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 0xeac7c68c7a20c6406d237058fbfd5cb2e174f2b40bf5c2673ab825d88d6a057f. Chain 2 (Bitcoin): anchored in block 953743 (2026-06-15T04:52:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a200efb5-83e5-47a9-9f87-d1db29724150.json and https://artists.proofprofile.net/proofs/artist/a200efb5-83e5-47a9-9f87-d1db29724150.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 0x2f5330929d797916895fa2249191020d08fca99ea305861369fa2ebfd5560b6f. 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/DKEUA2400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a97f5c78c633517706abf492cf6df2e62768231adf17d54b6fb484136e7cffa. 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/DKEUA0800711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62674f4e87c2f860eaf34b137ce9cb7c208c322650dbd242bd6435e915727d4e. 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/DKEUA2100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7dfd32ca963e66a6551fe1679b32488f0026f30211783352e9f7542eed6eb9a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:17:10Z), 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/DKEUA2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295f8e58a7d349449630d84d614df4658aad0cd9e6c7075dd2e07cbe4674559b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:08:20Z), 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/DKEUA2400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054770bd4eeb8acd3809ccb51156e4f85980c4570a766a23889e4c082c1e9c7b. 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/DKEUA2000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62674f4e87c2f860eaf34b137ce9cb7c208c322650dbd242bd6435e915727d4e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKEUA2100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62674f4e87c2f860eaf34b137ce9cb7c208c322650dbd242bd6435e915727d4e. 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/DKEUA2100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69e557743d61ede746d98a6981d264307ebb64bca1ee80af674f773440a6adb. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/DKEUA1800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1467bfe4b8f8442467d2512cea64cc33fc86ad85d9258b73702c4e3c2c71b89. 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/DKEUA1800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17fed5e9ce82bc1984aa98ea958021f0e7386f06c9094c66e899bf604b9ed85. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKEUA1800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf8dadb49e5c8e95d3e64887308e9592421cf65d6c445299657bb0366d91a52. 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/DKEUA1800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14fcfe380525a655342225a3de32170cc955648c6d7c5ff8ed1514b43a45752. 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/DKEUA1800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca723af5b52e3e6bb62dcfcb5039eb47d668191d065487319cfff165673529b. 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/DKEUA1500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cd8a91ca67ec3e8e3adfbde4a1f5ed32ec5f193b3cad219f86e6b37b727a3d. 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/DKEUA1500112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb069b1f758a03316a4fe6f00f7f8d3a0bb47c9cf12c114bef3c2b4ef1f79457a. 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/DKEUA1300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe54850473aa69785ea3f4d48a471885bf079b45d02c061369e7417381c52492. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKEUA1300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfcf129346d6a87fe5257129c6462ad068df6febc69b913ab40708dd40b96ab. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKEUA1300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e9e0da5ac82b7f3f062983c50aa72b02a1dc6a2834f23223c433d7a50bf797. 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/DKEUA1100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96905ef5fdbb893363694626f531e963b53a81bf0a427233cec8144d5dd09ce. 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/DKEUA1100212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9195280acb4203672b391ec6d6206a3d911fd4b64c88d153e243eb97938f28. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKEUA1000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f47dd1dff95debaf7a4e6a96370f9af1c13092c80d9463b3c42aa2f21d0297. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKEUA1000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440ed5dfb5208a37dc9993a952d75c86afb6b589014d67d51acce3eac78ad96d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKEUA0800701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe955aeab31c30e3bdd5ee471953caaa6f88c2bb99f0b90588d3e77043e66d5a7. 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/DKEUA2300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a282104ba15122b8cf6db98ebc6b1dc8c1a9f8fc8d25bfd3876e22309d82c4. 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/DKEUA1900101.