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 0xe047fb765dd6603f004198eb426511c51a89f67a04576d360f28b0aaf3103bf5. 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/9f9f9531-934d-49e6-8be6-48571fc5d776.json and https://artists.proofprofile.net/proofs/artist/9f9f9531-934d-49e6-8be6-48571fc5d776.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 0x7164129afb1b51a574eb07ab30d146ac2a7643f3be29a15a70622e3f0e857874. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/GBGLW2400696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765df457742ed30beaabc146edfefcb729966d87ecd9036e4faf94f7d6951e52. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAHQ2361567.
Can You Remember the Rain - Sequence Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664adc54d440c0d0f3ebb1d6b579e62e1af2b559382241d29df5bd319d23d61e. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/TCAIB2467150.
Somebody That I Used To Know (Hardstyle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7e8d3fe6e79d46bafed54c8059d590feff20afeaf76a165c68f9acb8358148. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/GB8KE2320016.
24 Songs I Fell On My Face Made It This Far
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd31c3b938423ce855895f03b9aeace9728fe27a8773d12732762210c65e1de. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBGLW2400519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1385f61695c4dad62a093bcf419a281a52ef29e1ba50947931864aadce9ccde5. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZWDW2427811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d15cb1b3da0dfbbf17dc8b7e1ad89e93fcb7302d92c6787542c6e7913513d4a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXESV8193049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a2c1c92270cfbf4e352a9193796661c770a2e465bb6570af9c403d9fe7864f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXESV8273849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67fd4b56aadea1516db93315903db2f236524dd9985743e1318e820548a0648. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE5XG3327485.
If We Being Rëal - slowed + reverb + muffled
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0885e53b91798153d3936ac2f03e7ad9dbc489c96c26d1fb90f614846e1e438. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZWDW2478774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aabdde5f62b063d6e29c8e71ec638a2f621ee0faa7a7dd0920c67c4d29291e0. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZLBC0384932.
Under Your Spell Best Part Looped - Sped Up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d3dead37e14315a132e6a188cf959dda5c37e44227e96165f53ea36b12c07c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZLBC2837481.
Under Your Spell Best Part Looped - Super Slowed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45c96eb8f661aeb657cc9d4b01dfb50eae26e02413112078568188b53d6ee89. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZLBC7483049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4d0917a0e3a2a93a6728da3339d6b48660dbaa48f69536cc0d1846be59e4fc. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZLBC2431931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609aa07a6b09cd3c7ecc049f6aa50d0d2e0fd76b839d8d1998b49f855944a8d4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZLBC2430550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa806911508cdb399b9d7222584c9c5e1c251940630ebaced4ff4a789df08b134. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GXESV7386937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b11ba4786103ddd966236df372eeff2a25783d4befc3a0e4566e730675a6426. 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/GXESV7386938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f70ee58464151d54fd2d6eca919318151359834101e8b20443c112b7d4d7f13. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GXESV7386939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa806911508cdb399b9d7222584c9c5e1c251940630ebaced4ff4a789df08b134. 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/GXESV7386937.