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 0x15b4dfb11da47155551a8ce46bf3e857c35f28f9248b4a78b21b74b0f8d3cb4d. 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/77151ebe-eee0-40f4-b51b-1571a71a0c21.json and https://artists.proofprofile.net/proofs/artist/77151ebe-eee0-40f4-b51b-1571a71a0c21.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 0xee1a544c945cbbd6eaee4025ebf88f1b4138c8ef1168bc80bf4fdb1bd8335ae4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USHM22071557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bb67b9f2c527e01b9dd3b65d35fb6c1394f01ac3b22167e3466699377eba12. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:22Z), 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/USHM22071559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9e457990a0c69c979643b69af4d22bc30fcd667da592e2f7c52f91a4d39194. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/USHM22071560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a52c51a61bba21d52475356fc3e5caf6ba5fef7976464f19cfbcb390354c00. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:38:13Z), 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/USHM22094231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56d4b99781e6f933aeca32a4695bc603748c997a638c247799cdbf97f4b0407. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USHM22094238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a162dcedc3a9273acb9a940fd10160cfa7d2233c59067c95b8deee61bcb50a6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:39:47Z), 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/USL4R2498650.
Dios No Esta Muerto [Concierto] (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fc9c872d458c5aa55e812d2c6f7f3a815cb6fa2e62897d800ba6de8b9667ee. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USL4R2498651.
Quiero Darte Adoración [Concierto] (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d93b237a4a2cc4005205c2a7550298e2a44b15d4907f56df484a9d079cffb3. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USL4R2498652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd834550daa9221ac2587a8d6d84f5f64bea005f6e7cd8ebeb42d11f5a67345. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USL4R2498653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3318edcf7bf6256987d674bb51c3d9ab6905bfd89969bd3b173d754b962f2131. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:20Z), 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/USL4R2498656.