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 0xa158fd82723d9191e7c97fd18bf48b619480eec26d3ab61bb124d14858fe665c. 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/46951781-f92a-4dd9-b9d1-266d75f670cf.json and https://artists.proofprofile.net/proofs/artist/46951781-f92a-4dd9-b9d1-266d75f670cf.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 0x5527378dece8746c68e9e6d9746bd7b165fd076872bdfeb345ca3d1c88bb8f5a. 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/GXF972444783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ed6435012954c6267c4b95448999b79fb1821f8081e489554465fd644948b3. 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/GXF972473052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4ed8b810ed78f27f7c1a278dd09e610ced9fa52f65dfdaa02f2bd7aba3c821. 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/GXF972471079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcb46556ccc1a45c902b4f750a70b009601b094b62e9c4ea868534c72fd61be. 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/GXF972471476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77777919f5d29ad5e2fd76705cb42fb2cf85c70f7c2a1ad66ac647a347fa970. 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/GXF972425766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4944cf5f90566fe3b9ddcaa4c62d5b05d64bb6e07cca7efdcadda468129d3b. 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/GXF972451278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a73d0fefd94feb4c99876fd22ef92c318423fb02949408d4f743007533555a. 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/GXF972440050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef3281acf377853944e81d761c791f6c822f510215585f40acc5358836d5e02. 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/GXF972414575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa915692c2fa73920bdca1bfd163f5639ceead24f5b92a6a153f3a5bd2ef7e3f1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GXF972408635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba183e9e3de8172d99a2db953740fab6022e19457a3677b9426857dfaba503b. 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/GXF972405159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b5e6dbc69ce1f79320c96d635cb0a2aa24b3968d03be996c729b400fece22d. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GXF972456283.
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 0x6ec852ab11b238bf9f73e07177769868fbcbef3425ca7e06b5dd5b45d7b4099b. 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/GXF972494433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94765bf857d3b4649b7b6b48c80620d573fcb39d85c44d6d8fdeb9fee82f974. 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/GBSMU3697418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc0d6f70ab493c9c4c4d187a2616540624a354bbd2f97047000b3bb9b29cbac. 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/GBSMU3697419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96006a5e61128416a5ff1dbe44c7f600f5cc4e652f99c8eae9bb5e27708ec3d0. 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/GBSMU3697421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b686f6f05cb1df0e115e8f476d6c57dfc9be347c3452fa833efa8c7a47d756. 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/GBSMU3697422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0af4c014a0f77827017344fc041ed51ffa7389a9acad52ee2563d5e8a67d76. 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/GBSMU3697423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490cff4fe897724d2859ef54866a66551b3a90d0b4eb127bf6100969e924a117. 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/GBSMU3697424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd8333dfba7e1baae0e10dc81af12ac30a0a9e9672fa3fa35a683aea773381b. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBSMU3697420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2560ea6a9436fcf3a8977458fb745ae9315f80f31dd45df0253d86cf02898636. 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/GBSMU3080985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8e2e4f0cf62dd41c88882ac3c341f1a2d2a3b88fa7cf7015586223f81656ab. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBSMU3080988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad491877e188f3b4db95e4803f7a70dffe60d5be3f8a18545bdb4768c65edcba. 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/GBSMU3080989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb40a544b1f51e9673fbaf3c551484be15db8dd5edfcfa7a73e7033176cf05fb. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GBSMU3080987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7069733440cdb7740f0ecdd8d580c346939cd1d44812026b7a091bed56149a17. 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/GX89G2506232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b00a38d61e669a8218728d8c8a7950742c1aa2a5e8ab5e283aeaa88874cff5. 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/GX89G2563846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d06f1357bf757b1ac7c1d70a63cc70a60948bfdf33191535289fd8641fe1f5e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:07:54Z), 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/GX89G2595986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf8948b3363cb045ffb6fffbf0ab92052996b4886fe62d0928249af987d4161. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GX89G2500320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977db3e9bfc42b61dec89a9712a2fff807782ced0070a28f4bb73abf49bfc140. 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/GX38U2478202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b47b73a12c4d668bbc06e9d31df56c08bd6e4d325d759cc705555c9a92ddca. 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/GXF972436981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3402cfa588aa5330923f606e6b801ee66f95fea76b19e4de8a4c72a40f72347. 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/GXF972432643.