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 0xd11a25a02d05a8c24d1ce280b5391f328ecfd5213822a331315cb3cef0e3012d. 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/fb0d24d2-8e9b-4a6e-88e7-e53fc96cd41a.json and https://artists.proofprofile.net/proofs/artist/fb0d24d2-8e9b-4a6e-88e7-e53fc96cd41a.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 0xecd764bd83af02c44a00958eea24c12df8bca36ba5c125c57a866162b04548b4. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:58:54Z), 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/TCAIS2408226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440276551552d4e6a9b385133d8b274f67068eb4d80f36ced5ddb6cd52e3c6cd. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAIS2408232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e143a86a6877bc9d1a5aff93d8d3d4cbb800f5bf4189a4c9ca159d96e8700b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCAIR2408237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828439df670d1475d9382e92651e3afa682cb63cdc4ad5524c90cea9c72d0472. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:25:08Z), 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/TCAIR2408241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d20363cdf049c3f73081ec9c96a10301c1798a8d103362b68399044a473f1ff. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:04Z), 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/TCAIR2408245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757abb6d71c636bc9059e6276d70b0875d5be8840bb5d6b82edcce835a026fa0. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:14:56Z), 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/TCAIR2408249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49c0d1a7e4142d1e21f090f9ddf1876f52209e6926d560ea2078345c5650522. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAIR2408252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce05c8c2de688e95c1713c300f60ace45ff341c9a3011c133add215efbe7955c. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:58:28Z), 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/TCAIR2408255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fdd0a13450883c48552d131f63f74574d805920b7aa03b4e35c2a907f2a2d2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCAIS2408258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6839b28f4de037a7c99b9c68e69785972dba8d0dcf2821712db95281d7128b2e. 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/TCAIR2408265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85daa2d21b31d1883a1be97cc26153a814f29dfbb806f16f6dd480003b83cd9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAIR2408268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c57f0b3b6af31b88dd6661b0bc69f66be4807b45ea681dc706a19af50a80d55. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJK2512723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28495592d664cdd0a7af1d838c3a49627012afc3472be1394fc1e0aae7a016b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAJK2512731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6414484eb635f287e8b663b0f12f4aaf649514db411458ce900585ca7e59e38. 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/TCAJK2512739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0569acd49ec8becb551bb85fa969d095c9269c55d11e881c46dfb7a699609a39. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJK2512746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc870758612ef90f62d0c13cd545216a71452a50aa8536e60dceabab20d0fef4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJK2512755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27791e6f1e989b491334ff19ad5be1cf359de9a63b85a1d19ec998d39315b05a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCAJK2512764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac57d1cccd8be78d42819f820329a594cdf9a048218610643b021cfdacd3980a. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCAJL2512768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3b1b3c961be3c14cded47abc6722f5ca793a6e58c8db229f081f35833cee16. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:41:31Z), 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/TCAJK2512772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe332ee92fa109bbe378d3e3b1c6ec5e816ffee3ace3eb76b258cb6733c7c615a. 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/TCAJK2512776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f830393268b2542c3d8d8fa2a8747c1e8458ddc0f24dbea1b532f41f2c64112. 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/TCAJK2512782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289332287232e70da809aab50ede2212a1c77ba3a7ecb93576c5473eba1f0465. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJK2512784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6358ed00ede3b0c351137be16a50cf24b14cb9e1a406a3ea994394814dd8ef4a. 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/TCAJL2512787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21674b764b451e9b419800b8eca8382c5b418c44ba1793b5bcea11a5a56207eb. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAJK2512789.