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 0xde9a362f0405d05b15197bc850a12b6dc51db3403b499b0828689c855e0a92a5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e54b2e19-9a66-421d-8714-e93bfe23f3e5.json and https://artists.proofprofile.net/proofs/artist/e54b2e19-9a66-421d-8714-e93bfe23f3e5.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 0x0e38066b6382e33185fea872c1074f970bd998317245d4dc7d9ad534aa137467. 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/BX2972000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5441a0c8c8a623ca2885c803b3d52a29e599239cc7f18fcc993caddb1489966. 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/BX1KG2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1678d03640cc050a126a1f6e431fd3b75857e085eba368ad9bc15b809a29bbd8. 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/BRQ4H2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28bec40cdbadf0cac719c3815d2e7e77820f20dbd89832c759306160bdb9096. 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/BX5UA2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b281c056569b266cff1afce38a942000c72d1fddf0b96272b72385742718866. 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/BKNDN2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b76d60494f31bcdd33f3d2841752bfb32810b108db1445f7e55f289c9f06fa. 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/BXZGA2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a00718f3881a0211c737e7c7dd03f55c27aea1c054008e90a0e2700b72f71c6. 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/BXZGA2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478053a52efc7c529677bd28816212c727f80193f42d0d81d483d2cbbb8b01f9. 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/BXZGA2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadbc64fb7fd7abd7b8bdf5da9ffacc3d7a4ef96392957fccc5e6381354b3bb9. 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/BCI932400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338e66d7d49441cd442b9547255199f84ee9bfd6138eaf1a0b3405491a4a3a83. 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/BCI932400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddff0702470569288c36ed50f45fabea46f4d451f5e6186127d00cfd2b29687. 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/BRQ4H2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7562ad97cb01efb0e09f46cb7a3b6a47e20f777b6f53bd698238aca4fb2bd6f. 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/BXZGA2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa992eb1beaa8942c4e205e3ce107c0dcf7ff68651747a5f1654b11cb72e6bb3a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXD2J2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a67ebaf55bd46b8f9f3d42454bd2c9889b941083cc4b395c336cb738ae56b1. 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/BKNDN2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44794e3fd205c45b1b0ab8e67ffe56c71bcb59bca1e658d653bb2be698f92739. 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/BCWAN2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4aa8b7555b1edb37bffc5410c9498b59225302342545693a0a9eeeb0bf0380. 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/BCWAN2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4351659fd5e7fd9396f95ad6e7d686b75341c94ca32fab65b41ed1b86b38c9. 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/BCWAN2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437514ca610c257c36d7ef72752a128251fd3f91b6a89523dfa2ce21da83a9b3. 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/BCWAN2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225a0f58a86e593307f38d75434730381d67a83d7ef6d4e91bfa8793caedcff8. 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/BCWAN2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b7df2b70d2b69df3fac8e986fea618334e7a8fe98356aa0492913986e9c33b. 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/BCWAN2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe492b19384e99a9181ba9b8d34fd1b3793bbb907319045a9da0e12f8a6f3d83. 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/BKNDN2500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67609e369bdbaa6e4d28c2732da27a6604b4e984c3c88046f359878c9fef8d98. 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/BKNDN2400139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa122ea8bd30fdd7fcf026722baaaf70d66a76c13ab93fd6c672e097e21f04e7a. 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/BKNDN2400197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5b000bf09cccf7c8958f919b67d0b2be58e20b5c5d6b06ec23c1a19567177d. 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/BKNDN2400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3624c601ef0f42da0c432f3d957aa6227a28efaa811d19562959cfec40552069. 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/BKNDN2400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dce24aae1008bd44fdc2613c7905629e8aee4115ac8b3fed97fd3c2c50c113. 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/BKNDN2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f95b4521bc5c9b080d84229a2565f1916b29f5c3108240d74dc093e8bc65df6. 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/BKNDN2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe302ecc803ee28073951330d720c1e7fe97c3c2bfe0bfbf1171716a75e0842be. 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/BKNDN2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c90dd07db35020c8771688638887cdfe67ddd73072148de9e39d94e3830a8f. 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/BCO3K2300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943ae951d0a76baf1d20968f9b2acac49f0abd9a373b9b337f62fd71c41628f9. 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/BX5UA2100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d8b39cc53215fff0b42ff827abd8214c55c8de6a2cc74725e745f18696426c. 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/QZHN91926104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd220e4c1b426a6997e45d5b0da05bb4db9c23bb9626d417611e0b31750a35761. 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/QZHN91926111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a10ac965a8c56cb765eccb7e8e48ff02592d16b98b717162e44a09877b96ffb. 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/BX2972200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee776b7f29c9a94f19be14c86e534a790f682cefa446fcf5a29583bc6775bb5f. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/BXIV82396030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258c8654bed9e5c66a44d13c5f10ea654799f4c9c263193c0d69dad7f52945c0. 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/BKNDN2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bae0c9e004037b6f29dc65cb463571980fa4ef964ef5c52fb6f0096e55a4d3. 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/BXZGA2000001.