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 0x9c71f704a69f0871dda5110fba0082d033971bef66a83630a1175b0215c52fe0. 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/85fb315d-9232-42a1-bc3d-71e1f6ef44b7.json and https://artists.proofprofile.net/proofs/artist/85fb315d-9232-42a1-bc3d-71e1f6ef44b7.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 0x6b612189ef017777cb5b5b939a03ef8861a9d59a2a369409963e51b6aab405b1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCABZ1406827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd72d338948bd245474f0883fe73514315ed46cdacd146e1f8bd40d85128a36. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCABZ1406832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd4125e9a20be07339926e67f2f73d49556f08ec4963cb39c5f72ca8fbafc29. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:02:06Z), 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/TCABZ1406836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51706ba3ccd4099d94b22408d7953486e2e2368d384303eb33750ed8ca80e888. 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/QZGLS1961796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e7da43d0b2d1f57ec69174da520056f0b76c032d14083675390d28ddc723d6. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZGLS1972323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ff0356e73edc0c9e5d3a7d3b041cf78c0d2495537a6d15da3e5dc7a846bbb7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZGLS1972322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4888a5d40028703c9136928c990b218870c782e84abd340233feba9492493a25. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZGLS2155592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa244954370b0ad0b3c33d7fb3d9a06c2f1578eab0e199e9741a534a370928cb2. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZNJX2087243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e33eabd561d80308539aa7aa524900a903ca3806c8b95ae3ed741ce962affac. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZGLS2155744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661fcc6b6ea1299407fc47d72f1c96757716d717f80146a96e38f0ad2a5f617f. 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/QZGLS2155745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303f6ac2c78d7f79793df9544ca5cf9524d0c97623362a52c5ecf94b4b4b9f88. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ5AB2173396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd5dfcb68563a09afe4d278a97f94eb9f7e03b3a642a62d4d30fbf72b14901f. 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/QZNJY2155895.
soñé contigo - trending topic en tu cora
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedec32fd55064b9ddfbc7fd5932a44c1d8adbcb0d728ef7fa6ae0ecb7423b14f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNJZ2104033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca367ce31a0d7c2aea1328c2cd09383cb5417c0dc58d520cbc30146de865103. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNJY2156105.
Mi Lado Más Frío - Trending Topic en Tu Cora
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af8fef7ef51757258924d074da98200d05dcd4b52162d2e0caa354338b151b9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:13:29Z), 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/QZNJY2156108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd5dfcb68563a09afe4d278a97f94eb9f7e03b3a642a62d4d30fbf72b14901f. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZNJY2155895.
Soñé Contigo - Trending Topic en Tu Cora
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f19a7e26d2d71400f5d890750fe91d5a6cd9244a29110ca0ebe0c7eec3bafa. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZNJY2156107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af8fef7ef51757258924d074da98200d05dcd4b52162d2e0caa354338b151b9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:55:03Z), 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/QZNJY2156108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44619f4a55388135d86b8b7f9e0598d54167eb3581e8daf61a8cf107174198c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USUM72221392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbf40c5c9348732f576f7cad272b4b3965697e59378cec757e739513f2920e4. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USUM72300510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbf40c5c9348732f576f7cad272b4b3965697e59378cec757e739513f2920e4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USUM72300510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1de93d089df64cbbe74f79d787b13302812fc43e755cada386cc4e3ddfe923. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USUM72221883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3c349b32b23436054a27d631d104106144d55dd48acdbd79e902d6b13c3b4d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USUM72302411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d31cd03631b44142f3c5c866997a91e93bd75064b36d94171fba9797785d399. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USUM72302412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b059b7cd860be5f0a2daced7253d061eb6ceaaea44c39de54790655a952a05. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USUM72302415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd010395d2fcd0d36efb0a07e18de55a2a7880f9af969843a9df8e6f5f89dfb60. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USUM72302416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bc388cefebb95f2306a33cb4025a8bf3696fcf9906f1e68ee9a5ced5c6f895. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USUM72302417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415b5c8da195924db851996b27f7de39816249476071b43f188751d5437c0cac. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USUM72221385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44619f4a55388135d86b8b7f9e0598d54167eb3581e8daf61a8cf107174198c. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USUM72221392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa358aee761123d546d742199eab907d978de1dacca90725146d391e23e8d0f46. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USUM72501995.
Lecciones De Una Vida Cagándola En El Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc3ad0b6d96f6ce35bcb407ab68708b04e7fbf4d80ba023fee20f8551bc88aa. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ZZOPM2104823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc3ad0b6d96f6ce35bcb407ab68708b04e7fbf4d80ba023fee20f8551bc88aa. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/ZZOPM2104823.
Recuérdame - En Vivo Desde El Teatro Metropólitan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a1788090392180e76d4584d3c9c28d8cbd57f11ca6ac6fe20bc379f079e714. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/MXUM72300690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b593c88337d8afb76d94338401e06512fcb00e8a69be93cc49cded46edb0f06. 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/MXUM72101720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528dbeffaafc68e45f605cdfa0fd6b5d81cf926564f8310f6b9b6de2596323b7. 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/US7VG1912739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901ca20121872591c34028bd31d447478d5a64b387aa94c664db539788c95bbc. 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/US7VG2006044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901ca20121872591c34028bd31d447478d5a64b387aa94c664db539788c95bbc. 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/US7VG2006044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bb7324ddfccd3710747ef3fa2978bedd6b520ecfad7ced743f530a6263d29c. 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/COAGH2300026.