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 0xd1d0f0b4375369853c0ebb9136d7a0698034df710db7f91f5fecbe9b158b959c. 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/51e292ad-fe7b-4423-99d7-898b47331cb2.json and https://artists.proofprofile.net/proofs/artist/51e292ad-fe7b-4423-99d7-898b47331cb2.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 0x18189707b0c4738b81cb552bcf66dbf79d4642ab4e6c6df834400da432d9fd0d. 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/UKN6K2002561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6270cb5918f5251e16cde5bea0e4a5fac9c8a50f3d3baa421b01bda01f8d8b7f. 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/UKN6K2002562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c38a983e6ee44a7a013a20e3f778df7ff93dce93f776c5007ce4c41c8728417. 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/UKN6K2002563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d2f5668a27563fd99ae19f2e127cd2d9871c876af7cf2795150f63cf9c9cf0. 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/UKN6K2002564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc55d6960869e2df8ae31197764156cbbb554b24a144ffb52a5126ae61117d11. 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/DEU672200203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4c87f27472824ca5e90b58445fa4f0e5f9383d1ffca6dde472a60ce0f05f04. 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/DEU672200204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d05cdcc01f81697eb69f4184e91f06266df10daceba70cbe3fb785a3925d66. 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/DEU672200205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed7f79aa93b8f9b09d5798066678c69f60c454a24c000d24a2cf13a8934910a. 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/DEU672200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2344e337a5f86bc84cda6cd0231736d1118151fcc184f5c1801489f7293cbd80. 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/UKN6K2200659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed70f43fc3868f24729f8f6efbbfffc211a2f5301dc4ee131bc786719ffbf5c. 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/UKN6K2200661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ec45c1ef7b9ec15562ab53abd52726d2109761ec06c2a79e9fcf502bc47e85. 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/UKN6K2200662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270202c608540ad8d78b8196cc6dcfdb44a7750da84392c137e8ad3e76152668. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UKN6K2200663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2817bf2fb94b97b7475ecfb269012c1094acd404570800b127529211b81c2306. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/UKN6K2200660.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb663a5b5a2b38dace215109e2bf786fe3ce451921aa4634bc05534b72e5394bf. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEAE62200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e94ed637437bce00be4fe900b4a20137f78e184f6d356ed579a4daadf470e7. 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/CBAUX2302308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3458aac8b5e8d91584a5039af65656b3c4c59091baace046dcf3f61ca0d8b720. 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/UKN6K2100676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc34a06806fbc93ec640504d241192974513f89b111e0ca8dd1b32df24db1237. 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/UK6491400065.
Daddy Calls it Europop - Julian Muller Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600c9b7fcd8eb336f2c6a4a0567bc8cebc2dedf07c7d6a5d55bbfcabd8452dc6. 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/NLCK41069750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264741006a9661b64c24c5b85b3921bd86a32156c4f50f3238fc490863361f2e. 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/UKN6K2200453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264741006a9661b64c24c5b85b3921bd86a32156c4f50f3238fc490863361f2e. 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/UKN6K2200453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974057e8907523d45ef77fd1af8951900491a08aee7829b64a6efc2fa8112a5d. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/CH6542010779.