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 0x99b1e2bf928f9039f5c4251b0cc11daf67f36777070b67e98c861fbfa0882553. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10263003-fef5-4cbd-b196-1ff2f4874885.json and https://artists.proofprofile.net/proofs/artist/10263003-fef5-4cbd-b196-1ff2f4874885.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 0x6a1422e9da885b391d8459ef635df568c3ae1cbafa4aa96bd75e8b7a28cd44a3. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/ESA011814436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d1363d57f1010aabb2fd32477beae6eec1909737deafab3fd769206f8ef233. 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/QM4TX2047134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58afecc35e6cbdb626228e746aafcdbc373abcfc68cd8b0ad148842e23fdc237. 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/GBKQU1773139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d15bfb445827fef02ca35e69b12f4951fdb215c2efd5951b2a42fce22f4062b. 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/GBKQU1773140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699971ef75b4b377a977097fbcad57d897ba5e813db5883e6cedeee4b2a0d625. 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/GBKQU1773143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb890e5f6e8b852252066babdb88ff5399c1588eaef97cd099875bdaf695ae24b. 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/GBKQU1773144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd7ed137e58cee82e885eed169af3b56c5e10d156c208267bae6349fbe1601b. 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/GBKQU1773147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06212a4fb38a1f52405886c5aa649db86758ca18a980817f07c46e9119fb9f70. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBKQU1773141.
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 0xe1ba885a9409473b636b026cadbfb193743aa9da51d45573930b5d5572358fcf. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBKQU1773142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062c979ea6be4ce77bbe404b89e435e9f361ca8d6f868ae0d543dd57bf977604. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBKQU1773145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9278be84fad8c6ff3fc2673893217b0a5d39c7ac7066e4f5c3c2375d42d74e52. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBKQU1773148.
Reggae Vibes Gone International - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa015b81bb335e61f0edaad9952041590ee1aed858494507d0ee75c8bde9e5d6. 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/GBKQU1443186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bc88d2fa35ef19712ec204e2b6fbd093bd9f612909f9ac15961056bc1f4232. 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/GBKQU1456128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3d35f75c04c83b34cf6cad67c008fe494e0920c7e03284a656d9e978b31ee3. 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/GBKQU1481277.
Jah Jah Is The Number One - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda44bb89d999e9b5ec8f9cf192a1d37646af353d870464554814d70b900a289. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBKQU1443747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f7399ff5558e2fe7c7067a97f1a55f23d5fac128f4c9b820694529958f605d. 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/GBKQU1461087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b49af4906d2bca3478941f2e8b4c074163f5ae62391b673030f8cbdc7ccda4b. 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/GBKQU1461089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2a27f61ce9108f880aaa54d7f63a29516f05257d897787112770a0d29bf4ec. 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/GBKQU1461093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98561b8b12c21750c856d289dd3dffd53e7e8286754b43f3c34edc69f761761b. 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/GBKQU1455190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b15bd78be7e4321fff0c78a52076da1730c955547e1d2c8d63e6fd38c4317b3. 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/ES64E2415104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa30bb7ce68c837f77aeeeabf79708858c082dc43d208973943745fc6975d51. 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/ESA012224254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a39c673f8ec5ecde647a4b349c044a728df79344aaa7a15e16a035b3cd2ebb7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ESA011589155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec4f1a5d20c176f93f2df004557e376bef3446b3b1a9ca64a087a0cf0d2b714. 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/ESA012166619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a5b114dcfc81b1e6e06f317bcc159f13025f7b71dbfe422ce53358e767354f. 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/ESA011959945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420a198d058947e3414c38aebe315041db18eacd9d0956a858bccf2c551b58a9. 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/ESA011912020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87540feee4b15463e9f77e001718dfc20a5d5b2e9201937ca4fa67bddfd54795. 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/ESA011806763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06317ccf103819d63e446895088cd1bd724a4bedde35cb2cf65bb05a2d46d804. 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/ES20S1700077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9d277d21555ac0b6b38c3fe3608d7c7bea24468c6c57a9483228b7b53b4cf0. 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/ES20S1700078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f75c54009e7c1dc2b90bac5e01e4fc179ca51ae2ca334630b0fbebfc67fa3ac. 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/GBKQU1589270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2707440b7303095fa09e10d0baa5aa5702fad0f35c37c1e2a83a3cb5c9e987. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GBKQU1589268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7c1fcac11ae8c1155c429ecb53d6db30c39dbd39b480bed564b3685f20968c. 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/GBKQU1568304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94770f0b326dba6d98c74a6db2aa8faa7a739d7cb693a9955253cd42ac1e8a39. 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/QZVEM2532340.