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 0xeab470e91c35e1e8ccd5634c94111dc1daa5781c85d484ee8eb3ec8cd492070b. 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/7e5c50d5-3ae9-490d-bfd9-d9d1bb622c1f.json and https://artists.proofprofile.net/proofs/artist/7e5c50d5-3ae9-490d-bfd9-d9d1bb622c1f.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 0xf77ce552c36063d890481940c93e0f4d2f85d7b1ef751bb272960445157dd029. 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/DKNG12200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98db447dbe289070f5a06630bb81716b17fc8172b3889485c84c105f362a887. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DKNG12200203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d67a38654fa3427f7fea42902b6037cf356920e998cdc8092a81d05e432fecb. 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/DKNG12200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656a969bff624285eac9a6a807776525818635a89d907a9bae1251e0de133124. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKNG12200208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98db447dbe289070f5a06630bb81716b17fc8172b3889485c84c105f362a887. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKNG12200203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77ce552c36063d890481940c93e0f4d2f85d7b1ef751bb272960445157dd029. 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/DKNG12200202.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9003b8e3b6fdb5cfafa451164a79be8db27e1a3dac05c958648310a3e65617b. 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/DKNG12000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f2f45f4bec0298e4513735b9bf46cb99ed4b3f78b7bfda5297c7c675434599. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKBHC9700401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4951dbbcddd3d464d54e51c46a81238f2086a2473110041e93700743a8249758. 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/DKBHC9700402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb817845df818e9b223cc988068c4fce89ec4581f68fb71585d9c3fae67fa7985. 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/DKBHC9700403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f9b2277bb7272fe6bdcb368a803f6aa6e1e58b25070aa284e36ef0a88c5c89. 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/DKBHC9700404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c56cc4cce6fcf142e07b647df40c0a316b2a4b544426332ba75e7618834467. 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/DKBHC9700405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7706b9550a502989d8b11eb44a5bf273300040491209a88164961bbb8356a69. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKBHC9700406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668b09dc4b84af509c1404388e6252cb1fbc9a8dd5c29ef836d0ed0a735d3ee3. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DKBHC9700408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bda9d732735f8a58679ffdb9f62d256e5ad0d409ff21b70b3256e494d83244. 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/DKBHC9700409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2fdbf7c1cfd1e7e2337786ee8b1f374c22be38b7a8f74f1f4c036f26d67c47. 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/DKBHC9700410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c27cebd0fa8929b242c3c9d223cbd57caa086cce222817c84efa087319503b. 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/GBJSH0722304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7645963e276dd058cf78a196776a4dbf8116307f8b62faede2170a9dc10b7ddb. 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/DKNG12500307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08430cbd0a7621a9d40aaca3a32bde12540d2e4bb0750b2f4d79bfde1c99301b. 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/DKNG12500201.