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 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 0x96d0a7e6ea686b2eaf57019de6a85dfcacbc1aaa7c77e12581e61faa72a89364. 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/8bf77823-a80b-46dc-8a13-f76c7dbd5b97.json and https://artists.proofprofile.net/proofs/artist/8bf77823-a80b-46dc-8a13-f76c7dbd5b97.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 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 0x6f705624e97eff3d24dde5ff27cc3b1ea446abc90f87a0b421520b52bb1cb4ec. 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/ITYEB2100209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80284448664a979789933045f27a86ea2a35566d34f27e22545b6ad0bdffb6c7. 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/UKFR82300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108e6d2af7262ab67cebd0aeb9c22df122a916ab1ca8b9a3f5a6254c0ceba234. 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/UKFR82300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dce0c1b940645e9e4176bd73762291c1ca621a29eb60fddece9e6054f2e2c45. 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/UKFR82300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0310ef56c0a6ba322ac1307edcd3ed0fa63de7a9b64dc9b2c0112ee2b3aa1e8. 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/ITYEB2000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f705624e97eff3d24dde5ff27cc3b1ea446abc90f87a0b421520b52bb1cb4ec. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/ITYEB2100209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0310ef56c0a6ba322ac1307edcd3ed0fa63de7a9b64dc9b2c0112ee2b3aa1e8. 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/ITYEB2000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ddd97e3b12246fa0d86e964ab42f154b636aea14ae53cd6c4215305acedb0e. 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/ITYEB2100235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f797bac44695cdd31b001b9e3b8f61eb1295c263c6a2d086d6ec57d5c7e15e. 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/ITYEB2200274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de8435b7216c08aa1575a219e08f2b6d9bb402c92e8931e00688620931e4acf. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/ITYEB2200275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3bfed021e3f8b591e4a4b969298a8524046f2051aae70c6cd14240013dfb09. 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/ITYEB2200277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ddd97e3b12246fa0d86e964ab42f154b636aea14ae53cd6c4215305acedb0e. 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/ITYEB2100235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadcb5ce67e4e12f6de73535d601c214d706cdafa5b9c83c98c37d883d00e442. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ITYEB2100233.
House Music 2025 : The Best House Music - Dance Hits - House Hits - Ibiza Party - Party House - Club Music by Hoop Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7f211d3f14196b472957102213454557f77a9a606dd49376a258fd6bf8630f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/ITH641609643.
Gym Music 2023: The Best Music for Your Training by Hoop Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7f211d3f14196b472957102213454557f77a9a606dd49376a258fd6bf8630f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ITH641609643.
Dance Hits 2025: The Best Dance and Pop Hits to Feel Good by Hoop Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7f211d3f14196b472957102213454557f77a9a606dd49376a258fd6bf8630f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITH641609643.
Tiktok Music 2025: The Best Tiktok Music - Tiktok Hit - Social Music - Viral Hit by Hoop Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7f211d3f14196b472957102213454557f77a9a606dd49376a258fd6bf8630f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ITH641609643.