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 0x7b08221f4fd1b96a7809877453ca24378a800180b3ecbb4ff9e90e2ee00424ab. 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/42439d59-37f3-40e4-87b5-51dac8179588.json and https://artists.proofprofile.net/proofs/artist/42439d59-37f3-40e4-87b5-51dac8179588.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 0x9adfbeb6c620e2b6b3e7760350115479d14908ea07cfe4001f63fa88c7527f00. 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/IL6432200884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2c0943fb330c3cf524982494e5fe2e595b7095a7cf2d35a07d118107f41517. 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/IL6432200826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3ec55603f8702a931baef2f2199a336e49d52fd56146340eeccc6d1167762e. 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/IL6432200825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe758402a430954e4b018a4423b8ed400ab937224b111d4f3d191a8716c32f305. 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/IL5842342663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e19d92a0981c5b3ca8c25081e185244e01d5811edf9e0b1c6d66bdc9a53b62e. 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/IL7192301160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8a87415771d41872637c6752fd6c99085a58370b0d6f922b5ee495f07ff45b. 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/IL7192300876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21077208a0e46dbb4d9b544d2ae8485de6f02dd54c06a93f44479564e0aacdb7. 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/IL7192300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a53bd1ea3ee21224055dc0a3ef6de99680dc983cff79280f56d54a49f34306. 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/IL7192201027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe909cda83b246c13ffe0d01e8a46fc71c6e0a77e0f00b17331bff117b478ccdd. 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/FRX452221976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2793f5847b722c3e6e8ddab57f4dc6d0d7142b759e69acb58f89fe2b1e9256. 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/IL7192200622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe001cfb1fc5d504ad1aa5e8c98f30332430db280e382df5957c61c4e1bd59ded. 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/FRX452265965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03fe96fd1e51df7e54aaadfdfa4e9712c5c058f03fd750fc9ebdc686a12ec79. 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/IL7192200640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03fe96fd1e51df7e54aaadfdfa4e9712c5c058f03fd750fc9ebdc686a12ec79. 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/IL7192200640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe001cfb1fc5d504ad1aa5e8c98f30332430db280e382df5957c61c4e1bd59ded. 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/FRX452265965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc8d2497bb84c7ac9e8a0138f10baa4b3bc4ed030d470cb5ff07660ad6e0f31. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/IL7192200621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2793f5847b722c3e6e8ddab57f4dc6d0d7142b759e69acb58f89fe2b1e9256. 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/IL7192200622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1234770c94d01c5e2f3901ca7cbefdbd90b876c2bf770490f6c8cb2f3808cb. 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/IL7192200359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4b68e5d6c03acfef9004687afa9dd26a441663754ab822247c14b92c793141. 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/IL7192200191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ec3fa388d73c22ad2812696af849ab0fae32d4ea6764099e1606d1428a2af1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/IL7192200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48604c76d87a3eaf5b126728d4e7eafec4300957f559b27149c0abce20adec6a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/IL7192100699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd55673e6ec4b5d9e6e5b4a8147a3c518a8bb809f0accbbcfc362969597a364f. 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/IL7192100556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafb717854b268911c94cf1b23fca8440bf4b115428358947867a5e205b1b11e. 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/FRX282158056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f47f7b83da78c78e75cd4b8fbb8dfd7f1268b53940ff7df6322f9e8995e3b3. 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/IL7192000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51cffaa4f8fe2c9df2fb9bb79de85d33b8d50a4c2bcd4e6a6ab5c104b895d20. 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/IL7192000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f88f726bb635948fd634ccd069aaaf1573443f8555528761254e8d4d4fb52c. 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/FR10S2099246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05a35bdde7b011d56f9c03413522e06503820b40f1a98c3eb8117e104293f17. 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/FR10S2099300.