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 0x6f9762ae8aefc9a77567c51f01fd9a1ee7a887b0af15b27ebfa99da6701b59f2. 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/10dbd2d5-ed4d-4ae2-b4a9-c6f8575fb069.json and https://artists.proofprofile.net/proofs/artist/10dbd2d5-ed4d-4ae2-b4a9-c6f8575fb069.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nightcore - Someone You Loved Cover (Female Version)
Nightcore - Let Me Down Slowly Cover (Female Version)
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 0xde5bc8023b9e862332970fd5837e70dc6044ce91d7d13f728e140dbaed94fc6b. 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/QZ22B3003585.
Nightcore - Before You Go (Female Version) (Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c7476ad041d56764068e1fffdfa511074849b7840af61d00ca86f2db9428b4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZ22B2070965.
Nightcore - You Broke Me First (Cover Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36242b870fe37f1627d85d5e04e9f3b562d50e8ef0d0a34223a67de27bcb7b38. 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/QZN882203940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabc041494229b1c2f9b437713f3e39a67a66dbc6f7b2cd3c5f2ff2ce462916e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/UKZGC2411267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc27d741402643575e77b2748e2bd34725adf30e6a48c24aa512c7363921c94. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UKZGC2500945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8fabe2663a319274efad30f8adf2de463eccc8afc0e32fc3199cebbd51c218. 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/QZN882128840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191a38dab847ab7ac76ab749a0286e7fd18feb863f44933337641bd0262670ef. 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/QZN882224798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8fabe2663a319274efad30f8adf2de463eccc8afc0e32fc3199cebbd51c218. 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/QZN882128840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191a38dab847ab7ac76ab749a0286e7fd18feb863f44933337641bd0262670ef. 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/QZN882224798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f1dba54d216487f45a94b36f96a7944b829b928fc2f9518f5e12d024eb0f57. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/UKZGC2203331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8fabe2663a319274efad30f8adf2de463eccc8afc0e32fc3199cebbd51c218. 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/QZN882128840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeced48751521a4ee4cea6d8acc0aa5b1b4c17d654db3fa28f7da4a2d0ac115b4. 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/QZN882134066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191a38dab847ab7ac76ab749a0286e7fd18feb863f44933337641bd0262670ef. 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/QZN882224798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb18ce151a510c155daaac0d5fb5eff467a8207f65fe3552017bbbb54fe8ffd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZN882158138.
Do You Think That I'm A Fool? - Nightcore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79214abdd213d1a3f43a35b741a5181ec3ab886d2d9058ddcced67f11c50165c. 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/UKZGC2203325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf57f081d32a44d9caf36baaa9e9ae5d4fef13d81885895c45da24e321398277. 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/UKZGC2203326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7303286417901f2e7408c20edbafd826319f950553d011e16eb26de14dff8e70. 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/UKZGC2203327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2786a46c688c653a26b9b5c3c7db0334eaf977f146eae7c237e1b3958411b0d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/UKZGC2203329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebafc828c2bc1fcd8f48f43a3b6ee631c21d906931f85c383bdf6a2db4dde256. 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/UKZGC2203330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f1dba54d216487f45a94b36f96a7944b829b928fc2f9518f5e12d024eb0f57. 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/UKZGC2203331.
Favorite Person in the World - Nightcore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89118be74e4738908b4de66834b7f41c61c331468235a345ff510438ac5678b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UKZGC2203332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfefa08927656cebcf3cbcfe035b4ef0d7fe20989bcc41615470aadb57f44bf. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QZN882158148.
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 0xe37131719d528cac420f85ba65ede3fdb2bcd23aaa3268bda363700cd19742e8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZN882158145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e929f34c301c9896063e10b5f4aecfef9ac340cb6e1c2041cf00912e2e8c4c1. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZN882158143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ab5d6d24c6c8d0ba1cd772d7a54e0292ff6ef24ddf6d7aed95003a376fc66e. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/UKZGC2203328.