thumb|Cross-section of an unprocessed piece of ebony wood Ebony is a dense black–brown hardwood, coming from several species in the genus Diospyros, which also includes the persimmon. A few Diospyros
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 0xc5af4110dbfe6c4cb071cfc8dfbb4ae57b356bde253323146d94aa883c6c7d51. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba85d7f5-0402-4ba5-b786-63c19e5ed914.json and https://artists.proofprofile.net/proofs/artist/ba85d7f5-0402-4ba5-b786-63c19e5ed914.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 0xd926f75d555f5f3d69a41cbc79b020a353c1b893196c9d66688fd190b994afd0. 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/BX3AW2300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb796d78a2752f8aa859105e77e2ba3b56877b114799cfa31b52d17360bdf0c0. 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/BX3AW2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2fae362c700f627c7478ec415f001908675bbf5ccb3fcc0628629ac9ca1270. 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/BKHA72300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556b206483ce3adae56467501689daf8ff3ea4e7cde4c31dc67439d81510295c. 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/BX3AW2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98a3c92d90eeb6d3acd57bd3a4b657840e17b38dcf52e3252f6b67683b61ea1. 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/BCIE62100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd83fbeb4f2fa01cb27e29cdfee5a0d30cb42434b23e11323d901a1defff862d. 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/BX3AW2300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cb3f2f9d42a6f33232237d99e3a91b2b15fbdfc33a30abc4fe57656eb7a43d. 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/BX3AW2300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556b206483ce3adae56467501689daf8ff3ea4e7cde4c31dc67439d81510295c. 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/BX3AW2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fccecc80bd6c1fb44ca1f781332a96228c80ed798f1c5e8adf8b49c7ce6911. 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/BX3AW2300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c988a8f01068cbb14b934982aa8e62224b3f90636df3ca31b3cec7d0a12438b. 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/BX3AW2300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b6da75eeaa39b7177bdcc5ab4a610fb05c871c445e119b6f0027578fd27090. 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/BX3AW2300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba46edd932dc978097d3e0831b82bf497d7fca8fa1de7b1de5cfe16ac9fb9fd. 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/BX3AW2300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46a5cf706078a40ab9acd29ec67494099156166ec6bc7f90a384775e725293d. 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/BX3AW2300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb796d78a2752f8aa859105e77e2ba3b56877b114799cfa31b52d17360bdf0c0. 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/BX3AW2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b9a485cc0c40ae8968cda20ff865b7404ac0ecba2aa4c700840a10b874f210. 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/BCIE62100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4842dfd263bc712f5d5beeb2f37be4f76785242fec224c45c580b1d22f46d9ad. 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/BCIE62100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747dbd725fb89d50b4526414bd66907bea83ea8f0d3f0ff6f1a021da63aa422c. 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/BCIE62100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e54dd4a250114890f207dbcc2556cd9d8d0f52780cfd8f317ba9d65d98e5cb. 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/BCIE62100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98a3c92d90eeb6d3acd57bd3a4b657840e17b38dcf52e3252f6b67683b61ea1. 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/BCIE62100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6104f21c4c93c035a1049050adf95ba8e8bb0d4dfaac40452e344994b0ffd91. 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/BCIE62100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa430980009ce5ea5f80dd90854ea5257a9c82b4f44ba23131a7c7a4c4325b2c3. 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/BCIE62100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd072e1726d4ee5ac7513674b83cb98021717203bf8dfbf4659ca1deab0c1c35. 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/BCIE62100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70267566b0941e5ab1183f8ef552cff607d36b075c7c53364689ab975e83a119. 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/BCIE62100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4b3baebf0e8558d2e64b56ea454d83eff4791057b79033d54360cd76be6a4b. 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/BCIE62100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc68e299c99d980a6cc88d1e8aae6f50805dc8489df06ff3e9e5382df715a88. 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/BX52E2300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050de81d248202b8429d1246f42b27de6cb3c56e903f949275bb6372e0cc7cfa. 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/FR9W12311636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a58da6a5e7cf3d0e25e825c8cfa5c1232ee6fc9020ad4f5ef861da96361e44d. 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/BX3AW2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05fc1c3fa301e8e07e49824061bd9bcd11dca2388b95b59b2b34ff531c0c88e. 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/QZW9L2293673.
Tons #3 - Velocidade (BR 101) [feat. CRIVO]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4eaa648bd2ec6bac9e4a2d3f5f34de237a708b8b54dd97e311639c63af25cc. 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/BCJAV2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05eaff5d3e30d1d821ee0d6efa81a722f6fb6bde4609efb1c27434b9961dffd9. 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/FRZ042100243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fbab0a0d04dc5a25fc05c2bfbad2c966f401a416d631d88bbac7e2c664efe0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BRRGE2010646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad9bd17e727e2b60b0c6b6b07ca69d951ce2616fa16fca9dde00f9cacb7509a. 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/BX7MG2000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1529ad5453619b334d0027a40e8cab31466ab107d768f5806115250174780f. 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/BCFSC2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ce7f9f7830ef4e4149248ce1d941035e2a9c788adfdaaa519777588ba1891e. 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/BX9UU2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d36d2452a17d82111ccf573ec31d0d5fc2fefee96ba28a7a08666fd8d1fb87b. 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/BX9UU1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50919549e62cd90b22362113a5367f238b60a6c1d5595661329e8ff85bff651. 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/BX9UU1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe076cb090671a4a2e2a71ba0a393b259f78c27ccbdd343f1d12abc9f1d0b520e. 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/QZGLS1976154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b03218e40770a4887043ddfed2032ed4457bb68528ff4481973b4d15f38430. 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/QZGLS1925151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5520d9565ad3051e2b87dfd86f69f7e1607e01af091ecb73d8c9552512236c94. 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/BX7MG2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5678683df3fe8e1092dfe7cf27af364d674dcf3c855f94bc38084cb543f8caf. 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/QZHZ41989685.