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 0x450e6d7b25813691a54a42b8687a3d9887b0ea87c3228b231b95faed6286a2f6. 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/cf477e26-d561-42c6-b755-ddfdc1dcb548.json and https://artists.proofprofile.net/proofs/artist/cf477e26-d561-42c6-b755-ddfdc1dcb548.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 0xd91cea85f8beee8de57ee8a917bb959100161d3e6e592f27f43482ded3e8dfb9. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCAHL2367595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25a2c5d1637bde0a71f17989ba16e2bba18c428fb6aad9d28bb1ab9b1242b32. 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/TCAHM2337396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8440cf5ef9c635b5284101a4d6bf29f8ce235210bd221dc7ce22d330f75eb211. 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/TCAHM2337397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc03dbe069abdb974b5928f3c3195380ded58504bbb64b5afa3842c09f79cb5b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAHM2337401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c00607cc3c664c43c7773f5ea541d3bfe47633e08a885ba27c608cb6fa1d4ee. 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/TCAHM2337402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73f7e8bcc7a1524f47850be76056027ebd1236be7714aa7ed084002fcbb7d7c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAHM2337404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db314dfc6e83cecd68aa0ac2310073fa05ab6cb49c19f5581f80c21c77ce417. 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/TCAHM2337407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb887b8d34a62c5f0fc65f3e007a9f1f52026ae45935d607d655f0344cdbae121. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCAHU2432826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4697dd913e7b395ceb0d2dbff43f460ee79d30210463dffb943f9bb6618248a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAHU2481199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32c5faf5417c322c75cf6b55264cd6a66e1d43499b9550013e70a5c44cad49d. 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/TCAHU2481202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3186deb9ebed94a09862a7e48d0e57340829854aadb9d08bf5a6385111a3947. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:44:43Z), 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/TCAHU2481203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f323ae369a07b7f188f4dfaeae2f028b6981e58ad23e132c7db89601fa2d5a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:06:31Z), 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/TCAHU2481215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00dbaed9622218fdbd44cf638440627364eca1b21a5618b523a7b7280c8a4e5. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAHX2436790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8296ae57eec46f9e89502e4f560e037962b9c3a1085032d6829fe216ad36192. 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/TCAHX2436794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf83622debe8b032a946bf6bb42e8d8243304dcfb503b4bcb423cbb2545baaf. 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/TCAHX2436795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a24e7e0349d4306461ac593d63c8628a8b9d8f9f61169d4c3e745ef25fc9935. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAHX2436798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ed4778e8cfc1ab929e6ad2d12f7c71483b2aecbe9629c1a09e6cb8570c1e23. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:14:57Z), 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/TCAHX2436800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6a550532d713dbda2d874b71b4a05f014bf940e6ae7f9829597bc48b811e54. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCAHY2478231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbc8f73339d821f8af24f967459627f0f385a96a9a63fcdf9c9656dfadec6d5. 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/TCAHY2478234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8e3e2b50e0adac1fb6d835ba1f893c7ff1cfedf8490c0b6e132bc8e5b61eac. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAHY2478236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e4193b8a5c68798105c850f58077782e5e4bc64103b19c31038202a16c27ce. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAHY2478245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ff507933f4373ff3406f47e589ba9ce843a985ef090cd6309ea2168435ff4a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAHY2478246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5821c2c11b3282b5b2a5f43ab53187e01ccf2435856ea0e4841caedff1e93606. 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/TCAIA2434903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd056c4eee324c637b2a76753a7bf25b30c6769afc02c024ee5f385476c851e2e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:07:14Z), 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/TCAIC2485207.