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 0xa34bc1485197d11cca534716534f8b8918937ee065845ab5a6365e31fdabc243. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/609b7214-dea9-4f29-9d78-34415824d59b.json and https://artists.proofprofile.net/proofs/artist/609b7214-dea9-4f29-9d78-34415824d59b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cuarteteando Con la Cuarentona (Radio Edit)
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 0x63806c09e4f9c6f5e38de8427f07345f8e46a0d2dee15f35bd9064798d234ee0. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:18:15Z), 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/AR8FJ2200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ff54db52731a106506b3b536cd7720ea3948729884a66cd24fb04803113f64. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:55:43Z), 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/AR8FJ2200228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930056ab57632cfe5ac4c52e17c2ee7db0a1b7c3a1b67da6f38b12720ef6711d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/AR8FJ2300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b90bf31a80ff6c284537d1ac8df7ad581755179ae381bddddf45731362f58fa. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/AR8FJ2300506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf460c596a136396cec3cdc21d6f7b32125094bd10b2deb9d51a34f6973855001. 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/AR8FJ2300530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1b5d18dd1737da6e45b896fc17ba1e37185617c8043af9033c92518c82156d. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/AR8FJ2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f58b5c6c031c97da4c46dc08015523f9e900c1636e0cd43ee3073daf5d0d0db. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:56:47Z), 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/AR8FJ2400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c424b32a1639b5d2a7d0845328360898d7c84d140078bbd8a17b6a5813e964. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/AR8FJ2400238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14661a0cc0cc5ee58f686cf2f83f3e13bbbc54afee46f2e99bade942800eed9c. 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/AR8FJ2500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d83f7e98a58097ccfe3aea7245f0da0727dc4af52c65bfa413190f28d3ecc70. 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/AR8FJ2500198.