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 0x0b0697fb60165101e0b4df8bf9a519c409b696fc3fb7a490df6426aab94bb4dc. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a28f2c59-7db7-440b-982d-2f0b93a8cff9.json and https://artists.proofprofile.net/proofs/artist/a28f2c59-7db7-440b-982d-2f0b93a8cff9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Teenager - DJ Sabrina The Teenage DJ Remix
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 0xa67fb260c544d0a05bd0cc4d9773740c0fa00a2b294f8a108881e71c009663fa. 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/GBCEL2200599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40032e717aa68ab70b5cb1834483d6d81b10b0ea2bc3e689cbc405b8beb908c7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:19:40Z), 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/GBCEL2200429.
Teenager - DJ Sabrina The Teenage DJ Remix Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65891b934e5d578c8b044bd102d9cb48982abf0b143e9c8114bf420e1dec6394. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBCEL2200615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2738ae88f93da05b86db86d47c0620bfac4a8f3fb53fd2bc23f8bc71d0dedf1d. 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/GBCEL2200428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb045a0ca6efbb1a68b6d68dbf797238d96f8bf7cea61b6b9020d9ce03ffebd0. 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/JPZ922310845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77680e7f06ec10869863c4a1ca93e75d5f2fd5c4d9fcbc00a2ac2307c663c050. 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/JPZ922310846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaa217bb9e5ad1239e057d0c0f6e13354ba3c08e631a01e1a68001d6f7e0711. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/JPZ922307548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc29f1f76de540b80f3ddd38a5ec612f5516f811576ddb34a32700bc90e74f5. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JPZ922310844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb41f1620ce87dfec71be5624228fb2be918a380c6aebf11788caca2d59fab6. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/JPZ922310847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc837dd1bdfe6e2c0ad589fec084e40e33677d383987fb1f0e2a0df4f354ce306. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPZ922310848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3108f69dec1abf764c0ea31dde14fde2b22e513d6e8235810036577772a01343. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/JPZ922310849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e685a983dd36e04c7913b91ca579979efb061470d332ab44772a0dfb1e2be8. 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/JPZ922114046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84860150547c33c8664928e46e264be1d8044c76bd3527b0a7d4a862eac1bac8. 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/JPZ922200481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198c100fe60330a50157f6c73d4c27bcb43a6e27817c9906b87234189d86ac3b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPZ922201614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2812347ed80aecd6125fd83f6cf0324d495f2f7d387c46432221cd7a217b05f6. 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/JPZ922201615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8244eb8a7bad6bd3c6fd8324d454e21007c85b0d5047f359f776d45f42952641. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPZ922201617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebaeb1723ffa3e7acdc158402703dadee4e69cecb5d35030ee5125d60d921b0. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPZ922201613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e39f450d6c368ee99f81e9bf8bfc8c74dc6e0b79f2db9e0fa27ad52660cf78. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/JPZ922201616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd4264c8a3e7d7fb496ee05f86bdd39b2bfe5e8e035a1fd7f9985962dda3756. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPZ922409428.