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 0xa20ee181a7fef292c61834ffca2e4f8a84f7e0f14b7c86c3a49fe6819e41dcee. 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/6d54ee5a-a7c7-4d52-aff6-f85dc8a63f5d.json and https://artists.proofprofile.net/proofs/artist/6d54ee5a-a7c7-4d52-aff6-f85dc8a63f5d.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 0xb6ed15fc396c62069cffc623059c377228fdfb431c93db1db50fe8fb99cd2a35. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/QZGLS1929152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6895dcffc34c920613371909e7dd60300ee42f52dda31c4ff4ba16aa495dec61. 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/US7VG2127099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ed15fc396c62069cffc623059c377228fdfb431c93db1db50fe8fb99cd2a35. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZGLS1929152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b14e190b672991232a1348ed9be3fae14ed09a01f055588d62b7159c119d441. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJV2058859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5266d651817ba669536a43abe66aa76ea1a456f01cf869f6a3ff235583565768. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZHZ42122168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25559563c505e00d101b46483e250464024c75965c146f1a0c71c591ce328d65. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNJW2152700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d26a00916252eb736086abdc38760822cf3690d60475242631f8f4e2b944e6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJX2082901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6895dcffc34c920613371909e7dd60300ee42f52dda31c4ff4ba16aa495dec61. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US7VG2127099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1f4a59c29b74ca647522561307d7eda26753072187d7c3e193e4bb277fb7bd. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:16:36Z), 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/QZNJW2152701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6ad49fb54c4671c27dbe6a1769635ffd607da48f02277ef7b1834a3472cf6f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN72293434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6ad49fb54c4671c27dbe6a1769635ffd607da48f02277ef7b1834a3472cf6f. 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/QZHN72293434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7405f51a84e8d072080d4fc44df7be6500ec1c312c48d1fee32d7822c6c1ca6d. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:57:46Z), 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/QZWFE2306752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b4fd385c2df023bb95d359141ca6af59c8a3084ca5ec515723d5cc187afd20. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZK6K2584384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0743e3a5689866a2b089cc4625c965a4d5c59aa7630a9853c01651b63db8cc. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZZ7M2536960.
Una vez más (Banda Sonora de la película "Desastre en familia")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e44505459512e19ed41d00d9ed1c307d7a64c8e50e07d232b0003c9c7be04d1. 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/QT3EZ2537287.