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 0xab809d478cd1db8f1a63cfc28983bb2f7224d24280537f1b2a3cba70f5125271. 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/85a7c835-2d27-4d74-85de-18ba54819e29.json and https://artists.proofprofile.net/proofs/artist/85a7c835-2d27-4d74-85de-18ba54819e29.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 0x438af022ea6943a924806262d3d44034f4a2bbe346654d7a1a784b4c10aa6a4b. 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/GB2LD2110124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bbd96bb8d0aed1bcb61cd725db0105b981d0c3a9dc7c998bcbcb48bc727035. 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/EEDD12000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a383cc671539a489e650ddfba2f7250f16bfd1939bb4a6f946b6772861d7270. 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/NLZ541900923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc18a9769cd6624c503cd405faad709b0f76e9045f7fcd539ae8450a3685a43. 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/GB2LD1800430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc220766975303005bd4218668151d5be1dca78017862313207c09d43266e69. 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/GB2LD1700317.
Amsterdam Dance Event 2019 - presented by Spinnin' Records
Post Malone (feat. RANI) - Joe Stone Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c46f318cfe0baea1607a15994fa826f2f35ccb52bb4dd0ba37201129f819f5. 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/NLZ541901234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fa0c67829713c840f9f203e103fd1c5e4b44848c11dee186c5327e51a0ce96. 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/CYA111900294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616d0478f7811503a6763dcba8d07ee1840e11ca71066d3a1b0f9467fd5cd950. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLZ541901221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3140d9d0d8ac7189fea5135dee3f73b5c46ee4477f703315bd4d16680cb157. 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/CYA111900224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664fe63bbfad4aa5ed9c3341208c51c9b4c2102d4c27797f4e53da0d84295af2. 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/NLZ541901323.
Dance Hits Spring 2020 (Presented by Spinnin' Records)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6e38f32c5bf94558469476e4de251cd06b0011b5c5154d6cbb788192dfa226. 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/NLZ541902005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dceee2d849c3c9f9fd79a9496331f784f32a6dba365f8aad00d6583c617aede. 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/NLZ541902054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc069ec0ecc40ceca8bbb3c86ae532a4fcbe31ccf9431317ce8a5db191e467d. 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/NLZ541901329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b80c1db78ca772ceda90a7df32b63a3f08f0e752db4fb554c465999c1d4565. 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/NLZ542000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5742716cec4d2eb8828bdfe8146908af196b8e441c52c06481bff5fa2b642b79. 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/NLZ541900698.
Escape (Into The Sunset) [feat. Una] - Radio Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75efd8cb034333c577cf986cf939d1141b8bc067a4c4d1c120d238bea9abb0d3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLZ541401156.