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 0xa6f4c4e33cc4ee96a306dd3ba6378c30ec48c593166b1112b5be3703397f5b40. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dfbeb5cd-0756-4f73-978e-7bc5ec159fb4.json and https://artists.proofprofile.net/proofs/artist/dfbeb5cd-0756-4f73-978e-7bc5ec159fb4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Swedish Schnapps + The Great Quintet Sessions 1949-51 Vol. 5
Nightclub, Vol. 86 (The Golden Era of Bebop Music)
Swedish Schnapps: The Genius Of Charlie Parker #8 (Expanded Edition)
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 0xd8fc97d76b9069ceab3a317f9fcd473206ec746bbfeb851188f71c3d2d57711f. 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/USF095125150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8593c6779d07c005dda71e8379aa2eda5451a7be7d25508a05cc3c3baa9d679a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUM71604818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4039e2576e721109c7948a85b4af84dee45c8252b4eff1b6751dd20206617d7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:10:15Z), 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/USUM71604819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13f975244b3615b121567a0695c7df51d7074beee1ed8e46571a133e4b3bb6c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USGR10200480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d2177fab9c2bf4c316ba3b92edbf0b15241569ab2e126125b256b8d6819882. 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/USPR35100067.
Back Home Blues - Take 2 / Alternaet Take
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9293e8e17064c9749094b2f6b54f978c9012583c95850690902e2e2d054d15. 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/USGR10200483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13f975244b3615b121567a0695c7df51d7074beee1ed8e46571a133e4b3bb6c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGR10200480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d2177fab9c2bf4c316ba3b92edbf0b15241569ab2e126125b256b8d6819882. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USPR35100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9293e8e17064c9749094b2f6b54f978c9012583c95850690902e2e2d054d15. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USGR10200483.
Swedish Schnapps + The Great Quintet Sessions 1949-51 (Vol. 5)