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 0xcecdab7cf8b15a4e6a2d0ee1485d7886f586b34dd10b7f84d1be3976b4786368. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/458d78d3-c19c-42a3-8eaf-052fcbeaf6e6.json and https://artists.proofprofile.net/proofs/artist/458d78d3-c19c-42a3-8eaf-052fcbeaf6e6.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 0x5c69e269a6116b48969444c563f42b9f68c3b34a55c8a19f00344cd4ccf97aa7. 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/TCACN1614120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba03e7b4cbd2a1e7584b595278d727899a41259f41402aa2a410215e12ef05d6. 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/TCACL1667457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193dc97c77966cec59ab65eb5dc1c457c7eeace1bc4ad5bd48b5d967088b988c. 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/TCACC1487713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a07bb6ca51d649f8da904c9f44a09b5e7e4956118528a2eb8e2b954a24b290. 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/CA5KR2116234.
Closer Than Close - Francois & Louis Benton Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ad38c12f608cda119f7130e7ef9af426b53a221715bc62e4926de6088928e2. 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/GBDLM1800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa2659cfc80febc043ce4877fd3ae822b6c5d889da6730ea217baa5e6b5dcdc. 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/GBDLM1800025.
Show Me - Jamie Duggan & Booda Throwback Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967e883cbe29fb9bdcfd23614dad4e568ccc86e05eaf67774e1f12ef243d0a12. 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/GBDLM1700334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca77a17c3b2e1ca1d7638d5278c584cab3b9ee815e8c83219cce6dab428cb25f. 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/CA5KR1526893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9988f93f1352bd8dcfb0e3acaae604dd481e3c5b797c235cbcfb51a310da3e. 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/GBDLM1800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00833813b4559c039edadaa78d18f394c7e25ea841341d8cfc1950910716b9c. 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/GBDLM1700368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911c2376c5cb54d33b2fe77ae575cad3b36253802d28c9262d308ea308986ce1. 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/GBDLM1700290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd875319b4aeee8658b2c4c1e849f5a6c88c33cebaea3ca5a2f51f5ec4de763a7. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/CA5KR1536671.
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 0x5a7b7384f1183949184c8499b257a297d4259e7cd5ba9e297d8ca33160ee48b2. 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/CA5KR1962820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed6078a92258f6b4f9c25da05322da4c149a56a67e4018e1f343960df01dffb. 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/CA5KR1962827.
HaveIT Music Presents... Shutup & Listen, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02da80d14507550a24bc2ac8882675147f2c819439e951a564ceed72a8c61b72. 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/USHM90936823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818fbceb90213eca93a16b078e0c256ff65ed09f1160f93b5b768d8369517611. 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/USHM90936826.
Short on Time (5 Year Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a881dda0b5527008d08a641d2076cb89c7c14179a60df74c8c3ee5c4aa8cfd. 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/FR6V80364716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baac8bd10077faaf00a86a988024dbf5603f0b25dd5100794fee056b4574215. 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/QMDA61320455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0102fb02eacd23c35d94552c066eb38cba996c0cff9647f4d691d2684bf2005b. 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/QMDA61320459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f7ae07360aaec28a1837252423c0823843c7ec76ab895c3831bd7c571a3b3d. 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/QMDA61320461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dd0ccfbfe9500b3b8e6b23ab921cad2dee91c8c1518dc63bc634733eafb0ac. 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/QMDA61320464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff3af08d5259cbc23dc776c747da967d31c32a75a12a1378f69e2dfe06f28c9. 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/QMDA61320465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6c0cc184a4470360d0565bb1c63a2eb079b10639033c86028a30ac59e29580. 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/FR2MX1000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac17f996306085ecd45a075983697c4ab1d48afa46f8ea5cb1b3a871e6bb25d2. 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/NLBW52000023.