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 0xec252f54fe12eaf3a4e855c3b3b250264e51c8af4b8bd01b895d8ee6a8bc0a97. 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/0a319a9a-6597-4e53-a7f6-d9ed92d41655.json and https://artists.proofprofile.net/proofs/artist/0a319a9a-6597-4e53-a7f6-d9ed92d41655.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 0xbdd839817fc74787f7d2f270448b438e720c4090f22772cd2700846d1ca00fb9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GXD7G2577998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e36d304ae307e03824ff388923c40dbf8509121ad1b302895be2dbc8c45bc5. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GXD7G2555893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc56c491cf612539590b2c7d1269f2e1e6a4b43a08ccdace2089d237d25afcf. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/GXD7G2538225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ce0cf45419f40e4a731f2a0fd6774e4304cc02febdcfba5b0f0fcebcffb7b9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:02:21Z), 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/GXD7G2542551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdded6e3f458cfa69c78b60a990546b84a10393e9766c2af0526322a00a8442. 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/GXD7G2596452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0260997bbd224645f870a18a749db4d23223bdba0150e1f9c2bff3a4f74c2dce. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/GXD7G2525135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5914ad9b3081e0a5396976a0978af873720346fd53da6b7bb890755381b78e84. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GXD7G2528392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2256af01bd32183708ef9042e5341358b569e01977407d76f144f73e9f71f039. 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/GXD7G2563630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d55566e50db3e4993169b3c3474964c2659cbd97b942194d7e170331453a4d0. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/GXD7G2531098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52bffd0f20efd60a68a564a2554d74ace0b8ad25bbbe59af74e369cc1b0685a. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GXD7G2592625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da969a32ca5ed1975ab1e54cf701c3129a3fec01254fae4e1678d2c5b491715. 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/GXD7G2507358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8685f38faa0e93c49da66dc755d2342f81d96ce18d21361893c16804a464e05b. 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/GXD7G2555478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e357abbcf98d700350af4908ae66af2f9d7694e485314d1c53248f4d7154ce. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/GXD7G2572057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c29df20786c807bbd470b21c978343e721c68448969b0d322af35e50b4564b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GXD7G2598454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56473b070260cb164e3982aca00d7bdc542fc8c7560f179469baf867452a0313. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/GXD7G2548721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb90fe817eff6f6b5288897eaeac32046a90f3980344f6f5e56423ac7ed7317f. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT5M42562852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2c3287ab1780a840d8f6716b892393f87843b2e648928638ce07ab2811b977. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT5M42535018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a91d6e54140d183df2ed8dc45f5b3afd5c94d1cf68e5261766df2fc4b3a4744. 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/QT5M42559900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe465e3f7b1915884be01a2d3c3c9296f5052bc5368c58acbfdf2d8461a69b48c. 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/QT5M42580663.