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 0xecd2daff4956fa280cfdb8ad8cad75efe60778d2d32e8ac930afbba9da4e4942. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80599375-e969-4f84-a388-5872f1e64520.json and https://artists.proofprofile.net/proofs/artist/80599375-e969-4f84-a388-5872f1e64520.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 0xa7e2c521ee7c92dddb798ef1dfdcb4d389fc22eea28b39c348732aee4c211d5b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UYM129900601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e106a30dc0b60569b61b149bf147d5945a4690090bff435f4d72d8eded8b549. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UYM129900607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d095a4b65579cd8eed4371c54e54d4cdc51d147f205e2ab4565d52d4dc6c397. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/UYB140701602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b56884ecb472e706723b346462491d1bd4de917f18503049ce6521676058e97. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/UYB140701610.
Isla Patrulla / Coquibacoa / En Tu Imagen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8b74cce94323c5af6c2f0f07bbea3135a3a9ee79c176394d7d83d00f83e07b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/UYM123002467.
Maldición De Malinche / Que Lindos Que Son Mis Pagos / A Dónde Irán Los Besos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbd8752c784dcb15c126e87fe2740ab04a6c1f73c7228b46268ef1bce1c870c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/UYM123002468.
Son Para Un Niño Antillano / Del Templao / La Letania De Los Poderosos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316b548d99771ad2528b4de6acc2411f5a8ec80cd5de8c77cf4c03ff15c1b722. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/UYM123002469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793cf983816fe5fdbfcb3fb4198e3b3932c8f132339eb26c3d10d9a53f2d377c. 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/UYM122500659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175741f0db2d5ef38c7d45907c8be53fa12d106e259e9e77ced4428208ae9097. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/UYM122500683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fb1ce6a13d85cc953732fea8fd51304fe6d358288c107a528e12d81b32dcad. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/UYM122501099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fb03b056e308f3a63329103accff952162d90aa2208cc9721a8f1c3351f94e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UYM120701426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac10403ba310b13d42628053d0d89fe0a19f40e8181fd1961b372e67e861bf96. 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/UYM121401179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a1f309e2634a231491a5fff3750ad8fdc7e4bdcb5a771d5f847e45978ea1d1. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/UYM121902549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bb3af12b64dfa03c6b3c53ca7f868ad81f389d24604844f3ebfd66400cce5f. 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/UYM121902560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c58c4b0fea8b316078204a9b8ca4bdbab90dc3611e982781cf374cdf0b7c2b2. 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/UYM121902572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d0907a9ca8289a8221fe92c0408f8af3dca8932c3283e80292ef1247010468. 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/UYM121300530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fb03b056e308f3a63329103accff952162d90aa2208cc9721a8f1c3351f94e. 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/UYM120701426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87310a2dcc9007df5e42949673307bb8ae617574c58a10cbf69fabbeb9dbd1d. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/UYM120500676.