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 0xcb40453d2145491c179fb09560452801329bbb69184d471b978610b13ac46de6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db98feec-ccb2-4d0f-b494-b24f09fb6d39.json and https://artists.proofprofile.net/proofs/artist/db98feec-ccb2-4d0f-b494-b24f09fb6d39.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 0xfedb0ec5a8ee1cdb369efc16202af21ccd3bf6fe9b200308f8683942de553227. 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/BCJRA2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aded906b0f0bd092e220cafb7851b5c27e3f0e040307b1f579c2bade6282f36. 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/BX0901800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46207cb1b1fe1c7758b4bbcf1d8a5ee95fd8f46f769de66c489354ad10af834. 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/BX0902100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d17d952892b824d57aeb3afe5f7a2fd6ebb3381eac087ac94ac9e79e73abaac. 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/BX0902100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aded906b0f0bd092e220cafb7851b5c27e3f0e040307b1f579c2bade6282f36. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:31:29Z), 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/BX0901800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c309b1d44eabcd4a28d8b61057bb275953f565c0db413bae6674ea8cdaf0b6. 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/BKM2L2300233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b0de93e061037ddb720e494939d1a7bb23f2fde26ff47ca4e0d2df71d5cb05. 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/BKM2L2400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fc9079e04e7112e86ce18fd553dca64c46941c8af328b97552bc71bc2596ce. 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/BRWMB2400588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3232eceb2c76a024f22bbd9cfb36f74fa17ce2ed20cda835981879a287b7d97e. 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/US7VG2493369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f7157885c043f074ac392dac17fccdaa1a74fc5ed289d0b12b1856e5479e76. 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/BRWMB2400477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a83cddebfa1083b8edfd87e99374892652b2e44d4fb56c3aa913b9dd7544bc. 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/BKBSS2300289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979d05d662ee4839a0a379378f5cadfbfbe47d460a1e092e1ca7cda76e02f99b. 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/BRD1E2300141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be85cfa889679231c7c8b8190e9628ba1291a6b978a6927d6b9cc35fabbbde6. 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/BXIV82301601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb69d3ca23e47686287579f8a8c233b9e249f4bbf8641ecc70a519a0e6677341. 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/BCE7P2301327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27311401f53d1195f871919709485393d35994bf96364ad5bb029a9dbd789c4. 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/BRWMB2300887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce13cfd66f6b9fff44c55387bbde5ba05256b8b91ac484462eb57a08a177d8f0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BC32K2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c3015704e669ed4bcb14e90c705a15b1664fbe470407e09d720f7e8a065cec. 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/BKM2L2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c22c0690e4711164f725d1fdbe8e76f755842bd340fb46ea10b0211afbcb57. 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/BRRGE2201061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481c59c3f7a889d15daa8db5cfa0d76ac839995d887ed3d2067c956f77636f1d. 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/QZW9K2207095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a0aa6ec746e9492747fa729d8689184e4a39dab137a7862b461e61caf23910. 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/BX3WH2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5689815acf524a88777cc32e2e9f6ceee8963063dece1748e2b2c3d0f886d4c0. 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/BX3WH2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd190c9ecf93625b7fe3a9cc4ef665e137e79b1787c0a8a3efbd629b68dd07b7b. 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/QZNJW2214151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132ae52a34cdd9de4433331181a2d9febae95fe78a54d288e783f6829973bcf3. 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/BCPJV2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63ca7c75997021ac48a057e40164e79805ac6c94cdf9a010129c8fd2e02559a. 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/QZGLM2254582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810f9a7242fd15de1d9797d25839ed3bf8c1e9068d4d49323897b85596bfaf2a. 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/BX0902100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543a82f03ad7cf61e05929e6914df7ae9c2d0226ba5111fd5fac0ed13c1df6f2. 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/QZNJW2121246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9488713c5e19c8be5e5cd015a1cf2dc24f55c127b0addfb838c458d566bb850a. 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/BX0902100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6960a8fca906924fdcaac67c2b4b1ab7dae67c7e71d6f6a923828e8e8cf955. 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/QZHZ62052797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dccb8515ff49716d4aa7b0c343a2fa7ad40137036520eea21ccbf0bd8c5432a. 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/US7VG2096466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57183f7f0dc071076350604409ddb2a72d33edfab33f9b4ddee470937dd2d6b1. 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/QZGLM1971915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0f87b837710e92dffc8b022f15b8ce6469f28f297a35fcfac87f0883f0aa71. 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/BX6Y62300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f11b2374fb700fc50c5af61f680115ca1dd6ebf0b4111700e67e71e8e912198. 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/BC6M22407857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714a43646d734c6ea912069ccb7f1fd18fff74b5691e9a39d891279c628b17ad. 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/BKM2L2300159.