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 0xac287f7330376756528b730ca9cee6039caf996943d48484d7b50fe7802af641. 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/ed8899b0-9997-4cc3-a0be-a62b5b30e118.json and https://artists.proofprofile.net/proofs/artist/ed8899b0-9997-4cc3-a0be-a62b5b30e118.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 0x0851aa18bfa672158539651e34840661c13d733b4174c7e50a79bc57d67ccf4a. 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/CAN112300837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b27981a9be98e0fc1bb8e34a64e01b5a7752382d6c931c1ef8a7a0b0aac620b. 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/CAN112400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0e40ed951772892d1f36a3ff457dbe988b87bc5cfa21fedcc76eff57a4346c. 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/CAN112400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c01aef4b07aceffd5d16b9ecb131c5fedca3adda6fe2f6c38c072ee06b6ed38. 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/CAN112302211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d8de406489acefd5e0837b0ac8572bb066053d03672d86dc4afc1e4344c9a3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZFYW2025188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b10b92db37c7be070d3dfd1172caed0e41c8839e80bf345f4a542b68fdcb98. 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/CAN112301664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d80c82bbdd7714e953dd2fd2e9aa01b2c69496b84142feb8e9168af4784fe51. 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/CAN112301389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d80c82bbdd7714e953dd2fd2e9aa01b2c69496b84142feb8e9168af4784fe51. 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/CAN112301389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdbe7db92539ab3f6252b01e260ae09743f99c0f0524b2ce9e6798828d3ca07. 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/CAN112300552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbced4928e44a71b89c1c2950b9ec743fab1c0cbf3685d9e6081a5ea0d24391. 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/CAN112300343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa51d3bca39c8ac039c05fb7edef7df68206c3f14eeb43803b865a39f089b33f. 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/QZNWS2113987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0851aa18bfa672158539651e34840661c13d733b4174c7e50a79bc57d67ccf4a. 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/CAN112300837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdbe7db92539ab3f6252b01e260ae09743f99c0f0524b2ce9e6798828d3ca07. 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/CAN112300552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbced4928e44a71b89c1c2950b9ec743fab1c0cbf3685d9e6081a5ea0d24391. 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/CAN112300343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa51d3bca39c8ac039c05fb7edef7df68206c3f14eeb43803b865a39f089b33f. 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/QZNWS2113987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d8de406489acefd5e0837b0ac8572bb066053d03672d86dc4afc1e4344c9a3. 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/QZFYW2025188.
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