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 0xe77cb303feba44abdd84515ac21d70cf217e3318fd49dc5747c86829eda76788. 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/6c08fa6b-4b43-4de7-8718-191945ba084d.json and https://artists.proofprofile.net/proofs/artist/6c08fa6b-4b43-4de7-8718-191945ba084d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bring out the Badasses - Borderlands: Mad Moxxi - Ringtone
Borderlands 2: Captain Scarlett And Her Pirate's Booty (Original Soundtrack)
Borderlands 2: Captain Scarlett and Her Pirate's Booty
Borderlands 2: Captain Scarlett and Her Pirate's Booty (Original Soundtrack)
Borderlands 3: Bloody Harvest (Original Soundtrack)
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 0x1bef344e8d3c64648ebaa94d160d3e2f4eb0870a6c36134b8ed813eb5f12a08c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GB9TP1901712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae81d3f529f167e103b55e95f0640d75ced6d89e079a7e694dc2344b553a8b95. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GB9TP1901714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e76e4c5143ec3a1548f5852f3bbd3fcf0f556f1c072c0b1339bc6c653be550a. 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/GB9TP1901715.
Borderlands 2: Complete (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75e6cc8081b1f646aa4b53512fb95c1ee06ce1244292720b8a08a76fa215cdd. 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/GB9TP1901231.
Eridium Blight Ambience - Original OST Extended
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179fb16a968ebde74569ab3439f3dad8bc45b63d39acec3bc5d5aaed4bd983b6. 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/GB9TP1901233.
The Unassuming Evil Docks - Tiny Tina's Assault on Dragon Keep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cc6512b0a8c9d8f10193c37c9020fb7a13cd64d204fe4ad8e2e5236490017f. 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/GB9TP1901253.
The Unassuming Happy Docks - Tiny Tina's Assault on Dragon Keep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c4e970f0ecf9f8663630a75320cf8889a426a1ce9195c84775c4d056e6821d. 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/GB9TP1901254.
Flamerock Refuge - Tiny Tina's Assault on Dragon Keep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534109ecf2cbebdee6b037596b9f3d41d639dae750d7ec9e5bdcfa7660cbde3a. 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/GB9TP1901255.
Mines of Avarice Ambience - Tiny Tina's Assault on Dragon Keep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0bf6bd16be88e4a1a93bf2a7d4ba391a3ae4f7beedf10267a362fc485daa0b. 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/GB9TP1901258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e1c45588e51d4a3639b3aadf41f658abc518321c5c48d49e6a6ad7cfe86556. 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/GB9TP1901351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21a0e491b21d242323d376ad810f3cc30c31e1c38d16e9c0a705b10e9c2d1d3. 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/GB9TP1901352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d0d2791283c7753e35a60d2454a4a348b471f7fe28738c084cfdebf7f7735a. 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/GB9TP1901354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08eb736d409697af2471cfb82eeef2880a08d9e70210287d1fc74eb3dc6ec0e3. 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/GB9TP1901360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6c5bb3e2aeebf58d55cab7fe91fb34fb8bbdb82a2c8b1c1b7f6bd2fd512091. 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/GB9TP1901361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb731020414c9902d9b58607df2affa2f01f8116363585cc94e370dfae11a1b1e. 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/GB9TP1901362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf07b23ee70d66bff682d4a599eb26b8482815c6d96f9895f770f8b2428cbec. 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/GB9TP1901363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9084affc67858659d19403ad178cf10aede8806c521b43a80a2ec6f8ae1ad6b. 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/GB9TP1901368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c837beb7dc4e5dd86560ad75e98c6dec0df3311ade0ade7fbca55b983de22d5. 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/GB9TP1901369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f3b4007b87ef1ba0c5c6a6f48aaf0c696d56cb6b65eba82f1411aee3f30338. 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/GB9TP1901376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1182bcc7e7bfb9f6c69e02ad525523d3bffd8db240402b686e38d1298dd7c721. 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/GB9TP1901377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53ef2ab84c6ff6eb77627737c45710ac7db17be6fc3b638e01a4d419c56289c. 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/GB9TP1901378.
Red Faction: Guerrilla (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc9c862958737acbc2ad47015e2c8b16cfb002a0a9e26e8150df5324340a63b. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USTC00963934.
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 0x033513aa7e13196514414fa6bc408241e8a27bfb15611868c6bb58acbe559c85. 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/USTC00963963.