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 0x3cbe955de61c75d786d3fc696006bf0c5feeef0e28d2a41839bd7fc6f9dbd322. 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/d35c4ac2-7624-412f-9ba0-003ecb0bdfd3.json and https://artists.proofprofile.net/proofs/artist/d35c4ac2-7624-412f-9ba0-003ecb0bdfd3.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 0x5b9fc1fff366f46ae94fdd8213391c6cde3fa8a68400653e8b3695b509680877. 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/TCAHI2334919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7143c99a58371447b59563ea831fbaeb23a0171e2b931f13817c3b9663fbd233. 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/TCAHN2316031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228a2c561c1ad15cc63faa37b85f1b2cf0162036da7f11ac686b5af9183b742f. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/GXBAV2418014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d1993ada09aabf7d1b6e6159619c8bc4fc6b7b250f0259b45e743231d900f7. 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/GXD7G2431901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ce54a24a4cf7c413a5022647c5b4d831431038a3525e4a1289578289364aae. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GXD7V2328952.
COMBO DE AMIGAS (feat. Sherry, Dj Alexis Najera & Dj Teack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ce54a24a4cf7c413a5022647c5b4d831431038a3525e4a1289578289364aae. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GXD7V2328952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdc84d8ee24e81b0a74d89afe4edf0a6df014daf01f6841f84d74577d2212bd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BK4DA2456386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27448d64bdb755d6a6e5914b673e0be99dffed536c60c26a96d44fab236e351d. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:38:46Z), 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/BK4DA2458101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff8e236051f52a7f21b79f6a976031db6b4ecd52f7b119644e214e4e77589b9. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:11:15Z), 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/SGB502456814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319f8438958314bbd1e39b9ab3dd871b279983285ce53cf4b75df99fd1796d74. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:09:28Z), 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/GXD7V2278785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7190a1031c80d7468e0d46ba1428fa6154b9e0490be0b546e26d886c0b15a2a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BK4DA2529030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a9756349e719ecb9171ba53a954ac97f1ac9c6d1490c71ebf8c449e56bc246. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BK4DA2545050.