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 0x0bbecfccba193c8af262c11ea27ff59f2c8320f98770d00c84dc53498271ff35. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81cf05e4-a99e-4f93-9d45-3e02a6f1330f.json and https://artists.proofprofile.net/proofs/artist/81cf05e4-a99e-4f93-9d45-3e02a6f1330f.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 0xe04c93063b563b06749851a2ef2049be9085a75f78b08cea41c556f555ef507a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ARA591103112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c3ff51c38acc48b8f8d99b4c133d8c916bd59e9da630ffa734958012433e02. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARA591204455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24733c4a8f6234d70a61bf3ca7b9dcd130dd1e4defa9126a451838ca7e37e6ff. 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/ARA591204458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88d737a67871ea462b1d8c2d10804aeeca3fb48f59e6094f040da0d73f30c5b. 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/ARA591405052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa90e8c018f7430d6337766dae3f70fe3e763b142fcfc25f06ea3c836ed31c2. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QM7281593141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f4474fe6c664f0a10b52d186d7cf8186519b6b0ee3b9b96ea344f94a5f4e75. 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/QM7281593142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab9f0131fcc7e8d679f3423c63a13bf6d1cc0b3c8c43393c9324cb1998547c7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ARG101616505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6184aaa9def3257a2069726f186cb2e471a09b5090289651db5fe5b98d1f0cdb. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:10:14Z), 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/ARG101616509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b014a8fe8b4ff135088c6c0f38f07109d1ab34756a99bdef631ed48492e299. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:07:26Z), 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/ARG101716873.
Picoteando Lo Ajeno / Te Sigo Queriendo / El Haragán
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31d8b029a54c56daa2a8761a948de9267fec1aa9a51ba07a200487e33751136. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ARG102320375.