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 0x15bc4072d2d70bc3de7eac78ffe092a2a36786c7b822675190e7b6532fa36152. 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/c3d30ec9-6173-42f5-9682-0dc11be7a662.json and https://artists.proofprofile.net/proofs/artist/c3d30ec9-6173-42f5-9682-0dc11be7a662.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 0xd7fe2866682af262f5451b028e8ee951ae9011c4b09396766b26741254ced5c0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN42228905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdefc68c913e8551897b63ea39e03609b03c6d7aa213d36e6b808a6b28c5913a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6Q2250437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7592fb109039a8fb591d6136e9eb3d9bfa02f95f98a8d3c59b3aba165b952823. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6Q2250442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f49e7311f9d59d96fbd2c4c8e60da7bb20bb73a80a5cd88fc2ab9736064905. 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/QZK6L2230434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efb35f3219bcd3e569b2e36e26194478430b22cf0d8de2a28fac7837b944273. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTB42203620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7024e0124ae01e2c9ce76bb97470caf150e568a2462e7da3fada0a5d021593. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTB62275432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54963835d6c10ef65a30be3ed381b150ca22db43dff2fe1063fa476feee8813f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BE9HF2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08c47bfeddc68848cd480f580191f522d1d11d40b42707640635fe3b5a44e1d. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:03:03Z), 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/BE9HF2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a58c2fbbba00785d6bf9aad3715cd3f58196c945c042e92e88da22bf4e99e6. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZMEP2359154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b551ec1d8ba7a3b86cfb5ecaff61614c7c76623692359ab78a8be076d91ed6. 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/BE9HF2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8282378f136ac5ca0cf59f10ac01f1b22c4893d546694db19edde8737d94fb. 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/QZWFR2308713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311c16408933786fe90fa802e20e83477945b255aa42bed76da261f3fdb9b92a. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZWFR2308714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86957718b0060f848f6e7ef1c473e9c01dfc13ca15b502d6d54f3422d00d2212. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:30:54Z), 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/QZWFR2308716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef5564fb9b9d6be672f9d3cece0984bced8fd1d18c373c43b2d93a26f627ff3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZWFR2308720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8acc08d196a5eee649fb8cdcae5bdef706546a77133e4264750cee5235dbbaf. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR9W12369302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1aada8e98f2151da4eb7d32efcfc19bd6ad60d35c5bb7b2dcd8b45832777ea. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FR9W12426354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0af45c5859d6485d8af07cca7a3af9cd2334fed1862c6bdfbcdb5400f2ea10. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:19:47Z), 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/FR9W12426348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d76a1fdb2a9dbea8f08d8b3fd7952a3c85799ab6207dcde9e1ecc64bba0bf3a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FR9W12426349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadf3fba8adbaa1b00fbdbebcb78fd01c3a924544e512f9277608233e6622748. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR9W12426350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b24d5247a027b56de9313f2a82255d1c761e20d1bd6ee37d4f11afb97f0b38. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:17:42Z), 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/FR9W12426351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d4a35cb96f436edca43c35d5947c5fcfb28c9899777277b0236f2f1da07eab. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FR9W12426353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1aada8e98f2151da4eb7d32efcfc19bd6ad60d35c5bb7b2dcd8b45832777ea. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR9W12426354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636abccfe2a84b2d747609a0bc49f379e41ce0102939ee4b1afe0e7ab0abd09e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/FR9W12426355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c754a0e4a2be454ae837ac704ebc46f185ad67bcb799e12f8eda30bb8e295b9. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR9W12460493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11731d31ed6f80252c9e9046de2fa4fb57b5b363d9b03a8b95a2d183fe17a792. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZZ7T2546335.