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 0x9899c619404415b57e4416a0aeb5b856ce4a5b04676c0bd0811cb056d86c43b2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58612ead-0d96-482e-8f65-bc3862215709.json and https://artists.proofprofile.net/proofs/artist/58612ead-0d96-482e-8f65-bc3862215709.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 0xfc66302e65e783d160ce9120a54018d43b7ca213d6c24a4f4cfd310ecd7c5594. 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/TCAAR1068148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33157e0bd8c73c3581900a18bd9194e5a89488a8ec03b5e35b9932cfee176521. 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/TCAAR1068170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86aff910cf63401a756a5035a652ac98da9b3238bd6ad6c599b427ab5444580f. 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/USQX92401425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde55695e3872593cd170fe65aa23636eb671574b364c0f5fe5b41ee165d6a2f. 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/USQX92401426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe1afd16540850ebb1565771b0dee87ad3a9834130fb26af7fa96cfb012593f. 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/USQX92401427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa2d1cf909c14ca9195eec0eeb8051906fb0244334e4292da16c00febb904df. 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/USQX92401428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cb2ea55b5e8ed70501b7f1f0b85faa405b5aef912b7d4a2e7cb1e48a91e940. 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/USQX92401429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71718b486d5093ff9eda8c66354d10e22af1ffc330f2c687cba17f14d6cb9d07. 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/USQX92401430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6b2d126376c3c89d80f366942b25f6fbc57fda3c61a6586b0e70072477553b. 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/USQX92401431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcd3edcb73af662f3de8207006e68835a34f94612375d9ba224ccd70ba59f7f. 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/USQX92401432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf16e4ffcba7c66ec1915ff5bb5ba654ebfd689b97e99cc011d5ec62e9d47ddb. 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/USQX92401433.
Before the Flood (Music from the Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5ae6eb0ae141c0e46535aabb02ae7ad80c07dc1e2aeb2b7f80884286c5a762. 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/USLS51692201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75cffdecbaad418410a09715144dd1938819d6866dc293409ea3060991a3187. 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/USLS51692202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bc24e1de7b6296780817763244371d882c796fc597a97f7572f1c7940d9828. 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/USLS51692203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde6831544a2e2632c8d56fa635dfdbf224a42fae2402658c1c409b91cf64bbc. 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/USLS51692206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b4fb36f9e9732b915b59adcc2d1a9eecddcf5a02ff5acb49b4ae6af2556ce9. 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/USLS51692208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54b8a9c63e544feb0df172f700432c47cd814ecaab184969d29283e27d993ca. 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/USLS51692211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d0618ea01d44067777c8a434e25570ff0da96d7cbbd5781ea1fc0fe4c63d64. 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/USLS51692212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9cd05b3cb18b326ec5d267db7891a9dcfbdac8413e3421c2ece9e296548498. 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/USLS51692213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f473b65698cde7d5673c0a143499faa904e7c2553e46d1ca45efea0f97125f1. 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/USLS51692215.