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 0x203d2bd2e2c32ec9e2ba9df53df3eaa3469461469601a17eb10cd90ba6977c4b. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcb90d97-32f5-43a7-a7ad-0039daf3e7ab.json and https://artists.proofprofile.net/proofs/artist/fcb90d97-32f5-43a7-a7ad-0039daf3e7ab.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 0x22cb5346c195a334efe23de58df0e83cc384b228a6dc7aa8af2a1e2bfd88c9cb. 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/QZMHK2366332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29070159475d335dee3cc77eda0e58758d67e5ade7d8b3cd00d3e5bf853c5a5. 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/NLCK41061942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d89130d19da96a27cfe88d3e723ed4cb0c01cbc57e72728d3223290bb1da4c. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:24:07Z), 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/NLCK41061943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229cb04bb8b8c6620361ff72514c47db1c187a9b00e679a6eeaeb890fc345026. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/NLCK41061945.
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 0xa0af384714a55df4367ee2763ad5179ba66cfcd5206cc87fea016b55dd69c938. 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/NLCK41065258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3653b5c09cac6f4aae5d6a8b921c600e6ccd394d673402d381d2ce641d77dda. 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/NLCK41065262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda22e3119aa5ad0c63c6d378cd8ee704e356827f820530fa2517862ba2d54e2d. 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/NLCK42421787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f15dd8dd41eaaf4bcfb95f5fa72c92f1202e572542a99c7e55313d1cb5dd7a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:35:55Z), 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/FR9W12444276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de83fc7a61c7b8433e611a2b0fe205c39dfd98e68849c9bd0e6de45be4b3c73. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR9W12444274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a4ce0d316351469ca7be6c46b19e091ce148acc44052687a89e0614a229f26. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:29:59Z), 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/QZFP52417070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2a698c284a84545a6edfa40559fdf5cc82e640d356d79f824b4b6ff76011bb. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QM8DG2430127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b792eb88cc70edc03a06fe96fb09bbed9bc3502bfd06af229b7155e0928a1dd. 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/FR9W12108959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19790837247db6d269f3557c2fb3a24d9ed0b90d0a130117f9dc2942c9e771c1. 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/FR9W12108961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55096e207e70b835b4cc76159d21110710e14ca632cd09b16930c6dbc2eca96. 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/FR9W12108960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375d4d29e6bdd71add38c305544d124306b5c80713944136f84e4d2c044a1986. 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/USA2P2476106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60db56d6a187549655f3a148b25e00231ea058ac17b496fa57797a6177ea4c73. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:52:08Z), 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/USA2P2476107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7069437ed42c6b85a53d9ece18de41b4a425d2925f218c04bdb40170a8af27e7. 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/USA2P2476109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0160899bd08a5393fd8c491c18548969c8e335e1a359ef3e407269647bb1ce7d. 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/USA2P2476111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2532fce19ef845d30ff15600ee694dc00b318dc24528a4bac568d6d40873baf. 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/USA2P2476112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e22c57f836f76dc6214ab9d467c9870c2df9d4ea4f1cae2ea3aa53731316c43. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:03:40Z), 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/USA2P2476113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dae416320fb12f872eb8a8074d6462a89f8e18b046f91407667c1d8ef9c8e7. 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/USA2P2476115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed98f7a84157130806fdb1d1a99bc0cac712dff3d368053f5c4a20427834c3a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USA2P2476110.
Household Freedom - ILLNURSE End Of The Curse Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720e5e05e3742ebec53e4c88e6c03e211fefa7e0e7974be9f8ee5e711639c255. 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/UKDRT2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f558ef449cc57da5c90d82023b394f7e5106d33039363e9b83d3590e2501cfc. 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/QZHN72261027.
All Buttons In (Inc. Makornik and ZNZL Remix)