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 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 0x03ba3fcf8e266b90419f8f22f6951177382dbea822a492246058f98e26c11584. 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/4a2bc961-0202-4ec8-ae8d-27105e95aa03.json and https://artists.proofprofile.net/proofs/artist/4a2bc961-0202-4ec8-ae8d-27105e95aa03.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 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 0xc9d4b1acb15ae47fc732aa2d69c851d66a60946fa62156cc033357b547b6283f. 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/GBDHC2336203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bf81df871fe6a1f7f82d6555ad35eadc3f313ff93a4c05bc1970eb89cfeacf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBDHC2336201.
Heritage (feat. Will Ramos of Lorna Shore)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9a050133ea00b9a80b666c53c0228a395b5256d8edaf6bf10d02553f9cfca5. 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/GBDHC2336210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96445714b2d4bcd5ee133c3814224ab284ab85d4f525cbe20f1e5cabddd026e7. 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/GBDHC2336228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a4c78628e8ead096fd29a975b02f7078a7dd2044c0e93892f063217b4a1c25. 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/GBDHC2336214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d4b1acb15ae47fc732aa2d69c851d66a60946fa62156cc033357b547b6283f. 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/GBDHC2336203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bf81df871fe6a1f7f82d6555ad35eadc3f313ff93a4c05bc1970eb89cfeacf. 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/GBDHC2336201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9a050133ea00b9a80b666c53c0228a395b5256d8edaf6bf10d02553f9cfca5. 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/GBDHC2336210.
Argent Justice (feat. Suicide Silence, Emmure, Abbie Falls, Acranius, Angelmaker, Bodysnatcher, CABAL, Carcosa, Crown Magnetar, Paleface, ten56. & Worm Shepherd)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c63d4c4c7747af2471137e4cbaea392504b7d49cb449021a58c3362d0327782. 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/QZDA82101671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2acf277f14be6f046746ca5ef492d32d86d7804baf483939317ae84da79132. 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/QZK6L2016277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba409d26c7800e9c3cca6437d7d57d6bf05fa5abbadb0ee24e90e1a3f2d3ec13. 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/QZK6Q2063736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb533f485b9a239dab6a917d285a309be604b8290f6d3d51a5e5b5cc3d4b56867. 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/QZMEP2009945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e52612fcfca3eb575e57d5d72d60aea708eb97e9484a0f8dcc502db7a391a80. 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/QZHN72158954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec0d1996919afda4932c68d2f6092001b03bf7ce13bf85ed1941ddc1f845f0b. 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/QZHN72158955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299c68c8c232a3eae2d0222b76ac7705e25a772d8c4fd7563402241675af355e. 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/QZHN72158956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27421e28b9d725ebddf3c6827f3d607a5a3e36e257ad63d286b11e61634731e5. 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/QZHN72158957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c0aa29c5f8edc5ec81b66c47a54fee337d0a3a90cc7fc253c8f1f5ff5de76e. 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/DEBZ72500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d3a6835eae1c01995df1ce21ec5bdbb17274376f0ce79dfa7022fd3d7a644f. 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/DEBZ72400252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1b0722a1b789388436f02a241c9742c7bdca4c53604b163adb3b824686a24c. 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/QZFYZ2492621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31eaa157596394ea9e713804e91b3b0edb49fbcf0f0204d31166d968ea07f458. 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/QMDA62239799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaacc65003cbd735619df3e6e8db1780d1869f00ab86eeecfb80349fad139e6c. 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/QM4TX2221370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1202113011f14ab0fe6b4196b059606f107d8a8cf0aa0493609616686921fa4c. 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/QMDA62239800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88775bdda98b8f289b1beb914607eae56cd8bf699d13b84e8de216a53a7ab3e1. 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/QM4TW2200761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041b496989e545eac0564abf81d2ab1de2c8027d0e374775f0c6aecafe684ad1. 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/QMDA62239798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adb4fed83a978feaf9818ed6e06be15dff390c8ea2b6a49cacd484fb3c2d1e0. 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/QZHN32204044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88775bdda98b8f289b1beb914607eae56cd8bf699d13b84e8de216a53a7ab3e1. 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/QM4TW2200761.
Mayday (Live At Knotfest: Pulse Of The Maggots)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c63d4c4c7747af2471137e4cbaea392504b7d49cb449021a58c3362d0327782. 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/QZDA82101671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb533f485b9a239dab6a917d285a309be604b8290f6d3d51a5e5b5cc3d4b56867. 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/QZMEP2009945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2acf277f14be6f046746ca5ef492d32d86d7804baf483939317ae84da79132. 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/QZK6L2016277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba409d26c7800e9c3cca6437d7d57d6bf05fa5abbadb0ee24e90e1a3f2d3ec13. 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/QZK6Q2063736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08a0bdd5083976456a7b3f865f0ca948cd4228feff0032c1a3d14d5b763a7c7. 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/QZES72023660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ead1d31289fa84e5fc6d1987df7e2d514ba1614a9f074d075df56c611592f4. 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/QZES62082356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf30195d2fc3d0b175d7b2178174d4984a4114447f5168fca66974ae98e4df73. 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/DGA062228940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8badf890cc67ad58d5407cd8ccb741e0712463ca87cb706436a77d57e969f1ab. 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/DE1AH2285101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3b3ea00b0ebfee1ad152e1edc5136840cdcdd32a96c1f1e4f61ca028ba70fa. 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/DEBL62200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc85cc7f5d5d8151dd75e9d592603f9bea3a782e89d6e85d971d239ef669592. 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/DEBL62200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548ad0c7b79440b011ef309a91e82800342120275e508a736c1a30460bae03ce. 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/QZHN42373664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fba8d20d51e29f810aed58dd523587c7f516acc8fa5abf9827ab24fd51a6df0. 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/QZRP52383698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409951b86724fb796fa629b285d815ae270768ee34ebc093d43140e4b924b670. 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/QZK6L2285863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3b3ea00b0ebfee1ad152e1edc5136840cdcdd32a96c1f1e4f61ca028ba70fa. 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/DEBL62200027.