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 0x43aaf233d8455eaeead4357a3a5256cc859e5af7fc3ae7f113d6d984b6584cd9. 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/b2ceb823-6c80-4f20-b412-92afdca0370c.json and https://artists.proofprofile.net/proofs/artist/b2ceb823-6c80-4f20-b412-92afdca0370c.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 0xf0099a18b501b30b5ca346c255d350fb347d109bf68080876fddfb3beb6e14e4. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/QZS7J2314281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bd32041ea03d68399cfd23bb9c90f4934002be0ef63f36115db66744d8db33. 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/TCAGW2390017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4915b15fcd91e808416af268db37559abcf94d0e4ca30a8457d254a50fdd0a. 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/QZ7R42354016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe367e5624265c3091140987a7eade31a0924449bb9ceb28b31fa241ccb2b4cd9. 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/TCAGT2319404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77a8143dc65d1a58b4841c85621e62ad125d5f8e8aeaac06fe53f3605542d8a. 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/TCAGJ2297121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8204c181524614a6ab62d1b92d518d6085d5196c4640893cd8cbf46b4d9a5631. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAGJ2297228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3689b7cc4ea42b2843d841c40a73c4e5dc782dd0197e709d60a545b4c2c743. 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/TCAIK2435716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b7410cc2ab02d3e9a17b6048f69e35344f446f52f0c49fd7ef8dd83b575297. 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/TCAHZ2430352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe705c7dfa32abc1d1c52cd30eb6a6f7dc6554426e5ca406e4fe224cf71eb5ae8. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/TCAHQ2366227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1272c85a5507ea58a703baf6a250db49223c29307ecd0e3dbe0ee86cf0c71da. 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/TCAHE2395147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbc3565dfbc5539fb36cf844c0d395427dac9886d2ebe0e3f648a9b95164e7f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/TCAFU2167743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9bc9ccd1c43b864aba8e954bdb8b8b1ed5ecc855a4508670a8b7e9f164272e. 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/TCAFT2114384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7295029ae78defa98c3caa2f2de2d886867e0ab3b632ce9959e634f1f6157749. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/TCAFR2139018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56845453bb1c11711dab84920f5b8062b3e3d90053fbd553d35dc843fc900548. 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/TCAFM2115196.
Moreno (Remix) [La Dukeza X Pablo Tunes X Akye Ruiz]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcc73da3bf2cfa3832d346e7288394b89a0663aa49f8a446f0d470e93d3327f. 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/TCAEW2095487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552695a785142c0bc111abaa744cbc581c63b8dfce2213071498f764e0fea631. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/ES71G1942586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae20ca124e0f9e2cad7937c94b6be6df015c9b1e555b6524aa1a89e255467de6. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TCAEA1974203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24c8e8526fbe126fc71382fb2c5d9ceb20245085a5097f7d1505e8b3c508a72. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCADR1866453.