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 0xb69404e5d24255c904a463df40e5e6d862e23783272224db3fad3cbb1007dedd. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3e7a22e-3b4a-4eff-8bec-48782eb3131f.json and https://artists.proofprofile.net/proofs/artist/e3e7a22e-3b4a-4eff-8bec-48782eb3131f.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 0x5056441cdc8648a2e697ef514c690bce73602e2e32b77b2358d9ba96cb085f67. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/TCABT1418823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e093d2444fa9ca8800f4a349464796b0a12d8aa158f07fe789635d5be1495cb. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/TCABT1419126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d05fc43d4f9fdeff870c3413bd4136542a09a89b6cb94e286ba29ddd6930c6b. 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/TCABT1419155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1166a8d2a5de5bc7856cd0f12ec4ee4195e3783a9bec3790f4d9d578e68ce0a0. 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/TCABT1419425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b7760bb06147b2f79626dfd7b1fc69a4c9c13985cad273c3b760d6d37e1532. 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/JPB600110604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7aab379f4b0838a517406dc468fc0f293fea596b4e1ba9c6ae9dad6757b5ce. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/JPB600630607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb68b45d282bc6f9be12ec65ac7da1af2590959e151e29694b7d1eec7469bed8. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/JPB600150212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b5460acc26fa3e0a4c17833b8ca364ec498e1edb72877d9e36b41591ea008c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPB600150215.
EXPO EXPO - dj GEETEK drum'nEXPO'bass remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3796941e8157fc4089aa264fdfd57fc68f5a9dc21a1725a2911e16c963de815. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/JPB600150218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b7760bb06147b2f79626dfd7b1fc69a4c9c13985cad273c3b760d6d37e1532. 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/JPB600110604.
Tierra Prometida (Promised Land) [feat. Jason Chu, Godilla & Ann One]
Warrior: Season 2 (Cinemax Original Series Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449b8b7bb9818b470590e4e2a8664c18c504dac5aa24fa7b407acb9955bf5b4a. 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/USNLR2100515.
Warrior (A New Legend Begins) [feat. Chops, Jason Chu, Leo Xia & DJ Bonics]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d15578343b7e9c9f388d07a362dfd2b3f9479d74e52ea4b121701ed300f6e4. 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/USNLR2100516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc8a64ec709eb8ac03cb7affa7f231c8976608e23d4640ac0b953ef59573b80. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/JPZ920607087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb68b45d282bc6f9be12ec65ac7da1af2590959e151e29694b7d1eec7469bed8. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/JPB600150212.