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 0x74e2da2053baec4866dab7416727fc50fe9d4f4689bf4984ac6a03cb2ff3f7cc. 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/2bdc29b4-54df-434b-998c-8e2dbd2363e7.json and https://artists.proofprofile.net/proofs/artist/2bdc29b4-54df-434b-998c-8e2dbd2363e7.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 0x76c988203abf98c97b06dc0695de8fdbb85c266141594859ba090017e2350151. 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/DEE861901930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986338368e4e87f7404b521204a75c1257bac4443aeca5af9d32e6715d509dea. 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/DEE862202544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16ac1bd90e17e0f1b1995a2f68b00ab08cf4fd3334ec02643bb632d481a5f98. 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/DEXO12248526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09915bc6d6cb1eb52c023d9015af57a497529f425909e0ccbd9c24bdbf2213e4. 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/NLZ542200831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640933c56e8e2b0401674b9883e720518d9ea3b0d366b3ae99e6d3513ceb27ae. 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/DEE862200215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71692a7c92cf0f63ef228ca00687437c49d7426c8b909a66045c2214fa795a6. 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/DEE862002384.
Not So Bad (feat. Emie) - Zonderling Remix
Not So Bad (feat. Emie) [Zonderling Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333627e729adb689efc999871a78700eda12a4267b64cf261980a873c4aeded2. 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/NLZ542000303.
Not So Bad (feat. Emie) - Zonderling Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30defdcad6a7384b01f3343f242ce1710f4c6b8812a2240537e5a47e2e038c6e. 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/NLZ542000302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f230a3b8ab3dcc608b3c374da813f4bed07841a2355caa57907bbb629914df. 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/DEE862300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30bf004f3cf09d9e37157ba8ff204b38b72e56f835e756d5714c15529e3961e. 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/FR2X42410080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71692a7c92cf0f63ef228ca00687437c49d7426c8b909a66045c2214fa795a6. 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/DEE862002384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71692a7c92cf0f63ef228ca00687437c49d7426c8b909a66045c2214fa795a6. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/DEE862002384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71692a7c92cf0f63ef228ca00687437c49d7426c8b909a66045c2214fa795a6. 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/DEE862002384.
Dance Hits Spring 2020 (Presented by Spinnin' Records)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6e38f32c5bf94558469476e4de251cd06b0011b5c5154d6cbb788192dfa226. 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/NLZ541902005.
Blind Side (feat. Patrik Jean) - Extended Mix
Blind Side (feat. Patrik Jean) [Extended Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae8d565c32265635f868e934532008f6da0f875e0128a2a4a78cfc634a52668. 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/NLZ542200832.