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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ada5aa7c6736ddaec099027444c8fe3e6a12e9ee84c00c72692080931f5d19a. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b86d0345-fa3f-4ef6-a27e-4f8096ed101c.json and https://artists.proofprofile.net/proofs/artist/b86d0345-fa3f-4ef6-a27e-4f8096ed101c.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dd6483f98cd2f36f69db24ebf58e8ce8202e399566cea1ad1c6e44d7cb7f68. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/GBMJG2332069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed082a0d7dce1e8cecbcf7bfde35c23fc5c40adfc7293ff3c5ea2a2f2950152. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZHN72412876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e68ee3afc777f369b2ec73d98af37a3d6ee27d5decbd89b9431c7c6ce4fdc42. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTBD2396646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f3568a50c8b012b51091573b8444cd8d6f5b9cf1e225141782fae0178469de. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZRP52306732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6e5ec345a93eccb23316949429a9c4c96370ee69f04f8de5a3b1f53f2d943f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6K2354073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f02a623f0f161bb428f12033e1da7cf024668e5527c8fd0d1c888941527a5bb. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZES82370747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8a04cfb17badfbeaa59f58bced1f46d326d2d55b01339a7ecb4346785cf1f3. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZTB92221107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a61d8f7afb5d9260ccce0cac6a0df1f8fa3053d2010589b3c695a6d03455be. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZK6N2291973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83e07fbbc0e1df51b7301fdc838e7fef3476c92782c255f974cd94691d4ce4f. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QMEU32200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0c29b13d441c1214eb718c90be69861ac18300d21662cd85eb1255b9841350. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QMEU32200304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbeeb6ba8e0b0abf532e930ca7e3dec987e9b77331e0df21ef5a82c6a6b2b609. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QMEU32200305.
No estaba preparado para ti (Supercuñado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29d18bec3c71dc303973e2d951cf484ca072533f1bd1994b4ad814494b3b801. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMEU32200306.