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 0xf3100a9162e681853d041e8a321aeae3075e89e0bbcabb10a587b8783ea6bbef. 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/2f5b7984-bc1c-4a1f-9930-f7f3f7f9ec4f.json and https://artists.proofprofile.net/proofs/artist/2f5b7984-bc1c-4a1f-9930-f7f3f7f9ec4f.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 0x1a08838c2a474467656298aefa654b03e51871a919705c00afb8997661700550. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/TCACU1685229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e0930484728c9a97481d1c7fe5fc90c9121656ced4791deaa0a355a126077b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:26Z), 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/GX4R52258065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48591bb3fc7cc91dce60d4cf7294e7824e9938ec41f387fd2d1c12d922f8b97a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:17Z), 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/TCADE1759351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a77bd74961733e6c65e58d05c88d855592ac971e937018541570e73857435e. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCADZ1842708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55b3910ee5d44f498666f85b9fffd47c370e33e9804f5d2e00a97e488a7fadd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAEL1937782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd598b111882c6e662c4ca3bff21b12e4f385ec3deba689cc54801b88cb42d7a6. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZHN81938682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bbc0c67bea147f32b6463981ddecfa1422e714e52e899435ee9f883b5538ea. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN81938685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f71e12f0139f2860281e69c3f9a564ef86e420c53e48130fb220672c60b8529. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZHN81938689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c4382dd4a2854761a7873e9679c1bbb4797001d52ecfcbd9c8d00cf1e17be2. 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/QZHN81938690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb7237bf28adbf2abffdb8ddc5fb66539543562ff7394a79df9882619b2463d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GX3HH2192527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c67904f0519d408c609ffd03da733accda3796edba9475667b51d044abc336. 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/GBSMU0027511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4263582c33a68ce0d710942d58d2efbb56a82a929843d1eda37e062ff19e1f3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBSMU0025180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694921ee38205be32a060528abd0dbbfc0eafb2745acfadb8cf2390ee0a8d346. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GBSMU0025185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a0f39d0da8c1b91fd39b48a667b028afd548a0710dab84759bd50d6b3f1d7a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:48:16Z), 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/GBSMU0025187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35140ba470e238f3730874c70cf18d4a1a0880b1bb657f0e8415f8ff55c6c472. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBSMU0065151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fc44d14a25a1b93d5f4fd7dcf33b48db21700430ac359165d95d6b6368411d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX5MY2186384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd3d819cdab5bb828a74d7dbb8c943e63308bc1def4c8140ea6d31c4066ceff. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX38U2242541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa7a3249812c9a2cf3a9c183d4cca59f3acbe90d325045327abe9c13e01d7b1. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GX5MY2261224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4993799a7298394a429386790cc4219be7d3d266ed5bdda334f24f606a216f2c. 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/QZAKB2303606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669628a23fefeb01950afe1eb9cdc047a225de5b5933517a1b468f944204f54f. 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/QZAKB2467968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639c1848a8fc975d29e8d42fec170a70a28a9540a4d28aa7d4debe995587e8fd. 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/QZAKB2505809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57f82e6ef9851c693edc3ecc43967e185b0386e344adb14518122aaceb10be1. 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/QZNWU2310560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df1a025f9fab8e6fe06a6f5d87e882a751d510343990fa7b9f1f1ac06f44632. 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/FR10S1901497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68c26946131e5f755001d08b187c8b1c4f501f7747eb039e7762c970dce9bc2. 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/ALA091900253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28733e84676b08a96340ff736c0d4679a687c78642576d0ba297de1800935987. 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/QZAKB2420590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57f82e6ef9851c693edc3ecc43967e185b0386e344adb14518122aaceb10be1. 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/QZNWU2310560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd024809415b2a94b26a1c6b8e33d7cbcd8170440e15cf69cd5759c698e8b1337. 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/QZAKB2380779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd024809415b2a94b26a1c6b8e33d7cbcd8170440e15cf69cd5759c698e8b1337. 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/QZAKB2380779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd024809415b2a94b26a1c6b8e33d7cbcd8170440e15cf69cd5759c698e8b1337. 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/QZAKB2380779.