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 0xed76b8e9f8e82f4ebca1dd6ccb1b36bb8b02e842d3e0cb888706ed4b29876826. 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/fccd3318-a1a0-43da-9f9f-5b2b03bd8240.json and https://artists.proofprofile.net/proofs/artist/fccd3318-a1a0-43da-9f9f-5b2b03bd8240.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 0x0f91e2428daef15401f3122594a7bb13225ee0f751b3558895d12398bb3202e9. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/SE5BU2370134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfb3eb95dae0d3c47591a156ab980583da4dc56cab91419ef7cc9f55c47507a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:10:12Z), 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/SE6I32391992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c9827af81e1f9fcd8e001cbf99a6f2b7eb2f6383de4e74fc7c238f8554cf24. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE6QE2369402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1523933d3aeacf12726374e470a5b22470f3b78ba07f5483c7192a43d34bbebf. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:01:22Z), 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/SE6XY2333139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfaf70b1c6d065c76916ab43f544341714235ec1f56713fd58a37a678eede7b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6XW2375058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67632f711300599aff3050c4f587a034a3441088e117349c8e73fc783d704ace. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:54:44Z), 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/SE6XW2358372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8d8c9794be868cc7c80de59cb86db029843f020de5017c78cbe794dc4a6ed2. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SE6SA2396451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8733279228ad2ac5f21b8de7e022343753432f331c2d2f30843f37011ed2dc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6QE2382313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921dd8e7251444db9f74f8f51767b396566877a240f427daea9bb89a0795fa63. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:44:27Z), 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/SE6SA2389311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fab6cab1434accac99abaad47272a091fe804b0c5d6acc66e007662b01d3878. 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/SE6XX2397137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602abed7b61c37e542bda3c229ffb8e304549a5d8071f2202459f1ba0e8b29e0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE66N2395050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536ab888ccb2528f969c071ae3ae9b04e4526698e96963dd41d31682ddd6c166. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/SE6XX2389543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41203cacf1edffeff894c9ca9d1655615fa7258f9c275ca0b1e3fab80fb80d7. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/SE6A92372869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159050f8a24a37743ecd56d293000d7df690c9df391aa37a8cebbd2da931c359. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:48:42Z), 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/SE6XX2327359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecd7c8e388ecef123aae19808f4db0ee092dcc371c5ada69c62a4dfd6223ef4. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/SE6XX2354480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539cd6f025011eeb69c877e7cd6583edd1dbf45cf7ba4df2d86c6a38be01c4f9. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/SE5BU2488813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10d5ebdcedab1749ebf53715b8611ef6413b03fd7301acc03deed52a1307f0f. 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/SE5BU2488814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1526432fec3f67b5f021b5317e4ef61491ee92108ce537db734acbe8f6bc4665. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE5BU2488816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f4d9932f695efd30d0ea07b544d52e1eb01d9fdb3ed74674c795bad24c9cdf. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE5BU2488817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8a4b52c3cc35db472432b22ca46f06274c143cc93a11496fa2414c24c8468d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:04:15Z), 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/SE5BU2488819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0942cd7b903c5b47c2edcf05b3fa3861adc838431aaaaa47672eec973cc782f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SE6SA2416189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e766a78566ac432e0918fcce5e12e37cac87d0f3d48e291e6c6573cd1593ba3. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/SE6SA2416190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499478584dcd16c1b53acdfe25a462dd406926eb5188210a5ab90c3f05fa389c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:42:16Z), 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/SE6SA2416191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c076db7c51deafd993ac8e1c5165a45ab6acddc2cb0dae0ea3e23e8c69bf27. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:19:15Z), 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/SE6SA2416194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046879f4f4a2f78946bdf9cb8fe8a13a5bd9fe19dd28a55ce0755754058f46ba. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/SE6SA2416195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c1a307f07b97d7298c1d2a896380f44d08d5c0680121916cc62cf27d7fb082. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE6SA2416197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68f3c7d585651329112b461c8d4e521ca93091c486267d93ab1ba770e490b15. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SE6SA2416198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad141d9252ffb0b9a00f4635c060e0e5b681faa771d4d15e23451d6d2ae5968. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE6I32438054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd46d0560c848f616fea694cf92c4e27708e91070468b4cfdb6bae2616acf340. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:31Z), 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/SE6SA2416199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8582a60ea54656c989783915dfd77fc0839d52cb07e7eaa618c4dcb9819146c5. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:32:32Z), 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/FRX282527239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a72098f85e974ad21f3d0ef117b7aa6ac3c1c990f745d55044cdb734742dfa. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA052511415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79daae4dfb8145a9d7d252fea2bcd1f5c7469be2361051608a8115774f4537ff. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DGA052511416.