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 0x5db93b5577cc4ebff66fb24d39fd080a023e735660a1b83babe4f3cc2252dff2. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbc92dae-de7a-42a0-8a1f-dd01ac84c5e8.json and https://artists.proofprofile.net/proofs/artist/fbc92dae-de7a-42a0-8a1f-dd01ac84c5e8.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 0x58de88e0f7aab9dd303bd2974d80342a306a9428924d821480dc8c217b5de59d. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USL4R2061651.
De To' (feat. Almacor, Jheyzell & Richy West)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e16cb6a8dcb66ed745b4d12e4cee61374f464b2e429f32097feae8027436bdb. 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/QM6N22134998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edbb68c4c567d4c21b7078de55c01b0e7d1a8d94e211c8d66761213d055f76a. 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/DEZZ52147861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd679e138ebd90ff46f84e432810ed4d5a2553b4c6a01d803988f1b3d91363533. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/ES8622101101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298c252a649a0a8c1464bc20b52d9f66a84d53870a3886c532637eca8be5bf51. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/ES31G2100415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12826a71ab32a5c6eade84f82ac9f2e369ebaffe4a3f57a97138b3b6bad6efe. 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/ES09C2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a6410e29f22a0d29e7966103ac9a7679d52b5f1090324fc8365300055c0451. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ES5702002485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6377801046c69d5392c578effb4ea98ddd7d260366253f3f27ec2cb41a584e08. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES09C2000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7baf4af2552fe87c43bf8decd56daadfe1162eb5c0256543b9ec2a02dace23b. 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/ESA011740718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd650c5fd0b73942e6436357cde5522867b24af5970c5c4b48a20c81795838236. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ESA012064589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f76ab30539bec1703e4cb5d721c0da4075f3dd2ac74dd8ddee213bfa717a17. 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/ESA012030995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb589f16c267c810255c091ba6abe655c8b104439f46071f0d5a81833eb124d89. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/ESA012015151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2259885f8ec199976f256eaca443d605fc9dcaac00cd524152849d5fb7bd709d. 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/ES31G2000602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445c651ae9b9d7beb40d2a87312fdb1b67114f667d4c2be073167967795a680c. 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/ES31G2100402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05905578d3e0a31fc93e573a82485ef65161baff14dd401c2cf0a4b404cbaa42. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ES31G2100403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6175a5d1beffe2b81ac7d5bb8a8dff205116d249e5778e3e8260268740619b4e. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/ES31G2100404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3907ac60ca9a2809e7314d00c77dba0c85937fa83f6a0f038e67482d78e942. 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/ES31G2100405.
Abusadora - Victor Magan Mambo Tropical Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20dbf1b86e5ee20a66523115bb11b0647317801ed53daad2fffff215ec72dfa0. 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/ES31G2100302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298c252a649a0a8c1464bc20b52d9f66a84d53870a3886c532637eca8be5bf51. 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/ES31G2100415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8353de7393f9bb1563c7131cf76565c58883ac8ef9751c352dfd96242bed127. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ESA092500707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf11434af6e0661151f22e6dab8195f5cc5b767aff93ce790c8568dbe3082323. 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/GX3Q92096896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a843aa64d2e73b5d801789cb529c2f4e4b0f84a6b5706d9a44bfde6be4b556. 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/GX3Q92096902.