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 0x92553f0e42f5d26653d0aa1ac28dbd5d613e759b9cf05876cb7734a3b315fc1e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c67e2ae9-8855-4000-ae7d-0b105ece5e00.json and https://artists.proofprofile.net/proofs/artist/c67e2ae9-8855-4000-ae7d-0b105ece5e00.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 0x91394742858728c901a6e55db3b392404c91dabaebe15c2c271fd3b79c0d1233. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/CH9181100258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d1a0685dfdde203d2a876f2631ad8a076e471604f6973d124376e3e9857b33. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/CH9181200534.
Bailando Es Que Se Goza (DJ Papi Electric Reggaeton Party Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634107c55d13284d815b8fc6034780577ee0c77e13450205efe28ee3c28b0de0. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:57:29Z), 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/USCGJ1757117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f1cbbec5aa7d1528fa6f9d1082236ae693c63e55a38a6dffbcac8f60d665ae. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CH9181870599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe788131fb00aa357b5f2b0279baf65440d06cf386f083b5757806ec2cf089ac3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:02:49Z), 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/QZK6P2257445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31bd6ba709b454e85d68234af35717bbdd38b150cdc70916e8dd75d6ba08e22a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTB22425045.
Reggaeton de la pinga Freetollk Session #1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa181b35f042db6ea1ee4e387181fcb3f404f7dcc2ff69ad2f70da01f7eebeafb. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZTB72497036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c61450ee97082fa307fc0a64ff194830c08fb3b7d477a67742d84d62c287820. 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/QZWFP2471755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9f4bb46710402893b9b78bc0309efe202e96898b20097b675287b9477985fc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZ5AB1750389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd0db23ebc03b08a914ccdbf22d9c0e26d3c7c2a46df127bcfcf0895e4baff9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CZI441200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b739ba7e370e6620b1db6c2315442a04b07edc5c62dffb1f037e23c8cb3bc5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZW9M2252537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85389b299e275a789185f8b549e70e8a84d1e8ca4064a9c1febe667d3dd3392d. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/CZI441200004.
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