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 0x89374ac0686a21c5d1ae4fdae8b8d9d744240954f9eec08d75af373e8fde3dd1. 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/40a04695-634b-426d-848c-b4be197acef9.json and https://artists.proofprofile.net/proofs/artist/40a04695-634b-426d-848c-b4be197acef9.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 0x3806cfb39a9f745a792bdc0b2822c953f4188036286fc900241821fe0e89319e. 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/DEA810500664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803d69ce42194a9cd4fda33db3d6ce4190cf34f0a4a19bed4e9f29bc84d8dde0. 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/DEA810500665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14eb4764ff781493b7bac0f5a8c5fa1d8d24d8177d44eace8da6e0e7033d955. 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/DEA810500340.
Ich bin high Homie (feat. Yukmouth, Dru Down & VD3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab04452aa0d52b25985b834d5bfdb8ac24e6f283c51c6b70e02fe60aa64f253. 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/DEA810500667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4b4aa4cbfd8baf2b4fbec35c0e307250421f4c8702a098534072ea2f0d9fdf. 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/DEA810500672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c641847e99cc96952a8098019c700e300afab5f6c514b14ef72cc61370a38b. 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/DEA810500673.
Leben eines G's (feat. Kalusha & G-Style)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549d72e5e61c348700e2022a84a4f38c8cd749854767e29109f1bf420d6135dc. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/DEA810500675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d41a20ef5c8ebf25059c2eb237b0113d343379a68150a1ae2e1df9773006d6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEA810500678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e274289e3c24902e79ad0298466fa4c9fc9190b9f61d72d7a9d1f8a54aa4bee. 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/DEA810500679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892cf3944b3a302adc1864c079e4ed809d2c1580ecb1b14f3e5259dc55bb3e6d. 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/DEA810500680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0a2f3f8de79b50cbf5562e41d94dcd63010a7e73a47ccdd870fdb7b1ba98c5. 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/DEA810500666.
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 0x572af78917e5b38fd511c26261185743d7ec15d633af6714aee3e92c698af154. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEA810500668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f5118c0671738d6313094963670dfab4a621f94f57756ff54eaf8531e380c1. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DEA810500669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef4de8f2dfef0c8c2dc7d98386b9d76957af0ef0408724ded890399d3281678. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/DEA810500670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0329b412aeaa0cde3f09687a74b3f2bcb3d2cfd0ab2a3da0cd445168120926e. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEA810500671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ad211713d2aadd0ed47e7c15c389bda5dc9eb089fd73777bc77655fbecb3a3. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEA810500674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6110f6b47edc692e7a7985675d519d93a657081f096826d18e81be80e6e4b7f7. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DEA810500676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727bd00b63e5241e42b9282ce7532e8db3b5407d0808a58154ca03e75d7cad5a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEA810500677.