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 0x6ede684c04c30f95f1684b636675eff65a4ef2cfa6a2ae7436496178325cbdec. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d34b39e3-e3c6-4fda-ac00-0a9c221132d2.json and https://artists.proofprofile.net/proofs/artist/d34b39e3-e3c6-4fda-ac00-0a9c221132d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jove Orquestra Sinfonica de Barcelona -JOSB
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 0xdc5d814dc5b12ac90c63ba40c54bfdae701d39c2c95f683c42b0c2adb3c7e4af. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES5101900001.
Pop En Español Para Bailar (Streaming only)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea91d03553f883efebe6ef003885449351d2390f690a379ae7a004e33a9357c2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5119400123.
Sobreviviré - The Groove Brothers Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec33c2069ed2a37c284356130e22806a40ae0ab5d98a9fae47a46cc867a4015. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5110002598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3221cfef5100f77fcc5991f2ec6c314582ce7788a305da0743a77d4ab9554f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM72000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9784316eaa88744a0af4994c6615db07e749d62f0579fa463a972f692b140d81. 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/ES5021300206.
Éxitos del Pop en Español de los Años 2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0f5eba6fa5e491a459bf383b3a828ffd5528f68204accde3d05b11949f347c. 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/ES5110002561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0f5eba6fa5e491a459bf383b3a828ffd5528f68204accde3d05b11949f347c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5110002561.