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 0x71f7ae534717672ffb9240ea3f3078e636f1ff96b8c457143463bd4e8c03c81f. 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/d211b9e6-4753-4857-a4fc-eea155952e4b.json and https://artists.proofprofile.net/proofs/artist/d211b9e6-4753-4857-a4fc-eea155952e4b.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 0xe2cbee48a9683de58aa76b696c98190f5f5b6de536f8b4ea74c89cd1e24aa66b. 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/KRA382321274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e20a9b42fc1e6c165ab849f1e21082e89ccf4b8657b9176ce3166e2e185bfd0. 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/KRA382321275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48152bbfd03158eb37dd9da54c1ab85f6e2cec464ffa95d1e8c39219f484ba1f. 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/KRA382319753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb77f50fc1d5986e525cac5b89442591dc06a9096c726c8e8726eeb2646f9774. 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/KRA382319754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f921ec75bd6cf4d0a56ac026fdec9faf9fa77408ccb77ed309fd52796b7354. 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/KRA382319755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ff6a30c62600a7dc34957d8fa871b7aecadc709e11f197ffec541ba9b35e3a. 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/KRA382207787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88de11184295ed9b42e6d0524323dcc321efcbca51c8a7a2391002b4fd3ad05c. 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/KRA382207788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962789296a334e2b800e276386d24a3ffa5adaecc19a19b03127a8e719065169. 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/KRA382207789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c57f4eef370ed0e4a96f1d53565fe247acdfca95e64fa76babc3d30230a21e. 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/KRA382207790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81648f52ee37c7208f71eb56e0f6ecc36245848674fbd6c3365db5a05f6ea508. 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/KRA382207791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d66b83f577423ac45cea53b25bbaea92347cc301f2d46cb5d5f321af940e289. 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/KRA382207792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba53454fc9c77f5316042eaa0f2d0fd964402686a1c6e05173bd87df05fe48a. 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/KSA012180174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2094d9b1a61cf70d22e0dc3ac67d619c6b650dd63c7f42682cdbdb143a08f1f. 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/KRMIM2236416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400669c43593f2a475f34c91bb772426939d36ff7eaa750ea4798e98f19e4ece. 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/KRA382204214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ecd55adf16fd0348b65b4365cd8c2c6cf240a7a5ab6b570ae318a9ff63e2dd. 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/KRA382204215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd1f9423776f06c855ec748a61436b69cbf455f7050a5f99c08221d0e810c00. 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/KRA382204216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9573f3804cf478cc04de86b3a99cf497e1a48003279b744431d3acd3eb0e9f. 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/KRA382204217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a8cfdcdf8007adb932d37768cba61db5e327a8dfce118b22c8c61af7dc1f21. 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/KRA382204218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a92dfbc562d762a924ab636994be38470cc7972b71658b47c9c44322b91642. 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/KRA382204219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8add80fe75669ab1bac8aff3d5cf17e8d4ed52c0b767e3c05fc33287433cfd75. 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/KRB462200245.
Rookie Cops (Original Television Soundtrack) Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3947c68fe54acb1a45a2f5f097ba7f1ee74095988040458f5cdbae39389049d2. 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/QZF452009631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff7a6e583ab492713a7327f0bf32e4c55d84cc1222123abad3bc232a0a87453. 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/QZF452009632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5515a2a8ad5acce31a157bf2420575389c6a2833f6a522718dd76416c68aed. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/KSA012145131.
EPIC SEVEN (Original Soundtrack) 'Energetic'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde53d96ae41797694904693efa83e5956013440287bc6514af87a83bbfa2ad5. 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/KRB472200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe578d4b58248b1cbaaa77ed90ab2f2b55304615f13b0298a64d99f430be1ef50. 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/KRA382160180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b1c1c22be661732faf7e2c9fc4efaa2a2535e68ba00725309cbe27e29fa0b4. 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/KRA382160181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8526f0fb334be80f3b2dd807d62fc9ab1d30bd52db548233853f1bea500d2d3b. 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/KRA382160182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4967689a2728f555e45616b46ca099595d5227f266a831fc18baa245924c45e8. 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/KRA382160183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d259b465ad19672aea02ab442950abeca700e4e197ed239bf3fc1c632491625. 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/KRA382160184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2833034f42ab653d96d7256f9c8ddf604e8c5dfdf30150f8ec5d38254a0b6d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/KRA382160185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea601e9b9132c01ac84753835f0f9cb739fbcdd07968f75906975bf0ade45c57. 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/KRA382404618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6dc3de836caf8cfb01586ae098905ef0a92868ded6dc95fd50a92e76be63e5. 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/KRA382403703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5476388ed357ef758acaf3ab31f26b3026bf6a85273c753c5be46480f1090da. 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/KRA382403704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbebfc3b284f7137f1f851684df3e30e7398e7f4a7a42239f300836bfe671744. 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/KRA382403705.