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 0x4e09a78f59ccf98b077fc639bfb516a7fbf9a65e114e1dc345a15f127c7dde9f. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de6effe3-8cba-4cd0-a8ad-7d377edbaa04.json and https://artists.proofprofile.net/proofs/artist/de6effe3-8cba-4cd0-a8ad-7d377edbaa04.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 0x869d6bff4d7daf95e351db5f9f516b219122dd5688bd85438f59748bb073b648. 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/FR2X41995381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7146e845c7716bd8a2d19443da6dcbeaa336444e95381a2d901c19f68e003ae. 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/FR2X41995383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa7c03664194be62f4cf237f9cd1c9f366482dd25166276041da868bb31e2e6. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/FR2X41995380.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5cd42f0b4cdfbeb136216f0aea5357adbf3a50bb6c6561910e8149fce07188. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FR2X41995382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d64067dfdad7fc7f53b005f964701f2e692e09a3f07993df7c0df57fd796151. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR9W11807281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e68e9f711448d20bb60ae1c917f1442eca1f14bdf51327e4a916058e84a603. 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/CH6542040833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e8c204f68e7ff00a78ac0a9e54d33aa76850a9726a9ecde6999e5a615a261b. 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/CH6542040828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459cc6b61665810eaad7ddf6590b5d44ac61c82c70862b1a3b92d8c5a9d0f2c4. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/CH6542040836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60406ef5d62a2129300beebaadceced477bae5af1816fca6b015827f11cc8d2. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/CH6542040830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2758c3af0c3542b8c0355e72c79d7bea739ac1d3ff5d6c5c99ec1bce157bd18. 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/CH6542340289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991af711d3836509cfb66109ffa2b56ab5d9359e74b506d5c2d5acfb777e9676. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/CH6542407566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc699f688eaf4afe4ba125c0821f7bf9db7f4e56ac81ba0993ea987d2a6a77166. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:53:05Z), 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/CH6542407567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6d3067ee24c0825fa2e37966d9b14b601134db558759566ea3541b49ac6af7. 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/FR9W12458068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f67055b92d23a9dd5d0d86f17943bbef88eb8895cb3f6033b0180aff15a384. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAJI2587309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f67055b92d23a9dd5d0d86f17943bbef88eb8895cb3f6033b0180aff15a384. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TCAJI2587309.
Run and Go Hide - Roots Zombie & Gary Clunk Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f5616fb555629b5c8e98f796babdfa60822b44a6e00699445fc06310053b09. 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/DGA072102636.