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 0xc32830dad32d146d19986486259bc40000c931b03718d87f98c619a731098ac7. 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/a31f9020-932a-4fb2-9b4e-c1be57320853.json and https://artists.proofprofile.net/proofs/artist/a31f9020-932a-4fb2-9b4e-c1be57320853.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 0xb0cefe93eca973c00d59c0f63dd7917e435a0ec81ebe4baed7f134ec9805ef7b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLF711607919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb616e1908f3d5a5f1a5c3b1609947018e75a3d3d7fc927e80ec318d4e26b4eb. 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/NLF711702389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5815cf6794984eaadfb2317c89e5339d75ddbbd507d7c97c7be684b5da956b9. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX281720921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe44f83c7ffb6c2450f689fa3ca9d924fbd44b96825f2682e65c34a0393ca2a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/NLF711801514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc264839c12ff3a37f12ce082ccf6cc49560c2f74c7314a4439512bf3923e440. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/NLF711801504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb353f60ba385fca8e8c732e1dfaaf4d775a42a0a3fe448e769ff54d2f9a5ab. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/NLF711801505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf1a375ee627cfdaf4049c1ae974882c79be88676db983f0f5ee7bb8a325b0b. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:41:56Z), 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/NLF711811525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f4b8b21e72e6595e8fb276177067e986084c7789463483568c6e39fb269d4b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLF711904036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a8448c2d835f4c1ad3e883931445edbf443096a07f2e2759ebb08b404c8155. 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/NLF711907031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc9037722fe67f57cd47a4500c46379fac4b76b952e1f1d004384362ec67551. 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/NLF711905177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f4b8b21e72e6595e8fb276177067e986084c7789463483568c6e39fb269d4b. 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/NLF711904036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb969f8d05a07f164c2e10009c18bd8a5257d86a01d0d8433e2d76296fd3f69b4. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:26:30Z), 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/USA2P2034437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce56c573e95edb45d5680791fb490324c7247c7afc28b2227eaee9924dea8f96. 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/NLF712011442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294731cc6ebdb04a4382a7c8404956c80b5f3f8d0aa18df5911f5f71827103ae. 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/GBKQU2172470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21e4ce5fc6ccac8e9771e260a4b0150b37a8e66839fa998b6a76407e11136f2. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:53:00Z), 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/GBKQU2174052.
Late Night Obsession (Danny Da Costa Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bb08592f94157403eb29d703dc60714f04509ecbbcbd444487b4067ad31bfb. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/NLF712204403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833d6885871025ee22528931101dba0dc390decc5837df4a4ba88ca6d426a29f. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:02:02Z), 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/NLF712205228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d25eac9c3880b735b2221bbffd01ca8d1e4998315f049f7d2e81bdd27692ea6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NLF712300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74871be77b5459900654c65844527c88f9e3f3bb709365f5cc859e5e05d41a07. 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/NLF712305348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa04a3d7ecbebae165c4d52140d226be5c2207a57ec64682551eb26466283bf. 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/NLF712306780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6965f577246231a8c0ecefc89b27b9c1be0f1738f194a4e0e088d19460b7c98. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:31:21Z), 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/NLF712304907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8b10d00cbd257675ee1b46ace7e8ca14ac76b3886aa5eff1b78bf37414ca37. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLF712304908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb3145f1500f2287d69858c9218373940da2d1dd85577cc028e0d3b98e71eba. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:16:31Z), 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/NLF712307548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2848247047f8c2e842a16a4e67b757b9c9e9dbc7dcb3f388a2f7a66537909367. 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/NLF712306038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92303b154a5c929fc6d53a45c3aece14c2750b474eebe66b2f4b5a14cfe72030. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NLF712306037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74871be77b5459900654c65844527c88f9e3f3bb709365f5cc859e5e05d41a07. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLF712305348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa04a3d7ecbebae165c4d52140d226be5c2207a57ec64682551eb26466283bf. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/NLF712306780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74871be77b5459900654c65844527c88f9e3f3bb709365f5cc859e5e05d41a07. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLF712305348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaac11ca01dd8799e4f94a7d68b95ec3c644ea38f06577de201a6edda663bf11. 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/NLF712402163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67af2a8054fc472cce91a11b63f5c44d4652d5d7939ba47d31821ff61a782ca. 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/NLF712408291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa586a395862fcda9626355d8863ba13a200509b58e8b6e89b964c1c56e5ca922. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLF712502733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cbc531dc90b9bebc144ba4e7156514e936380aa6ce5fd83198725261f531e5. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/NLF712503254.
Souldia - Sebastian Davidson & Cir:cle Remix
Souldia (Sebastian Davidson & Cir:cle Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0228d3b366181c424c5f18f05acf367a89df08a676472dbde9bb76642a32bae. 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/QZWDD2223230.