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 0x7d5b09931167f5429f8ebba02d96a6ce651357e9f821849ad2d44c8d493e19a7. 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/39b7a8f2-32b6-4833-84bc-87ec915c6bed.json and https://artists.proofprofile.net/proofs/artist/39b7a8f2-32b6-4833-84bc-87ec915c6bed.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 0xee32d2b806786508fc092c0d3ac3a3e87b8b3455a7cf348adafd9ef3f6913745. 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/QMFME2046065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4641bc3b778513fa19b136f6402d65390ddb609279284cff08665e73ebdd3469. 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/BE8LH2200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdbd66be16fcf8c26c0a3e5af6e7e0ded1f1963632498ebe1d326a93ad1a7d6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BE8LH2200104.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdbd66be16fcf8c26c0a3e5af6e7e0ded1f1963632498ebe1d326a93ad1a7d6. 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/BE8LH2200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4641bc3b778513fa19b136f6402d65390ddb609279284cff08665e73ebdd3469. 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/BE8LH2200121.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64455ee83c3258ee78c0cbf3cbe3ab074249eb7910ecff68dde6b0c36068ce15. 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/BE8LH2200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2220643f4fb8d724e85a371f39af03344bad3709f1a101a9a6a4a724488a13. 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/BE8LH2200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab7426496a380c134ff5e03669cc19917d909e355438d97fcd02bfae3e08b88. 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/BE8LH2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f63d334c07d9f42ca2614fe92dfb8c8a93236c485b0a76ff6ef41318040561c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BE8LH2200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1399bb8a71ca9ddf5887e4d3fad4608d3191f14fb35d935aae82b95b238441. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BE8LH2200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4641bc3b778513fa19b136f6402d65390ddb609279284cff08665e73ebdd3469. 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/BE8LH2200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdbd66be16fcf8c26c0a3e5af6e7e0ded1f1963632498ebe1d326a93ad1a7d6. 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/BE8LH2200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243e1caa3f73a95b9a4e6756f7baa9e4f4bd87f5594a5377e7849daa5c9e9faf. 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/BE8LH2200141.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1399bb8a71ca9ddf5887e4d3fad4608d3191f14fb35d935aae82b95b238441. 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/BE8LH2200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64455ee83c3258ee78c0cbf3cbe3ab074249eb7910ecff68dde6b0c36068ce15. 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/BE8LH2200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab7426496a380c134ff5e03669cc19917d909e355438d97fcd02bfae3e08b88. 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/BE8LH2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243e1caa3f73a95b9a4e6756f7baa9e4f4bd87f5594a5377e7849daa5c9e9faf. 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/BE8LH2200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdbd66be16fcf8c26c0a3e5af6e7e0ded1f1963632498ebe1d326a93ad1a7d6. 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/BE8LH2200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f63d334c07d9f42ca2614fe92dfb8c8a93236c485b0a76ff6ef41318040561c. 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/BE8LH2200123.