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 0x0a24ae5687e37d46684f5546178b653759301c11f7f06a688c104b7ee77813d9. 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/4d636ee3-35c4-4cf1-89fd-02db2a977d51.json and https://artists.proofprofile.net/proofs/artist/4d636ee3-35c4-4cf1-89fd-02db2a977d51.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 0x3496159558690bd2341579e32651c2a6ef9466ec7a99e81dd8afe1c4682f6e78. 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/BR9Z22200257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3beefee81701251c2f9c68b1a09750cc8c67be186549efb7d8858535f31285. 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/BR9Z22200222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5876f6bea74a26ff21caec8a9826d36e3df5ea7cd3eb9e76b9cc72833bc4961a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLS2546015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898214fd5174f67c94f3adb2555ac0a7b990ac698b44dd60ab4c45ac1fd8ff06. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK20B2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39147c50a198251156f0f027f0835b8db23d7d4dc308a9de56deef38c674b1f2. 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/GX3Q92507228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62516736b0ee81f8b8391dc927747d4c6308a7ee3fd3c6f127964d04945a537d. 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/QZGLM2594106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b316a1bf0d5aab80cb1e6230a46b75e565f98c7b70dfd1ab25bd6d39dd87c7. 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/BR9Z22500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f322cacbcd6390f987aa2ede8cee3ada31636d5d85b636673dd02b47f1c2c3. 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/BR9Z22400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95947cfed073d419c4a39161d2d50b05c66eaedccaec28f12e4d11fa2fc0abd. 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/BR9Z22300125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823e96631b332278050792a7c460bd8fc4630d9cdf325538114f71d3224b16f9. 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/BR9Z22300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9187d64fe1e64a02818f20986f6f9f27e9f39456ad280066bb6ee1c8c5296989. 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/BR9Z22300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df69ebb4e56cade9ea083f52b3fd19ab8638a96c38af5c29e853d5796eb3fbd. 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/BR9Z22300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84330957cb08a00c3ce7d432723a2ed34c888dcd982329872f3cb62d08d26f2. 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/BR9Z22200204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72e6c9edff7a6b8a36c189a0953e186c9321f4a35e53657eeaf0e0cc9f4f7fa. 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/BXARK2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a95bdba807b4c2285660c7d803a562d6c521012688be0111ea37464b6e5820. 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/BR9Z22200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadad5293221d85a9473ce71113d0f52292d864a966faa2da29c1998d939b1964. 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/BR9Z22200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50508d5e848490f1a49412899dc5b8ddc2223ad483545ad9e8e5e4b0cb97ec4. 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/BR9Z22200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0deac11568795291184e2ca1662ca3c15a343df1f1a633d3cb51f9efb55b2457. 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/BRE2Y1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9fb85937a70b1833d432444bfb36c099de23e22495c3d64bfa2c0e07e2589a. 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/BXBMG2300577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cd4c0c95a77abef17d49398d76e5449ff186dd18e481a3b168d865a26d7691. 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/BR9Z22100219.