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 0x635a093aa350e5a31c71a52ec47744a19cb7e4f5fdca89c08179705eaf95b302. 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/e2b4a798-b71b-46f4-9394-25e23a030c08.json and https://artists.proofprofile.net/proofs/artist/e2b4a798-b71b-46f4-9394-25e23a030c08.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 0xfbcb9514d7ba146cc8c8398d9290f1b4655f1e0eba8b18e972cc204303e95026. 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/USTCE1040838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a0192d85b4f439231de76f35d33d532ffb0faa07deface9b23d07e60280ca2. 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/TCAAW1158249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3c791560ad9330922f11220ea25539b11c957819a5fa003b2dce3400c745fe. 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/QMQQQ1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728ffab20c59253806efc42f74627601b0e537125e7769ca24270d869a4f2da5. 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/QMQQQ2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc42c85bc47b7a1ef00d4d8bef2ec53c70e1db2cac403c3052e96329b8d497d2. 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/QMQQQ2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bf37777592ea3e6e209d404596978a030d850f0c73be529320ca9be1fd8900. 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/QMQQQ2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf552a65aea24462bbf9a1d5659121a578150e2e65f6ed73c794f5324a85a98. 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/QMQQQ2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627544cbca6bbe5db698986896a8eb0153a2afdb477e86e28351fa3e92186e9c. 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/QMQQQ2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3265dd5f5ee793877391fb9d562351fdae0feec6546f568e1b74e9eb2d20040f. 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/QMQQQ2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97667bd614469f036cc598b7c7fd080640cbf7d5a011946e5809899476254896. 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/QMQQQ2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda065e519d905a2b8852815692617ce73dab3132756523366634753c7705efc1. 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/QZPYH2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99700579930bc37147c5598943a77f356fcf0376850d74ef5c1f8f1e8afd6be5. 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/QZPYH2100005.
This Christmas (I’ll Be Missing the Missis)
This Christmas (I’ll Be Missing The Missis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2abbcadbd3ea629d46956bde5bbe332a3e74cb497ffcca5b095fd18b0488ca6. 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/QMWYT2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0870f20023bc0a34b1a25c6fe7f6f610a5b731555681ac99826f6d117b2e1e01. 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/QZDA82293964.