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 0x0c21bcf64b82e84ac9ed4be93729e6e20b10b97ec2f43764a584b11f93aac19d. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7baa2f1d-d6d8-4501-9b78-284a5f0ef4b8.json and https://artists.proofprofile.net/proofs/artist/7baa2f1d-d6d8-4501-9b78-284a5f0ef4b8.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 0xc31d08b695985fa9d86d357310dc5ecf585b8feeb71a886823b287580ae96bf6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:21:10Z), 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/QZTBB2429145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3fb8e246da2bf39c65e0ca5615c59d6f476bbe648936d02e773ef30e64e93c. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZTBB2429149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c91927af88e68448b10a0b6172fd9be92af25fc4496abd258cf43c6e085eee. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTBB2429150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68550fcc2af57242be2d0e3490844f83776548e6d29bad908f09527e54d5463. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTBB2429151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68865c623320103bf8315204083b85d73722379b43311a3cd1059086a73d0016. 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/QZTBB2429152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cd74a7eb9573cafe6f17b0e3c5b6bb92af5a263e0078fa38921d1f3b17c5b6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTBB2429153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9430803a411be3a9a58f79c253a1b02f12bc9225e6dd5f0483f41cb30b4205. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTBB2429154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe310e5c14169dd0a1a269bbe0e1dd9da3e4efb697a66977260105a60160b9e8e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTBB2429155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4808739e9fb3a53429e217c700aa2fab2ea213f6d0c7b460aaeae08f5d16c3b. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:26:56Z), 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/QZTBB2429156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc324663025bf85f7bd2e06c0ce0644c21349d638f53078c65a41a15c226b0cb0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTBB2429157.
ENAMORADOS DEL ESPÍRITU SANTO VOL.II (EN VIVO DESDE GNN) [En vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bd566fbf59726b7c9fa5976e431cd93103ec5af13b1e6e64d8f097e5d32d11. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT3FA2536852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1767684a93901a22026fab3ac3faa9234593f8d4fa7b56d2095eb2f776883610. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QT3FA2536853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e84c0c0e796c325832aca08a0ec8cba69d35c69e60d0f11acf1038c8c58a792. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:02:45Z), 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/QT3FA2536854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb872bf3adb58c6dc51d4b776ffa8e97f4962d8fe53cbb67980a42ff86bf7b9b1. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:31:14Z), 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/QT3FA2536858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e144fafe32404f2d7faaa6dff6ebe8714480a45a64376dcee869032404af00. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT3FA2536861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b853035d2717e7ddeddca2769f5183f33fb1d006df81268290bf0c602d0f49a. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:18:37Z), 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/QT3FA2536864.