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 0x2e824f684af7a4cbc79c12b527e947bed9204caf6c4e78e0626cbf3e54558e9d. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a74e50e1-dfd9-447f-9c88-1e647d30a120.json and https://artists.proofprofile.net/proofs/artist/a74e50e1-dfd9-447f-9c88-1e647d30a120.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 0x80b5153383d22042601028829e466239b152224688aff4873ad9cdb45ddde97f. 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/USDY41952307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ef05b3175f8d307328e0519daf220ac17e770261edaf6a541cbe84b65b9da7. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:18Z), 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/USDY41963079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dabd426456a110245eab3aa9d3e20e936b7ef0316abb53f24b10c4dfbf9e2cc. 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/USHM91924982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e8e5da5a654e058fce37046e3fdce0d78ea2efcbb5da647a361ea5cb732a57. 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/USHM91924985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf8e9d2a682afa09fbe3259be210824aea4dc99cfbc805538a683ea29ff701a. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:46:10Z), 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/USHM82075140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b4f7b3727b1d813e524d7b9f78a4c7d522a030d37b83b219f018d62351e5a5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:11:54Z), 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/USHM82075141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d31ef7af22dc927ca6a597465b9123f7b0aea8777bd1b683548075e7507040. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:39:17Z), 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/QZFYW2183434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf00bbc5e32a3f21a7724f1527b34cec97309a171c67e26e1d059643dd294021. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:02:56Z), 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/USDY42109486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c0050b158a5ae2e62ef33592e27a392d517a544de0500a8c0b126b948c6046. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:25:27Z), 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/USHM22108619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2089486a045db420125eb12fea00aa638008c7016e41c245135025a40881fca. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USHM92142599.
Ghost Town Tale / The Lane County Bachelor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b2bf26c600c0e2927bcbe3b6e656febf2c91901a41b75b4a68903d9159d2c8. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:33:48Z), 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/USHM22237463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802e822e23e6d21a85e14b7fdde10dc887a5fcccf9189b0a1161aeb51f80f637. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USDY42464378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d87b72b791443676ba786dd758663b4bf2980c39937d9f55adb0770d1ef619b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZK6M2429591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b46877c57f5d2f7360ce4eb993e3909fc8c1c05792078847c2251a8dd2c19c2. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USL4Q2463932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d18e1d46991c9d659a9b18fc09241ed2522a94c8a6b699478229b9b138a5c7. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZWFJ2483674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa761b56d3bdbc06b3bf6f16fc70c1024dbe29c433801ae5957c988d826dc3547. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:40:54Z), 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/USCGJ2506695.