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 0x7e352238e787d243859321f651213c2cbe327c11a4a862c16175defc1217a960. 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/a143405e-5e84-44e4-9acf-56f894d793eb.json and https://artists.proofprofile.net/proofs/artist/a143405e-5e84-44e4-9acf-56f894d793eb.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 0x61976c9be510d43b1000f0b1add2030291cbddb47135883d563b08b0787ff152. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USA561189309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e02a17529ced1643974e6f0cabcb6cacc15a8d52bf1da06775907cde191cb80. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:42:06Z), 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/USA561189312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb601add7bf6c4cf0677a8cd82d5601ad05281408557f4b305f67a476cc487978. 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/US3L30404915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f07741988686834e932da43f6783e30a1dba231b283af379373b067dc47e86. 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/US3L30404920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a52b0c4530563f841e709d86b3af5c463d654ee838e839865a0798285e48a6. 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/US3L30404921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ee4fe83e4aecad51263d4b44a58647ec691877d7af7a9964276dd0d48f053f. 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/US3L30404924.
White Girl (feat. U.S.D.A. & Young Jeezy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8620c4d1a27ed911e3834ecf1cda7161a12d8a5ce70b3053c4e48405980881b8. 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/US3L30405563.
Itz Me Bitches (feat. Swizz Beatz, Lil Wayne & R Kelly) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4fd0b6672dfdc8e84a5ed63d6ea1f76169e54157cb40f133818072903602e6. 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/US3L30405581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3d7daea9046fa39012a4f85fcbba50b53f16194775f104dec58a2e35789406. 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/US3L30405591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016bd09501eaf2330ba1a9cb7f0f6fc3d358a2c8f11e1432c3a6fdfcda1da0d5. 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/US3L30404778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9587b2c9786a03f171fad3e18a88fce500f148d2b7d2128c46cdf48913080514. 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/US3L30404781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066533948d1e4927e69cdd1e184822697901b17e39083f6687b15ba43fc20cce. 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/US3L30404785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113a4f80b5ed160953635dc46714af5064c183d46ee808dac8406dcc010ea0eb. 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/US3L30404787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eec32c23963da7b6abe8d43c28fe02f95ef4cc93e5d99cc022696b7cb2d409b. 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/QM6MZ1592553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd659be739bbe4b3d4e7b8e6ee789e7bdb0ca31777e6af643ede5b4de5b0ac0. 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/US3L30404799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2539387ff863281ce348d1ff7aae8dea3a435f59dde34b6ce07ceec06858be. 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/US3L30404801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6555312c11fc158b94081688d8c61707894fa33b5750f304732467b5a0f57d6. 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/US3L30405970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309730cfd5d721b9f3cb934bc19c73566697a0d55269f48edabc7a434c8bfb57. 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/US3L30405974.