbafa35f113350554d50. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKDBM1600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1e8942be8221c689370b29f93cb73bed4228be1615a988c790352458ecda53. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UKDBM1600034.
Sunshine (Reginald Omas Mamode IV Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb1f69a35646ab915752ecbdb6f52cc1d45fa92165f529e6a03fbf3c0f8ce5b. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/UKDBM1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac93b830d1790ab3b07c3ef5b8cde51cea2a3de08c7014d1461255cd57ff345. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/UKDBM1900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5bfb8057d3207231c08c449b91dd4cc86abe77b7e941b37dc37263478b7b0b. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/UKDBM1900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9529fbd4630cc4d9f779108494fa77df65fd1b6df3a01bdf361a2e63d54f8aee. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:20:45Z), 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/UKDBM1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f33b87a48f6aa10e15d5e52f3fb955e41d8b5f7cc8ff89c0ee697d9320b660. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKDBM1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb47663ee9e82567b161b4e2286df0164aa1ac5e64912e164e73614fbbd01e51. 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/UKDBM1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3f4531194f16b78aff5e4afd08dfd9d5c869c432056a50917ebdc862665014. 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/UKDBM1900046.
Wall Street (Matthew Herbert's Street Dub)
Joyfulness (Alexa Harley Acapella Re-Work)
Still Here (Alexandra Hamilton-Ayres Rework)
Still Here - Alexandra Hamilton-Ayres Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a80b92101e59e8dcfc7b755577686e6d764b34c031e799e0279de53b940ea3d. 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/UKDBM2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62912db9b88244727c997167701e3eaa932b879955747983f7972873169d0479. 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/UKDBM2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a80b92101e59e8dcfc7b755577686e6d764b34c031e799e0279de53b940ea3d. 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/UKDBM2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbf5ceed0c8d81c13df455f961955a9fe095a87e55477fb2275225ce9f10efa. 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/UKDBM2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63edcc96c35c7b40f03b0a51d5f2c5de7222d0ca5110fae2960f4b10c067c9a. 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/UKDBM2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4cfe6c489181afb34334310670d60f1101bb9d1d04769df8e3f9df284ada7a. 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/UKDBM2400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df72eb0679ac52894cfd9e85dd6683166e8057a5e0f8921474650e311c89c27. 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/UKDBM2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9550bf6b28473fc39a496baf8b5bd5571ea630e734318e4b17d068caf921f401. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKDBM2400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5efac450e7ecedebd4459217081a585d496cb1d3512a6740550cc2d649cb647. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR2X42585300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f9e0d4b4360a0fc402942865107f08673b467aab621890521378cbe04734da. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR2X42585299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c696a71d346715eba4ccca1c04818ca7f858774f27376190c7f9042e1d2a3fb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR2X42585301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70180a7001e7d7e53e06434ae18b04d69884185fe95b95cf7fded32d33e7d31c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/FR2X42585302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9550bf6b28473fc39a496baf8b5bd5571ea630e734318e4b17d068caf921f401. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UKDBM2400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec26a98a4699daccc1ec345c0ac3f19253d65ec4904be221e7dd41619e268064. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBGLW2100200.