Romeo Montague ( ) is the male protagonist of William Shakespeare's tragedy Romeo and Juliet. The son of Lord Montague and his wife, Lady Montague, he secretly loves and marries Juliet, a member of th
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 0xe620c79b3db976af77bc8d0349780aaaa74d3123583096c6bb635e984ed0e14e. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/881e8e57-b381-40b2-b02f-54d5b6360888.json and https://artists.proofprofile.net/proofs/artist/881e8e57-b381-40b2-b02f-54d5b6360888.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 0xf5a29d259fcaacdf2fdec881995d3e4fa44507ec573a234de10b9c83caef3a63. 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/QZNWV2005031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf778491652a050ec0df5851f04c6b08bb9a013c378af9874046c9e84480ad631. 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/QZHN52075591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dfb19752daef30eb9e9dd3e3c7adfc62680c1401bcde161d3854cf1df89fbd. 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/QZNWT2204975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66556f7102cab123f6341a92f383aa4ff9005521eb7886b02fe648785dcc21a. 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/QZHN52076921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8d4c00b65a1e9e311e482b8e5e6f908db7eb735b6dcb1b2ea74660c210abac. 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/QZRP42365181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a57be1fbce15f5c24dc99495c79d63f8fddfa5b67f4f7d9f7eff16395f86ac. 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/QZNWW2186344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6809cf4a3a9838a7cc32983fd360c0cbe02933c4feae3facf787c30e8730cbb. 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/QZK6K2013563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b2363d76385666e755dc9c27b74e770bda6d05f18766ae0f2b0c0bd3c43071. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QZRP42365182.
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 0x8c55b8e3e8723d1c5f9102afa431b04db7344a28c7d99e06bf6d08a311bd1ea7. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:55:13Z), 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/QZK6K2025299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d7de295c193ff38bc5a9aad6d9efc9d9e6496817ac012ac7cc43808bcc78df. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QZRP42365185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf677c2e7a04e726c0b02441b6ab9a88f1e1d190f6b77c99b18f66f486df5f10a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZRP42365178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6eeda1d2a3a96f8df8ff1e987895456ba0ca86b74255bc614343ffdce6e7780. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZK6N2068002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14241075071dda44cce4fce3ebc427a5db494696d57464141fd4f355c867fc7e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZNWW2186342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48f9c1310bdefcb3811dfcf0567b53686d2e86f4d886fb2f87f6a613f2fe387. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZNWW2186346.