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 0x3ca757e17a83cbc044b897b672c97148dbbf2c219e2a646f1d0a8fc6759b5b99. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4d52735-4f63-4193-a5e3-47a51c76e9cd.json and https://artists.proofprofile.net/proofs/artist/c4d52735-4f63-4193-a5e3-47a51c76e9cd.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 0xec08c96832714dc1123d1ae2834b7c4f617cbd8f358decd75da5bb1435ea1ac4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/THS081100399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c3c06bc9b284b8c281aea75a765a58f648a556e563cf1bfc08b4c8c4ad0148. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/THS081100400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d6550f4cfba20f2283fda99727830420fdefaf65ead8860012e6d00c74191a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/THS081100403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8799f08ef6dc4d9c1dc72e22c28f36e1a470815637559300dae22a5a467889. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/THBEC0000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c2ae615d4c94027454da77bef3625a20a2e7fd8cdf0518f5d051d793202861. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:17:56Z), 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/THBEC0000192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154b5464dfd31f3fb1a3921fc1895c03fd933a6a85b9ab634e8630962aa16f63. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/THBEC0000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3917757f40a8c21b548e18f5293f0c79e4c7d229cfb1045fd1f503d4391b3e. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/THBEC0000541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5568feca8d124a09c66339cef4dae45d4685f1f00607ed80a686e9a93095edf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/THBEC0000598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3917757f40a8c21b548e18f5293f0c79e4c7d229cfb1045fd1f503d4391b3e. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:44:13Z), 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/THBEC0000541.
ร้องไห้จนไม่มีน้ำตา
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864be2c8935c47919b40b8780e935972ca2b8fc350664f6622877c79f912da91. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:04:55Z), 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/THBEC0000587.
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