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 0xbf53613cb7e86b06b08bf7a82accdcc38c97c4d0bfb85f2c791420ba9d72cc52. 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/5bad037c-cf9c-4e00-9c96-0f5d1ad8811e.json and https://artists.proofprofile.net/proofs/artist/5bad037c-cf9c-4e00-9c96-0f5d1ad8811e.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 0xfdc1a26da5a4b7e6a81c4239db0ddf435ffdf56ba637cc03a42d39f59dad5330. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFZ41992310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5930a82eefc78a0eb0a647953c68913cbd29a5629b48e57298f0d538534745cd. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZK6P1924910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d04a9db19ad2bbf429ba94303f41b8e3d989d943a52de97b094bef05cd8b053. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CH7812052888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0286afde8401835c8be3eba7cdcf8fe27303a3bc41834c09d761ba7197952f3a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX282128253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321d33042b9a542fc296994d6c343f77a4620d08eda43fb71fabb87c0117aa31. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:47:49Z), 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/FR10S2200165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62385786ebe5c1ccb760e1f6231f44d109b1a92f8c1060ba27eaa03d78e0fd15. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR2X42262124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba712ef1ecc0040f60e09faf239044d132c40785732f17fe27f195e496910fa5. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:53:26Z), 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/FR96X2202207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcaf3eb98b3a248ec7236f19266cd5fd5b15491026db12e052e1d9b9e660b50a. 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/FR96X2281088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a04af1a859d926e7cc9525b2577d67426eb4665b3190205cb01ecd58c89a1e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FRX282235187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13acfcef11f9b2197a48e056f2f4e28ca8d57ad33842699dc41fc089e2e9547. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX452284727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13acfcef11f9b2197a48e056f2f4e28ca8d57ad33842699dc41fc089e2e9547. 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/FRX452284727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3042d6cc325ac4664502934488d953b93c974df056349b31f13011b32d0e32. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEZC62375460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41a11838e4b0c4fbc567d7e2c4643bb8be7dbe7ad84d2787a7911b353805f23. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEZC62408532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc5562ba43998a179a3bd86fcd2441b2a6024c71981329a4265fecb6306e689. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/DEZC62444893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbdd8df44f0390224b6be81f9fb1b5fb48af5146eedabdca1bcf2886dcc02e3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEZC62454919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9e5a33ecb9c9bca140f6abf2907ac23531ff624ea6f55e994411517945c08b. 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/CH7812193186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9e5a33ecb9c9bca140f6abf2907ac23531ff624ea6f55e994411517945c08b. 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/CH7812193186.