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 0x513e25547eaf0b727ba44ab4eb084e22b10d2abc5d751e2d0ecd4fd9494f6fc3. 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/f8501b5f-c32d-46e9-ba54-e2ef1b08ebae.json and https://artists.proofprofile.net/proofs/artist/f8501b5f-c32d-46e9-ba54-e2ef1b08ebae.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 0x0fa94445804d428a861d50365358647fc10a384ded10a2360ed81507de7241c0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWFH2323064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19497e6e5907103e4551e2e6d5030c1bd0093f040a2d2c73d8fffb27f7601662. 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/QZWFH2323065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13638d4122cf617d98229df677980a2f01e04ee413fc44d054f25a7caa88af7a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWFH2323072.
Fuga (From the Original Arcade Soundtrack)
Fuga [From the Original Arcade Soundtrack]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31d9988ad04d592af94c45f9e5efae3ca4b0e8128a35ef5916e6775232f6206. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFG2380726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bacf0d842b54f8424591e86032409713892aff69bc3ba411ed93306870fe3d1. 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/QZWFG2380736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a902e7d8f741eeec2d7eb5684b305a937485fcbc5971956f070be293976c6e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QM5LC2000033.
Hunter: Brotherhood (Original Video Game Soundtrack)
Heretic Squad, Vol. 1 (Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5d7a931c6b9fd8c394b4e4b9038379b97cae3663d314dcaee2d738dbe22b1d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:48Z), 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/QZDA62519105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fca4abc8b34dac500dd2825c05ddb45f308c68ac8589cbbfd7f3683ca60a99. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZNWV2590824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d5ad5ed901caa00f0b522ebdb34e0647674bf90baddd9b64da25ee76eb0c2e. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QZNWV2590825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4396871137a9e455a86aec8d3ea4f144b653f48d897fc0aa09113ac611d24fa1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNWV2590826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cecb1327d4478b540f2cf2ea87383a4ea7a721a7cb5cc0d54c3f683c671991d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNWV2590827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3e0b639969dd43dbca2d552d22831d8b71d28c25b2b3713b8d704cbd893cc8. 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/QZNWV2590828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d16c39f2d7671c9f3c629292b48d9dab3cf9d8708213c0c2bb18fc6f65b49c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:28:43Z), 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/QZNWV2590829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe53456390cf77e3f550f026c446290f8b4a2dc0657adf258391746730b3a744. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZNWV2590830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abe70e1c5f069ffab7bd9a12411e3caea2269ae7999743dcf52110dc8172706. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZNWV2590831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35868dd090070aa233f55fa4a950b9d7b4e21f79770574781b9cb2c1d4c57418. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNWV2590833.