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 0xec6b269d8ca62a70d94a290eb4d25e235e69792e5771a86104572224447a53b7. 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/b1c3e7ac-741e-486d-8b40-10b97a7bcaea.json and https://artists.proofprofile.net/proofs/artist/b1c3e7ac-741e-486d-8b40-10b97a7bcaea.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 0xded25934ef989ee22b319df649791bf85ee2d1eccfb9a1c4ce3967e488669b85. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/GBMA22452499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4c596a64a59adb0531f90004c77d6af770f077aa1029063a60e8c485dcf48e. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/GBMA22452500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae0d25eda0ac2732109c599845406a8ce463f4b525c43f015ab810101a71116. 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/GBMA22452501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7501d0c3a8654c2a0de7a9af17c3bd82ab4c69c02864dffd0f17b80a4fe1886. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/GBMA22452502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff9f2087bb25418f5c9e1a30b9c3ea4db0b4a3b9661f5bdc8b39887b611ff7c. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GBMA22452504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034a731545e40e410783404a8e7667cb231393e7f4cea466ed2033f241f332fb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBMA22452505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94c87134e92359dd2b4cdae8efa07a837827ca5a2ec663e99c89acb479233c9. 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/GBMA22452507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405588c922e2d89faf8f7f2b4ad0afbe1107b7a15ec046d03be489e1ee6be9e0. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:54:48Z), 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/GBMA22452508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9cecee583897912b3081eab3eea58c2eae0e24b41fd493ccee437b66e31272. 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/GBMA22452509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eed9700df85a3adad4d013688b74595c3604650415f66fe0cb91babd26c1861. 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/GBMA22452510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5d6f2d2fa1d5ae7e3624726d47aa257583217dcdb2be7900b70e1748eb8582. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBMA22452511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f912613979280549e1f170ba2122bd9d250004583cb0424b2dd3c9bbefe34a3. 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/GBMA22452512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3687efd72cdad513b5f49d62a43a75ab7050f3e0b099f2631c93d79bfde3b694. 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/GBMA22452513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66dcc1ac86ca572abe34f823a12ee0000a7d76d3f9c77c1ef31d160a745a28f6. 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/GBMA22452514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e71ba1be27d2f4c3bc33d7536213f81aad3f0e35cbd0cc03d65822294d0d553. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GBMA22452515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5dadecdf883a130632665c03a58cc7e57a40ac272bc99eb35e9bcc64d205349. 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/GBMA22452516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690f8c665375409d207864f1eda7d5ab6611697547b71e5f2faf6a407f1d02dc. 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/GBMA22452517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9421b3432aa811cadc02c13da7b777c95fa27529e81af3b2445ccf4c630373ee. 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/GBMA22452518.
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