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 0x5fa369f9aa37917f11979e7befe2a829269b53d0fe4ca10a1bf56ad2a106ab9a. 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/3a139f98-3d10-4c53-af37-777e4cdfc3f4.json and https://artists.proofprofile.net/proofs/artist/3a139f98-3d10-4c53-af37-777e4cdfc3f4.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 0x124cd26d082a6fbdf1fef4f70368b3d18cc30903d4b74728b9b1b82e8765ff3b. 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/SE2WJ2213001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d97547276d4e8f31cb618a662e659dd1f58711bc6239c615935200bfd42b7f5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE2WJ2213003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abb9b90b72cefd5043d826858b84ee4dd998b7d63de701cae1ccb5b3b342b3b. 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/UKACT2330989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc604977a7ddcf635bf0cc8a466c18dbafef2db86ba69cc66c9dd7bc143330f8e. 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/UKACT2330990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a825281178e54b58b80f0240f93a5c0baca9686c52e4c909e46ef1d47d0f59. 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/UKACT2330991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b812bd1d923db3eb7456342f4b1acdea9db4c28a8dcc575bbadab542b21872. 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/UKACT2330992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf45d5e8685a80e7edb56e25bc11ad6c663e4ec1254ea464bf14b1ad1acf7094. 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/TCAHE2340902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf738ab81e2f78ecfc3bba8d9b27c7d92eaa0869b880d8e13638e5b4801456f7. 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/TCAHE2340919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc783edaf286034a69f54c851ec8b27bb1397ea1f442a183f7dc21a7108231fd9. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCAHE2340883.
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 0x1afec6da8984c0582c0c8a8a3c6bc832dd3f0328b4273e7a04154ecc3e4be11b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCAHE2340892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9714a1b59eadcefbcd633c7bd5b52999df4c62ec50585d227e032302370ef96f. 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/UKACT2330993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8804f3ee485b6309b2cd7d6a4e19d476548e8d4b48b8cac7bcb15db1bf3576b. 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/UKACT2330994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e1148312c05231f403eff0de6515e579308eca81cb554493105319fd745a9d. 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/UKACT2330995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370e7339fabc1178976ac42fd25a1f82b7acfe7dccccee4be8e56da31a187b0b. 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/AUJ032300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2c3ddac3dd45ad21b9826a2b5cd658fea8ae5065e2085ec49b6a2bbf3e909a. 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/AUJ032300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f6927b244135c7542b0188db39cdcaf2670ba97f4ab0390fa6c0681d516b57. 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/UKWNJ2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68605d64d1bc49efc97a870f864c20f1691f7c691e49c7d109411a611b8c4d53. 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/UKWNJ2200040.
Eternity - Alex Kassian's Ode to Sunshine Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f842b3fc594680c83db1c41bdf282ce29d36c264a5090956b6dc234733d06c. 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/UKWNJ2200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3db6ca96f1b4bb80ff5f8590f900858e153899c9daac295777c879e9dff6f08. 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/UKWNJ2200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e42e12e682e6275020b14560bb96417768f15e07b449895ded1bea63a46770f. 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/GBJX32026002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148ee26804bf52fca90e3b30b64a9f68663caba8cec958f15a9de0926348ce8f. 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/GBJX32026001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e56d6caa62ac65f7f4163c44189d6e540cf9a2dbd14e5d35d2e26afb579b4b5. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/GBJX32026003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d6efe943425c2fde141560616bf2eca370d319eaf28738a53b24990e4aa0f3. 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/GB2DZ1900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794effd8d675f6b27e4572ece45a334ed8367208c67ba781e6c39262ec10daf9. 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/GB2DZ1900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25450ce2ccab4e4ee5f4b44c6c666fdbcef7bcf16c413cec7634d69bd5bc2671. 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/GB2DZ1900094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d0b24be7468a1822bf5b87b9b9df9cfb5c956063f79529e3d1865cefc62173. 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/GB2DZ1900095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6ab4e7da01308367f361f2178c62856589b15705b25fcc38029e4ff02e4aea. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GB2DZ1900096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f9ad635af0baece6692e3ddf82267b5dcaf9099d807aee883c2edce54d62c5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:10:30Z), 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/GB2DZ1900093.