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 0x2c2cfd1cd52466888a56b47dc804802e54cc1981eaf451a5378d6ca24da3a0a9. 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/e439994c-c46a-4c4c-af6b-e3758459727b.json and https://artists.proofprofile.net/proofs/artist/e439994c-c46a-4c4c-af6b-e3758459727b.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 0x55de881edc8a3859aa63accbdf8535a133ffff66342fed4473a770ded370b8e4. 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/UYS059900408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f06d2146fddba150625ff017f95a364478c2be32ca3901219352a0428d0630e. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/UYS051600590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a10d3af739c1ef4d0200f0024224170553dbd7b0df95cb05ed91fe7f6a6b79e. 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/UYS051600673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe706dd7aeb42c44694bf6ac18825847ca3c8e572aa44c909583a4ae89e5da48b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/UYS051600674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee14e913daf2a720ca0e77d73e7fbd2ae397cfcda9c24c6d904cd5320886a68. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/UYS051600675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52aa6ac4653cda413487c5881c7f12f9ec3001b32a1ecc027438a30ee020a74. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UYS051600579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e2519e43c9f2967fc284d065da4ec3ea1e542c0a03f3120af83eab1c82016c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UYS051600580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af23caa30d61d9b53a4f2baad1e9c45f79cecb58b3641a10bbb87a2948beb32. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UYS051600586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b65cd61d9ad6f5016e1b00967a1d8e632f4f4904d7bc0623e5a1f3e14b908e. 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/UYS052300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c188ced558514552b76676df4c2adb0d69b14518ddd2717b1dd5636919359ac. 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/UYS052300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda861ac4a2b40267b8db8188592a948db7300179f00cfe41544bfb4392224a5b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UYS050100328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6fdae5e99783d0a6545c1d2f7cb4618831a9a8e40d6dc910cf67f302352ee5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UYS050100329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbac5450ebb76977d2ef33375665a2b01feaf1d12da3bd864f737ffe8cc33496. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/UYS050100330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5a60b88451149fe4123281887c8ecd30fcff116045777e33219ea9870b45ff. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/UYS050100331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec90eb17b65978ba845f1b5582e4230ac7eed332071b578aab4452bf5cc49e83. 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/QM6MZ1414863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4f988bcda12bbe07abb2f520b6d312ca3f20dca5d09526962397d7a12c004c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/UYS050100333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95237af90972d8ae7c7acd01cc695260887b071e7054c43891fe55629b328d2. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QM6MZ1414859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a92278b93eb4f85819f3f6f01eefa4b69f7a607ede42cd08fb01f191eb2d78. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UYS050100335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe94c897cc5d8a24762319a24ad29881649260d409504be3ffdd420b2a60b703. 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/UYS050100336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7cb89ba20276d40d01f5df34dd5f9e68a1ec74e18b7e15b9961df10f647d3a. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/UYS050100337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c16c6dc11153219a531676042cc5bfb232fe2c3b73c79c0d5e2d156cc79b3ac. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UYS050100339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92a4e3d7d21ca15ab88ad431acc3d324445aa8196fe7b2aceb267b782742a2c. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/UYS050100340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea0efb3dc878e83a5b9df6dd9868656ee682a5111d589305b2efe0bfa3bfc0d. 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/QM6MZ1414854.
Uruguay Te Saluda (Edición Homenaje al Maestro Donato Racciatti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b224359e81eed97d3070783e649b099a79394a2ce1d23866cff29bdbc966dd7. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/UYS059900405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83830d20a3f22fd42efd617beacac4395e7f48a34c62f589b50a4fcb078cb08a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/UYS059900407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55de881edc8a3859aa63accbdf8535a133ffff66342fed4473a770ded370b8e4. 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/UYS059900408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecc5afc663776e23d8adfd1f5fc982cc376faf8b37c442f06fd697040936292. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/UYS059900412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599319718fe2d89c88f4f6163e5ce292e0efd68f1a6464c8b51c6e2b29584a1b. 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/UYS059900413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e17fb3f8ea338bd148feeb875c1e1d98319307e4409eab17d57dbc977d8ec85. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/UYS059900414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeed2e53a0b5628b31ad3dee1d8633672135dbc52ddd8d7cdabfe7c051c05153. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/UYS059900415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599d8fee44eb389b3e4124ce7104514da312256760213fb020ca9a45e4abb8e7. 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/UYS059900417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fad4259e42bf852071a3331f1588fcebab3b6bbf246e389df46fc59a706737d. 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/UYS059900418.
La Historia de Donato Racciatti a Través de Sus Tangos Estelares