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 0x26f783511d1c0865c2d7a56f132082d30a25183ca0c47c0d2e2f7fec95b54331. 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/3ffe8886-3e3b-4dd1-85ec-e8831e6b01d0.json and https://artists.proofprofile.net/proofs/artist/3ffe8886-3e3b-4dd1-85ec-e8831e6b01d0.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 0xc3ffe0880830b7f712a1632f4ad802d939150706d004e17f437f1f291682953c. 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/DEY472378749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aedc36b24db2dc1b1a145a66ed850147d08b418e6534d753432a1597539d8bb. 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/DEY472378750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340367c37e9689fd12e5077d4375a44ef4fb6d991d79bf3a9c2502fe6486d614. 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/DEY472378751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae60bc51d237a8e09d83b5abc6ee67b3e729485720e4507c32225bd232f2ced. 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/DEY472378752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc65e9186feda5832626e6e5194177cda468224116e07f38e2657846e86c77c8. 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/DEY472378753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f63fdd6645ceeb44e6f3c6254fe9de61c542f77802a9b4ab3ba3a7b5ba47d5. 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/DEY472378754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7fdeeee0e6469e95de4d77e38274a2c1e14f3e80f7fddc142fad7a8e37e856. 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/DEY472378755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7fdeeee0e6469e95de4d77e38274a2c1e14f3e80f7fddc142fad7a8e37e856. 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/DEY472378755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff10e2412861ade57f8f1eaa5dc61b667c68af7cf1bb9a354dd553aaa8f5dea. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZA56E2306376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5df1e4dac1fdc97410d460dabc61996d14ca1a86822a6ffd1f0b6fa151e6780. 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/DEY472475082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13c33923ff04559cd3e8cc7f044a2a3882b572b573bb93ed7b243bd6edb550b. 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/DEY472373694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34073d7dad867cf7272ea2be5d7f05b896d9f67378a8787c9237b72cb5feccfa. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEY472373695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018cf0f1a943f31dec193072cb584939e94972eee30e6168d26fbf9dd75240de. 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/DEY472279516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe0aae52da5eb0d0d67554400be9ac8049df12e95dbc16127877fc89e70cab3. 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/DEY472279518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319d5e122e5c53c0d136d6930e039604020c93fd139780bb8279796d3d88df65. 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/DEY472279522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319d5e122e5c53c0d136d6930e039604020c93fd139780bb8279796d3d88df65. 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/DEY472279522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf149e771941d655feb8ec49c947f1bef5ebd7122096fedd0eed5c3379dc2ea81. 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/QZNWS2273496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76afc7218585955dfe1782205bcfa634fd2e218a7964d8e46a50a436659115e. 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/QZHNC2236033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2663d41852ca3f8a76d25b30aba384aaa61ed88ae025e7953d5a5341b87d8117. 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/QZNWS2273497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a07ac4405a0efc75b6e2749d5527a55474992a09b6cd7e42653110a1c1b3db8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6F2172553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec4bc781a78d66e2c9a88a871240c57e14cd8ccb41b903625307f0998405390. 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/QZES82175509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c8a066c9fd196239f223c3fae5e4715ca307a0cbbb230ff6903b84fe057eed. 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/QZDA52228473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d4c3d8edc0ea6227d69661de58a9d2af78ba9c13087ac35d6f4f3aee5ac74d. 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/QZMER2173145.