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 0x45dc46fa711bea0afdbe245c99a7f098250daa09a51f625f5a9f3fcdfde9d612. 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/b626bfd1-0804-4e5e-91f5-bc9b15c67a43.json and https://artists.proofprofile.net/proofs/artist/b626bfd1-0804-4e5e-91f5-bc9b15c67a43.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Füli Gér Album (Műhelymorzsák Mixtape)
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 0xbbcfb3e1b10ca7f1928afe6fe51cdea42b1d8125dac2680ab19515ecafc2e076. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HUA611900862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323036b18741c33062ce929c625e21eb0eaf429e18734feb3cc1caa55183fa04. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/HUA611900826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026aaeda281d92896e7f941712bd45faea24cf68e4288bd72ff5efca1410607b. 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/HUA611900805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92c589e9acef933c2f4d65041d2f7f38bf8c526b48eff68c83efef5b570e666. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HUA611900806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa96d7dbbc18f72c904a8d294c2e83ac5df5a781cea9baab165145dbc2cdf50. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/HUA611900810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a7c2af04fae312121e7e3f0f67be6a56e359d37adc21d99f348bae5e94cac7. 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/HUA611900818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417c9a3a53b9fa1e9ba2f9eb88d0dcd33557a1a3248a63036346264ebdb038a8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:21:24Z), 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/HUA611901902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aba446b55287ed071a4259a175e77ec1be043b7e1d2e8032991379bf8a26272. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HUA611901903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21259bc57294713909fd7e908cd485d9311997127e730cccf1324ba0087f0c0. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:55:05Z), 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/HUA611901905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df02d4d15bc18b7f8d1522575593b9ba43f83bee80ef7c1afb2e711b2162db2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/HUA611901906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8765d57d008011745b864c1c4f64ee4a4089da58d4ec0945bfd1064c72406b65. 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/HUA611901908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ff4183d9123eac0c118fb569d5e4281d49617ccf32678bdfc170a0b04f6e62. 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/HUA611901910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503145062ab0720c5e664ce6ebafe2b546d5b9d46b6dc51b06e70a97897214ee. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HUA611901912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ef6a9adde44dd63ba0eb1e00c3c08f922ae38a7117a2366c9e0f400ee9ed0f. 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/HUA612403952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cacb5be71fe13f850acb9d575cb2ac659f383356deb37c32cfa551dddb4c3b8. 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/HUA612403953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538423b43ef6b659ab2eee8eb0b2cacbec3bb728063e9c57b9f319b85cfae9a6. 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/HUA612403954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaab4846b18c8396406d79184d27811f0a9c5c01f769d03a153a5ff50136b0e1. 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/HUA612403968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e9c480de0985920313c18533f5de63cad7b013e91181933f0029b00b5f5468. 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/HUA612403970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5441d34c039643a1235640893803561a8ef847ebf2463bf501696bca48392a47. 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/HUA612403971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128650c04e1234564b1c319826d90ea6c5f96695b5fc3bb98f9d8e3d85de4a16. 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/HUA612403973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a925e1191da4322b7c58c64537d48d78f10fab2037c71200c64dc5a3962f135. 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/HUA612403680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b17684342a804ef141e25503c66c3aff6c467cca14491d9f61aa8c0e852a84b. 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/HUA612403976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d3e4483fa8b108f37f8aac69d14a15776bf3599b090ba84c8f714bc054a7c8. 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/HUA612403977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b123db7e8b408dfa66c4817f9ac7f893ffa27218bde3273edc8022b09a20e0. 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/HUA612403978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05af4f3d46cfe9e4340460c227102b8abd9bdd9e845fb861d134e5eed788197e. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/HUA612403979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f911621c967807a1d8223753b3f75e25a33ce7b8d61b6d78cdd6bb64d4d042. 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/HUA612403980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450e43a2a79f1981c31eff09b7381804be5e39472b4e545fb1395a02461ff36f. 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/HUA612403983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd7ca44a1a39ae8d2511622e1c3abc05fedee4f7f2472a9f5049630bec2036c. 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/HUA612403985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876e0a7a3a9a1b86376b24d4252618bdb25861edbcb8aeedb9a06e2e5c2e4f38. 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/HUA612403580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e3a29ccd0cce6bc2f34cb5310c5441cd7a190d4f19019f5db06c2184938eb2. 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/HUA612403987.