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 0xdf34c2b839acc6f44ae45aab4e866e174215a756ab06a44c21e8182a06c6b3a5. 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/358230bd-9008-4795-94f3-050bc450f25f.json and https://artists.proofprofile.net/proofs/artist/358230bd-9008-4795-94f3-050bc450f25f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Legend of Vox Machina: Season 2 (Music from the Original Series on Prime Video)
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 0x080a3a248f40b5f6a198b2289f594b0732068c608800f6749a65ae556b58a9ea. 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/USLS52336801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe43fc6f1117728f501cd87403fb8a3ffc3a661c2713bf236f8be00014093a78. 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/USLS52336806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc23c03f412ed0be100540d7cf906f0dff847503feac7f45cd6d88385c614ed. 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/USLS52336811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf637e8f32ea2697dac8487da7d6e7ddcc257e5b7f8c576e2ff6d70b18ea49eff. 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/USLS52336819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694caea568c72a760fdd00d97f962806c8bc44e9a13ed1c48f6cfba4f8b8c60b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLS52336820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716dec5c407fab64d5e0a8d977afdc9846c628ca86a8c796e90178c6888eaccd. 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/USLS52336824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d70baf2f72f5c8fa12622b71da4c9923701daf942684cca822b2a0cf6de91d. 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/USLS52336827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306b52f0906facc9b0e6258b562547ab681a1320c2b087f5338855184b262bf5. 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/USLS52336835.
The Legend of Vox Machina (Amazon Original Series Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0222f293b484855b2d0bc61c1ae9bd859bb06b49c08585f6be37a9202e9d909. 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/USLS52217006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02951c64ed61c2aaa4f7e993b276dd53b03bb614ed5269e1ec5a276117f2b0ba. 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/USLS52217018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536df53e1dafed81feed9dcd4fbe994842dc87c8163a3dec46333175cdc15ab1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLS52217022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71508839911e0453bcc9e5df0136fcc510ad7d36286b359401f04b7407f6377. 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/USLS52217026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc272781429828e285eb8f0db20f3b035610317165b96b73216dc19a0654271bb. 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/USLS52217035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6aea6e2295a9defcb845600150e3d1bdfd9899d4dfc280e1a5c5f3e0a0134a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLS52217038.