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 0xbdf60485f8ffb534e0f09cf9ec018532a934eff98bf80ea5776ee2cfdf3fb1e5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a6f57b0-e275-4939-a88a-42cfa3722ac8.json and https://artists.proofprofile.net/proofs/artist/0a6f57b0-e275-4939-a88a-42cfa3722ac8.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 0x6b6d1a90e38723727e8f31f98ecc7cd46f7684127879714d4f4e2add9d52ae48. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USASN1302282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bbb226957aa895728c909f5181e965f61e5aafc69f0fb8e6a5883dc86c6514. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USASN1302284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7f70e240044d8ec6a1258edd1e1d2f15e543474c774a25a00b5c3182b2350c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USASN1302285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956eb8945ad413a40b557211762a9a80ed92d756df66c113e348f412bd351322. 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/USASN1302288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e78deb727a27477438e7245c95a6f4ccdd85a759991eaac11636600cf7d701. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USASN1302290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f233127b824c737db441d85ada6c8d2a9d8ace791be67b27caddd81ef39a02. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USASN1302293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd3f75579c042ad2a358b1c76f45669906fe9da6ca950a48a07dd079104ede2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USASN1302295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ca8c148decaa018df0eea98518e32621df8580ba279a7bfdb6d89b2258048c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USASN1302300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3f515d82156ad4233d9585daaea546495ce5693742e38c8103b9259cfed1c2. 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/USSD11100223.
Balada (Tchê Tcherere Tchê Tchê) - Spanish Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d132fcd03c8e914607f33809dc4d73a3ad968fe4b5e6403ef35962b1ca6871. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSD11200318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3f515d82156ad4233d9585daaea546495ce5693742e38c8103b9259cfed1c2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSD11100223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c860375c5d9ecddff41686aeb08f69338453a5334601e070cf8755b83a339a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE6HN2203230.
Llego la Noche (Remix) [feat. J King y Maximan]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424de436eb4bfd69144cc9ae43857b5e6aabb0603ab5f04766da78fe30e08371. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAES2066119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165f05a852b6a1d52c7fb0ab84b7f1c41869cc33bbd341f221d2c30c1a252a22. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMRSZ2001224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3376a33adf2858cc56f6c0a083f5e460e45de5a6e074971c94d09e8b2b6a92ea. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMRSZ2001229.