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 0x8e60a89ba6b3415d7d8afb9f2fbfe057ee28e691498fc95c87c8112ab3debd54. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cba349e-8461-4409-b1dd-53fcb45a9e03.json and https://artists.proofprofile.net/proofs/artist/1cba349e-8461-4409-b1dd-53fcb45a9e03.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 0xed538630cd078134aefecf40adb17da8fe70c19fb086fab8e519f5cd5382d168. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/AR3692200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947a1bf2a82309881ae580efcc0a856cd912aa661beca78f459a6400e1756692. 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/ARY4P2303000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d8756c2646f201da3527ff68837c5b2ca50f7b91035bed72cbd816795d5b3f. 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/ARY4P2300394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf44757b4b05c55c1bcba6eea8d6dc2a2ea44b213fa117c31626a93a492255ec. 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/ARY4P2300454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2300514fc568c7763cfbe0c6e6ea292ce788be364b48b6766ca01c198be68747. 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/ARF471100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfcf839fdfcdf68358ca726e16f5d582865defcee623bf51af6c496b5c7d87e. 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/ARF471200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33604ee7e968d06ee95e426d8d031375391c454323a91106e7fee24b7bffa927. 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/ARF471200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d05c46b758d49d6fb213c5bb40ef7ce82fedb3dc7017dde40601e5ba2af7be6. 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/ARF471200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68549a420d1ff9de100981ff1ace712c146984d168d26fd47901684e1c3eb9ee. 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/ARF471200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba1ec81c95f6dfee3d4fbd7c31212eb536f90dc94d88a3ce2b58d7a942d6002. 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/DGA0M2316692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba67d1e8421e7b9d1163dbfdedef2940e63900a316b944beccbd4b4dda5eba4e. 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/US7VG2341662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b07255b611eda058c8688bb227ad91ae80d20beaa169cfa7427480b8965d72e. 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/QZ5AB2347166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3155c465507717dfc1f78f8012e5144536e8f9b38c4af5a747d483e6a4ea64. 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/ARC081500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bade8b6adc135e7e1baff21dc98b1eddec787c49cc3136e8ab0b6fa5a3c387d. 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/ARC081500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fba6be6f577e1637f01e0775d5ffc1e1410c416525f902bcf9e2c9b09e8421. 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/ARC081500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9dae740aa41e84fc4caa483bcb80bc66bdb3c8348735ab43d57e60a6c9d2331. 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/ARC081500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa40003c7ced9e92a419e3e211806d1a6bec3a32425fbf2855528dc5e4dd4543. 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/ARC081500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7624120b5254a428b7cc5e06bf565ba1d564cd3be9081cdbbb1d85b36887fadd. 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/ARC081500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a00e96d890c592fed9e226af981c0099b2407eb330b019fa468042f751b82f. 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/ARC081500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905dd2152caf359d5b7c4b578b6164ab3c72fec981eaff85efe21881b04cb399. 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/ARC081500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d189e592071b243be52cfb556f5af7790afa2f379b5392b2f78dcc0f96ed361. 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/ARC081500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764762555c2490bb3d85b4c90d137e0a73cac676dc6863322230cf3b16bc0c22. 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/ARC081500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d0205534e29e83700a9f510cdf8bbec1a9f24ac123283d3cb0b560912707c0. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:31:21Z), 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/ARC081500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2b3f751f38332c684d37f349ef2ac8544ffe5e683e79e8011efd7ecd0f69a6. 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/ARC081500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb74c188f56390098b926cae4227cedf7bfd46508bb1c6263c520404c9ceeba4. 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/QZGLM2197060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff69c07df78934002f7643bcdf87722da1051c16742e6077ce99a6943ab9312. 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/QZGLM2197064.
El Árbol (feat. Pablo Pino & Franco Luciani)
Canciones de cuna para corazones insomnes