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 0x4ae9b42f9e2b36a1df0e108fde8c318c8d7054889f2040557e46a94b8e3c83f0. 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/55ef1647-8c66-4f3b-a3f4-6e5a8b7ff46c.json and https://artists.proofprofile.net/proofs/artist/55ef1647-8c66-4f3b-a3f4-6e5a8b7ff46c.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbc90efd698c45f17a0044b0d3846016ccb95912b8a32339d29ff7a3b8918c6. 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/BEN582200394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa43a478bae03bf55e1d848573c0cf174ba42072ab56042aa1bb6959be01c15. 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/BEN582200395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c2f5c211274374b28757a8948a2723852af0bd2c316d4aca90e12c0e2fc14a. 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/BEN582200396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07401540b096567e11db83be77c43ffb142fbdccf4b41125e3b86354413521b. 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/BEN582200397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f621f6ae9c1e7ec25e2b04762635f7c372562ab6a8568d2d35dc05d8c59415. 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/BEN582200398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4ab8329745e63c3afeef744c7a9072e4c65ba8774720a6a20913c3d1cca839. 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/BEN582200399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbf3bafe8dc6e8afc439cdde6fe8b2fdf35db6ad0e30ac63fa4fbe12bcd0c4b. 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/BEN582200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddb85dee2bb46d00709c717f984b6be0db41c5b1a29044dde81430793b1dfaf. 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/BEN582300890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4144616f7f110957d09aba00f21f250124c708ac53460794aae79f5359fe6f1. 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/BEN582300903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a717d5711ce5ae4f03ed7eb9055f716e1bd5330ed1b0f49cfb5bbc09b6fe667. 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/BEN582300904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666a27f4b0d810c2548bbb7eeb194a8e5d8fa8e350ca24d6231c4d4ab4d1ef55. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEN582300907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0778545c687e7792b3ca2299a3c1328d4fe8d520df197a9588f7f6f757d790d3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEN582300908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbc90efd698c45f17a0044b0d3846016ccb95912b8a32339d29ff7a3b8918c6. 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/BEN582200394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa43a478bae03bf55e1d848573c0cf174ba42072ab56042aa1bb6959be01c15. 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/BEN582200395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c2f5c211274374b28757a8948a2723852af0bd2c316d4aca90e12c0e2fc14a. 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/BEN582200396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07401540b096567e11db83be77c43ffb142fbdccf4b41125e3b86354413521b. 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/BEN582200397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f621f6ae9c1e7ec25e2b04762635f7c372562ab6a8568d2d35dc05d8c59415. 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/BEN582200398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4ab8329745e63c3afeef744c7a9072e4c65ba8774720a6a20913c3d1cca839. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/BEN582200399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbf3bafe8dc6e8afc439cdde6fe8b2fdf35db6ad0e30ac63fa4fbe12bcd0c4b. 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/BEN582200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddb85dee2bb46d00709c717f984b6be0db41c5b1a29044dde81430793b1dfaf. 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/BEN582300890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07401540b096567e11db83be77c43ffb142fbdccf4b41125e3b86354413521b. 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/BEN582200397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c2f5c211274374b28757a8948a2723852af0bd2c316d4aca90e12c0e2fc14a. 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/BEN582200396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbc90efd698c45f17a0044b0d3846016ccb95912b8a32339d29ff7a3b8918c6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEN582200394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2506153dc1ef6dda50a2efb90c798fcce4aefd245742887fe682342364a756f5. 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/QZHN82134923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18eef4231d594abcff4c7bceeae072e474cfb8325f29b8552421481faedd7e5. 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/QZHN82134926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2506153dc1ef6dda50a2efb90c798fcce4aefd245742887fe682342364a756f5. 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/QZHN82134923.