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 0x0fa4a4582cc68757e65c38f20f2d4c1161af3d7990ac53f06b414c8efa568771. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45bc6e73-9ad8-4f88-ae1e-41d90f140c20.json and https://artists.proofprofile.net/proofs/artist/45bc6e73-9ad8-4f88-ae1e-41d90f140c20.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 0xc3e4b1ad449966229c8cad4ffccc8f3a87eb253462591b6251ce39d3894c8364. 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/BEN581900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a74c084c3bb041d85f3599c79065b5e75bae1aab3d81156bf0a544b6b8dccc. 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/BEN581900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed813eddfe85cc4f9c848ad0b31832a684166c66ab6bb0ca758703660676327f. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/BEN581900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dba1ff3e3e3870cb197a1fd6f563770dae6bcafc02a9b793b05bf7d587beda. 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/BEN581900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2272f8accb35a61070debd4b85e75df9462789795f9ca00a68bb0a4141fd597. 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/BEN581900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319decd1fd8375ca20f67e51b138be35148fbb5f44d6ae91e9c4f5aca56cc7fd. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/BEN581900027.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90136d543e13ff7963af21e04cf7d13d5226d8db9ee60f72dc6760bad8b22edb. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BEN581900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c99c73508f2b6c4d64b9c6d47cc00c3b5bfdfc1cb00427fb7babcc8d69f02f. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/BEN581900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fa0425deec7952f6fa4f20eed212c5430beef6bed9cb4a362d2c7d67f63911. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/BEN581900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c4973918bb8d54cc550deb9d689696f289ff89960f43096d0b7601359bb151. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/BEN581900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b435987d2af937646de1bdd9ad2c8f75cd7cd5a31a688cb9a754e0a9ad0cb6. 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/BEUM71600133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32c6c02ae9f812c61720f3054948772148df439bac05a4fd5cbfba77b575c39. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/BEUM71600136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1072376614de7e50748d7f2f6019660401687aefe393cadf49afb6beed2f0f. 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/BEUM71600138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3085acb8855080efd981396e6c1199d02dc0fe00b5839157c02407baa322f79a. 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/BEUM71600140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afc8ef7ac5efd9f72635bdf072914d7fad6b4f8579b9975f3573b46f0947576. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/BEUM71600131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1680ad4b8d2d21eebcfc608fad83244e27ab63bd30fb88f2e82da243991c9e. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BEUM71600132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4845e71f4f7c72dee9cd51aae1fb26028e126e066da167f7bcbc8d5bf1846d. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/BEUM71600134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6705800297ca3f9f24773cb386af7eb165094f0c7d726bd81c0c92dfd736cd6f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BEUM71600135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598879a8153e1314ec39ec0f318a8ae38b7a076f735d8302f6341f1f1d74f61d. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/BEUM71600137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b8559d7ee03706a695bfce7cc33d31f166e9db0b3d51b9e673ec7cab2ba033. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BEUM71600139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb17e310e2b6d1cffadc4aef052be8cf7b325635fafdb30298dc807976992d6. 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/BEUM71500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e27d841f98f3405f9d2f51a0be5762d6f1b5159a8e76586b59975be72465385. 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/BEUM71500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dca0ca126476c9420aad693536ede75b0e7b07b1ca63fa950f5938b7fef79f. 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/BEUM71500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e1e7c209e50baa607c14cf14dab007d0b014a724817e07b0b61cf421766794. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BEUM71500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176c6d7671edb34bdd0a9b27931910ee90e6881c92dd0b7a1a1e23db9f343f3b. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/BEUM71500096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543a215c64f79d1804da71b72fd09509364eddb4f4aebde8d9b2f31876098c23. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BEUM71500097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e3e279b02c0c25aa09b41b1b16b414b0ac37a0e616d97d9603766d2c4b512c. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/BEUM71500098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72235f69c3f2ad4db7b27b75e8f9e823b55579979c3861d01ef8ee78ae97885d. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BEUM71500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036001be28e350fd99b2598b45014d04303b3a8199576f5dccf2965482540603. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/BEUM71500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1326472d78ca06742e25d2e16a61aafcc9808cce36879b7a82d69b5704edb909. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BEUM71500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a4203e7f854a39e4904a51eb6455aaf7f40640e726d4d7ad9020c6558cab51. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/BEUM71500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fd08bf7039f9f55b31d36f22982a74cf1d052c08509dedd2e998f1e3cdde7b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BEUM71500106.