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 0x34bb103cc5e6d87ac0d7288588f219021778c207fa6f70f0c47cba9c76725dd8. 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/52cdd389-977d-4212-bb81-7be75fd8c741.json and https://artists.proofprofile.net/proofs/artist/52cdd389-977d-4212-bb81-7be75fd8c741.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 0x21ced3bfc85fbc7b2e80344759255f806e703222af6551110f10eb31ef9407b3. 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/QZK6N2032265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57092416eef3687666c03bb254ccc1823624bc51a356ecef13bf8b992560a9e6. 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/QZK6N2032260.
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 0xfaffc8b2112fb0f2daaef99343d80995a8e221c6b5bfd96d8d4b8a904b201faf. 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/TCAFG2017210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3680df495d1cfecb6c316cda179be5a09c1bd3a60c7ef5b3aea02193ad9b228b. 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/TCAFG2017217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117dde752db28b45f0ea42eb6927dc9a7c12296d785750a6c479834b5772ea33. 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/TCAFG2017240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7321f8ede7009282f29d5aeb580e2f47b8cd49a68613bf6f37f9b0fbbe4b8d4. 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/TCAFG2017259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7787681f5616ba2479c4474ea8d70b8ca2066c337f2c51a572c78d40c356fec2. 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/QZNJZ2157759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02668a6baa4387231ba3a0deb27f3e587f7438eae1f7c2a2be86971aa291de64. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCADR1828046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e7bb6fc852270d55e8566cee860ce0571089ba8af2ce8f932d287c68ec765d. 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/TCADR1832351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bea6b8cff6026d78e8afb5b976a8954b756d02aebaf99205baf8496e24b637. 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/TCAED1953370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bddce7a7b82e11c72d6ac4ee4873472b0bee9e496b1b92359632d1c4a0eb60e. 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/TCAED1953390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9974e3ab2183c5e4f587a8393217cacb0254555d2698424812b11593f5a8a4. 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/TCAED1953445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652b3f79b99b7a7486cea0525af2e460194a951926a1189e98a094e6ee07f2e5. 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/TCAED1953460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ddca694ad8ad8e72aaad4dec89ae572f3bc1f3229d5fce2482431964b51cb0. 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/TCAED1953464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd873dfde48dbb1b1171152410b02f97cae8fc850cf0425bf97dc20c8ee4672b. 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/TCAED1953483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94153bdd8b0dfc7eb06b282f871f20693c2590db16927ae13341ce169c95daaa. 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/TCAED1953494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7496a842458b6e680de46103c419844d011aedc057254258e1783b3a893798. 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/QZPLS2185838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e3fec6a1713a6534ced4015abc34cce84b81d54e5ea70c261d4cbcc25ea7f2. 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/TCAFM2191983.
La Dieta del Murciélago (Instrumentales)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fcdc3a9ca240741bd0822881f4573aa02d2d6c324941c0aee4e755f331218b. 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/QZNJX2468732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bf12fe2ffcae34b161733ce80f171ac5a56ced8dd7487b27b872ab3687da87. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZNJX2468735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39293c536abfb22394f678ad9985fedbc1f7b0be8a96d328cb86c31b7237c4f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TCAED1953381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0ea14368b89690fa299be0f779424cf383ce4822d66d945f93bc786d7fede8. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/TCAED1953406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb1e3eb3d6570daa0a2fbf64d6ac29eba18224b73a09e932630d25de6816e57. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/TCAED1953454.