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 0xb2d040d948e1bac540caaa2bc2795ed29b7f8175e3f199bdaede54e62af5adab. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8dce155-28fb-413e-a430-0085a0a40a9a.json and https://artists.proofprofile.net/proofs/artist/e8dce155-28fb-413e-a430-0085a0a40a9a.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 0x8239a1d1cb95e41f6fb19c8265b9e8bc20b2c790945ed6bac125c8aa96767fbf. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:55:56Z), 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/KSA012341249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5d1df711ab82edbf9a38811954d99a57c90a01489d8251ff94115edaf228d2. 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/KSA012356972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45791385111a962d6ba7971e7765e0bf21698160563c2243bff1508d900b9148. 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/KSA012379467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7fbf001ceca347c07a8c3e3f695545d7ef8f14b2a4c4e76e6994e912e308cf. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KSA012379468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3721b834a03b5de259575b47b44caa825c469b8193fb72673e036d6b0b0444d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:06:23Z), 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/KSA012379470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3a131bdbfc8b6dfe3262ecabe9cb3da27ea225d798e95ac13c049d6f19fb03. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/KSA012379473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c7e02d7577d97b09bab93ba276c8de7a14070bd87497ad4f737dae509ef9bb. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:33:20Z), 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/KSA012379474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477b518ef1e26146b2095d2d453634902999d4b514f731fded1b234ea89c0544. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/KSA012379475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738c04f1d4dcd00394bd521396eaa4e5f1bdb0e0faf5b0129d85f94ab63bb930. 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/KSA012379476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf561e51ea514835c3a678dc331b498c8d5bc51021d2e5e8f757b4357bfde4fb7. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:15:33Z), 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/KSA012387775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0c553e985707ccc62654aa399dd3fc7396de8254dc9e1cb4385e599a5c5f00. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/KSA012394534.
Watercolor on a Rainy Day: Acoustic Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dbfcb1a93ffc3cad603f52a95572aa384e10ed510f1c04e4fd6fe8129fb695. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/KSA012404804.
Mother & Baby Dreams (Piano & Cello Lullaby)
When one season yields to another_Harmonica&Piano