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 0x118af6fa0d225d1a1caadd41eb88faf56eedc14b6cf48d7a4308be52fd7b2eb7. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dbed2a4a-f66e-4c7b-bbe7-07cf8dbbb812.json and https://artists.proofprofile.net/proofs/artist/dbed2a4a-f66e-4c7b-bbe7-07cf8dbbb812.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 0x1360579b7dfb982f82c8c4b881f313cfdc9423e6a40abd5ac2994c9f79f7f16f. 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/USHM90919203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18e6f1d38be62277dc48c50a7d0d2d6193d58e02faa629429d18a80d3245cd9. 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/USHM21157459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a362cd7b9873fbcaa389c5665eac2a061012061c63344eca0af3d26fffd4f2. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USCGJ1368736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00a1d98033662de81975cab3ed2ac3e80d5dfd07b7da2dfda0383ab17bca08f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM21579933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8335dcbb61bbe5fcfe7bf1d6c97d8287e73af6d724c27e8abd03465289f78135. 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/USHM21579938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e245b0cb21682520d25497938c852bd6f018bdd79ace8fc88ddb0660fc0ce1d. 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/USHM21579939.
Conmemoración (Bonus Track) [feat. Bocafloja & Favi]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc348864862671a0c26e440c3b9b03bfcdaee08726af595a49a6b82a4634956b1. 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/USHM21579942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f060ea37bf0bcffe9947dd88e1ffca2d931ffa6adb0181fa779a925b61f9dc. 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/USHM21579932.
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 0xbe243919a3b2c36c37f1cff8c73f7cf541309666b3579a14d7d83ccccc489a3c. 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/USHM21579934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ceb262b8005f2a8af73f7c4bd7c32c4a79681be619a58c29779b87fec11a8c. 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/USHM21579935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05601d398cb7ebdf14a60754ea8a5784f10cc8afde7b87022211a38b7189ca8. 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/USHM21579936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8c397f62a54c9aeecd85be8536125f336260172702ffaa46121a58a82dde4a. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USHM21579937.
Recitando por los Codos (feat. DJ Tillo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d9fa7c9f62ac82030a2a4d288c320749d9421faea9d063d9f08da94bd91b4d. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USHM21579940.
Altas Montañas (Spoken Word) [feat. Me-Stair]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad43d9d981df91dcf5499b5240f1b0d78e6c84492e43c7469eb84b8a14e86ba. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USHM21579941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89ba7341aa51f7ab57763ad01dff74c094997a12a659b08cf5fae417da06576. 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/USHM91315189.
Patologias del Invisible Incómodo Antología (012 – 014)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa286bc36b0c6425b54abc79d004dfd197bff1dc49c1189103ed5e4159dd7a044. 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/USHM21527701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08f304e1035cf7796d1b9bdd16911c42269d2484b196da92abd50c0d08c23f0. 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/USHM21527711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0454d9b91b653276d9fb642ac5064243ca0b55d303e6e4dfce64e94e5a6ce81c. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:52:18Z), 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/USCGH1219636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ee701270d116061dbe007c1c5243becbaf19bd9e56fddcfda7e0e768a19252. 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/USHM80972851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8e02a2b27028958d4fe1980dcc1fc5256047b52d43f0ca5aebe65e2f2a3a9d. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USCGH1219642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe554a057bfe3f537a739dcad6ec3df35bb5c4be8a5ecc6c46135c7a93ef8a6a0. 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/TCACY1734346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa59259a8278c31011c26ef4c0221d6e2675eb2c0ef9bafb8c82f1e596f105b. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USHM21527708.