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 0xe923e82461817ff04e54bcb666857f9197ed87d9e95176c2813fa89ad64c58a3. 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/2358fe02-1c41-4bc0-8ba8-f412d09e97e0.json and https://artists.proofprofile.net/proofs/artist/2358fe02-1c41-4bc0-8ba8-f412d09e97e0.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 0xbd87178d6e777096ac1b29b54bcd29f4b1abb4ceb9d9097f8370edf66dd1b039. 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/TWD952416108.
Living Nightmares - Mini Series <Urban Horror> Theme Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235cb686afdd4f5f67a8702ad22d117a8fbb4eb9d9756d0dec3443718ecadcdc. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/TWD952428101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4fbbc8c83f61131a5139879fd50c11beea206d088423e11cb7fefe2dcd6ba2. 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/TWD952416104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1510d94420179b548e840b2b62e90487dccdef43c802fd28e678d32e0f8db302. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TWD952416106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43a36f1e9fe2b5546ad9f5b4a26b9268e6a64f4e06fd533836e0550e2f1475a. 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/TWD952416102.
False Reality - From Netflix Series "Let's Talk About CHU"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43a36f1e9fe2b5546ad9f5b4a26b9268e6a64f4e06fd533836e0550e2f1475a. 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/TWD952416102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1f7dc6e4db61300459231afbad40fcf5312a431603a8c734bf2995c718f5e7. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/TWD952416103.
Redbreast - Netflix Series "Let's Talk About CHU" Theme Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688cb30695155b0b5e42303e4bf9ae38e7b9c7dc9263c32b33431cbc338efd60. 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/TWD952416101.
How Does It Feel - From Netflix Series "Let's Talk About CHU"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4fbbc8c83f61131a5139879fd50c11beea206d088423e11cb7fefe2dcd6ba2. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/TWD952416104.
Shall We Stay Together - From Netflix Series "Let's Talk About CHU"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526003173421392f6703b5a85cc915453cac43ce24a1472ef5355a7ce1fd5c2a. 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/TWD952416105.
This is Love - Netflix Series "Let's Talk About CHU" Theme Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342acc4fba48c48422ee64f46c45f7406993f2e4a56708a4a0758666fdc82843. 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/TWD952305101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342acc4fba48c48422ee64f46c45f7406993f2e4a56708a4a0758666fdc82843. 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/TWD952305101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be1378e335d2f42b0dbae448c95b2fe842a59c2375c079edc4c88ffa2fc6a04. 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/TWCC32320140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19303f8b46ed0779694e2a4f82d2686fe08d674918caef4704b48fb46cd9a044. 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/TWCC32320176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb131fdd765b4faf6573f68e2f86f82bd5a0ec6878f57fe89d5226ee1ffca5396. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/TWCC32320161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0737e3c007aedbe1563bbae49f51c1c5475a1672a42754e3a6e983a69342a6a. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/TWCC32420513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9376b3ab7d42f464b90d6e5bdbd2514de60f71cf0a59ba3b09169ab55c4dda. 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/TWCC32418328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6160bf133bdf8b77ba9eaebbcb9ff025b4aec70e60df7dc746fb7c981dd6bc0b. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/TWCC32420515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b0d1c28f5e78641f8b3a2dbe8549d94782f40fa880454774edcc65f2c255f2. 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/TWD952416109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b01baba2564a8a0c640417dca5c39944a97ce0f16863ba9ab5cf08ab9a90727. 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/TWD952416110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a90105eaaed491db6497e451abdf98995327716b5b422e744b73c779f7e155. 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/TWD952416111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060469390300e8c3d90f75972f1a17493c8e5f511e540e0f1fead5befe804095. 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/TWD952416112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725a42def5f6b13d4963f7e7ff96be3ad8f9f997a8dc54d3a2a212307cf06cda. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TWD952416113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84eefece423ef0074f7ec7f2d4c40a8242ddb786435db415f4d8bb4c02ba06e8. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TWD952416114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd87178d6e777096ac1b29b54bcd29f4b1abb4ceb9d9097f8370edf66dd1b039. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TWD952416108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4b6f7f3357a256fe252b21a914f738d5742ac4ada651244638d65404eeac86. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/TWD952416115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92b11c6a65edb6d361cd1dd29b20efe5e11aba7d1ada9b1cf1152085cd88272. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/TWD952416116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0d4c4ec6eed6ae08351e1d528d835ffeba68c8c117b29f5cce4a9fe15d32f7. 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/TWD952416117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbbd382dafe848f8812eae020ee7f084c8562cdfed387c18a9bd1ef282a96ff. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TWD952416118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713c6008829761cea060f245bb57a6ee79cfb27fec5b5d4b541966b9d97797e7. 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/TWD952416119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b0d1c28f5e78641f8b3a2dbe8549d94782f40fa880454774edcc65f2c255f2. 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/TWD952416109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804cd7b36a1bc25b59a19634803f7df69e9a22bf9d74cca4da808895618998ac. 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/TWA532500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9376b3ab7d42f464b90d6e5bdbd2514de60f71cf0a59ba3b09169ab55c4dda. 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/TWCC32418328.