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 0xd136e5578aed74ef91a5d804f3a21c21023b8ea5e9c17b7f336f9e0eb9979812. 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/01ad1a89-daeb-4a00-ab6f-db9630cc54f6.json and https://artists.proofprofile.net/proofs/artist/01ad1a89-daeb-4a00-ab6f-db9630cc54f6.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 0x3806d31286bccfd3fed127107d78046532c75f27deb8b339449e2749840a6c3b. 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/DEN962201241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb33062b4a8528b2b4c306f6cb1da5840526bdd75208c10e0bbdd98fc335ae09. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEN962201242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ef8218241240db4995ae7d4e880f931d0fa963f5827bc6f411d08a65c51218. 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/DEN962201243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae86a0b8c52f9834c4bbb74c353b791de0505389c620706366dc6fde090410a1. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEN962201244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b8380781576d9fef1da7ea53107a9fb4dead2661cea1ff1962d18c991db8fa. 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/DEN962201245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c5ea0701b1befe5c8a633c5d11b3a77f2e8587f781e114e8684a93c169e022. 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/DEN962201246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8d75c3acf26de0cca3a57276199adab7347aed0076b01d1c7a2583f451f506. 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/DEN962201251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02e4526cd405bfffa1e768e008be013d3f60a78f748e603ab89a551b47c879b. 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/DEN962201252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa564a5b950e26fbe7a5a98222b894c4178afab35e79e87daf8dc471aaa47c0. 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/DEN962201253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0780ff00e527aa7ea6a39484f13b31be99d0e6d890c64122af03ec2affaf49. 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/GBF071504180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0780ff00e527aa7ea6a39484f13b31be99d0e6d890c64122af03ec2affaf49. 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/GBF071504180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3806d31286bccfd3fed127107d78046532c75f27deb8b339449e2749840a6c3b. 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/DEN962201241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb33062b4a8528b2b4c306f6cb1da5840526bdd75208c10e0bbdd98fc335ae09. 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/DEN962201242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ef8218241240db4995ae7d4e880f931d0fa963f5827bc6f411d08a65c51218. 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/DEN962201243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae86a0b8c52f9834c4bbb74c353b791de0505389c620706366dc6fde090410a1. 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/DEN962201244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b8380781576d9fef1da7ea53107a9fb4dead2661cea1ff1962d18c991db8fa. 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/DEN962201245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c5ea0701b1befe5c8a633c5d11b3a77f2e8587f781e114e8684a93c169e022. 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/DEN962201246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb33062b4a8528b2b4c306f6cb1da5840526bdd75208c10e0bbdd98fc335ae09. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEN962201242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ef8218241240db4995ae7d4e880f931d0fa963f5827bc6f411d08a65c51218. 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/DEN962201243.