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 0xa59a8f368d873332fa19ec4786e071521d0e24f5788616eea7f4a0d2c2c39c80. 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/17a80825-cc03-43a8-bf1e-b4203251cbea.json and https://artists.proofprofile.net/proofs/artist/17a80825-cc03-43a8-bf1e-b4203251cbea.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 0xea21f0697beff65f74a869ed7428df366f66a453ba1047e5ab7dc5143b7a9b08. 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/GBUM72310957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bb51218cf507c600a95ffc0e948aedf933ea56442f30b6c8db04c7c5e402ae. 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/QZTBD2349891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192945c09d73f3498c8c1f97d8fdd6161aaada0fd6d5c5cae1a575189a2524c1. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZFYX2493653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22dafc85ca2b4eedee8d9f6076aa9f537f73bdc39ba0ff78848bf2da387c5bb2. 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/QZFYX2493654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba496cd4b7a1ef9f46279a3d404fbfcd7493e5a789e0570b03108e169873961e. 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/QZFYX2493661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89114b341aea02d7daefa19025d9a72181e28864410ac51138d6383b3970b3cd. 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/QZNWQ2296479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a957b898b6a96e5066885abc07680d6b794e9fae230ab4bdda1386f98a1b64. 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/CA5KR2189201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14d5b77f86ac727eef0d492f34ca49c18541a59cb21bc6e794185801161305a. 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/CA5KR2189203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127e19f6804e82a5cbecff955f25ad27d8497fbb4bbffe5320076d75ea47eede. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:19:04Z), 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/CA5KR2189205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510b62e051a6b208182b58cae350637101816eb134aa5431071a8f98d2fb1d4d. 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/QZQAY2157914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbccef32289a98b35f13c9bd7209b8f433f193f9f3ce37b6fd47c19acfc036c5. 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/QZQAY2189385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969973879d0b8e6a287aebb6bdcb24f160ff57f0c9b0b7c0440bb035867e8aa8. 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/QZK6K2484144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9499cc313609809390d3a109443dbd199bbd4d54ad83b18a2be06d404831fd. 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/QZK6P2417582.
Biggest Regret (feat. Bbyafricka) [Drum & Bass Remix]
Biggest Regret (feat. Bbyafricka) - Drum & Bass Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fb633327f6556b2dd5295a21bbfafb421b4976de99ed64e0363223301517bd. 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/GBUM72400811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea21f0697beff65f74a869ed7428df366f66a453ba1047e5ab7dc5143b7a9b08. 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/GBUM72310957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2c3376a10f84c9cb402ab7caf42ab8f81f987c3454f35ceefbfba1ff11b44f. 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/QZES52412899.
Biggest Regret (feat. Bbyafricka) [Drumsheds Version]
Biggest Regret (feat. Bbyafricka) - Drumsheds Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c7bb7053c7503daf8e91ffcafe935aa739beb5f6b0d12ded1ee87dd107417f. 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/GBUM72400695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea21f0697beff65f74a869ed7428df366f66a453ba1047e5ab7dc5143b7a9b08. 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/GBUM72310957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bba6288c92cbbc211ed4dc2969aec3884709f4ffeb395d014e73dac1e189f5f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:04:08Z), 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/QZWFL2319687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bb51218cf507c600a95ffc0e948aedf933ea56442f30b6c8db04c7c5e402ae. 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/QZTBD2349891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3b64e8d901a626f7d85a4a6c161165d5bcbf5b5446e9293f104754ba68466e. 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/QM6N22329660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646858360094dffb8a4dd3f69a39e46ee6f2a082d6df092b63f1d5c98fc0d26c. 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/QM4TX2386940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fd736e620804304957c2bfa55affd22e5ed4b2c59df3b99079fc744308b17a. 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/QZDA62114196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd391e334c139b02cef4a58406fbd687a94b90815e4028da7cb38a2f3a7feb2bb. 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/QZK6K2077071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbf3e6f692eda6ab8696e6eae54f516fb188e2937e248f03588b161e93587d2. 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/QZFZ72001202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f395f33b964827aa6486413d25e8e288ecab1b406f4a5abc9ba0ce0d909f6db. 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/QZ4JJ1809475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddeaec3aa5e51217b4cf76df5f1247319c55be1fe8a4813ed5352859afedb76. 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/QZDA61892138.