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 0x816e56c6a52997f3464a13789c89147498b28cc6bd693e17169202cb850f9ce6. 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/61d4b502-8adc-462b-8f92-4c5b825dc6e3.json and https://artists.proofprofile.net/proofs/artist/61d4b502-8adc-462b-8f92-4c5b825dc6e3.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 0xd4a6daaa055e6d1bfb45a9971ee97946d092885be935d11ce2832991496bad56. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AR6B51900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd017807da16fb9fe797254b95a7fb7940a03179edf44a8775fc6160970a8f747. 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/AR6B51900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8525b97afa4ea237d4af140554bdccec14d9c1dfff09b26d2cbba74e056f6915. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QMFME1967255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423693b6158216c108a4251240825a1d463673b0d3837d6d047cc69e970dfb8f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AR6B52200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14365400ba55e1c929ddd3ea792235a29d259d1988c98d15a53e173edbe9d1a7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AR6B52200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d4a84282e1b2e7f633d4e1bf886fe837a6a9fb149f3c4bb91082ea10b13bc5. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:47:05Z), 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/AR6B52200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581c9cb40c0950ef397ca91454a277b7531653fced98f6c5df91b9010a63858c. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/AR6B52200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027ce5331f8616c911ea0224c5c13c7fb3803af6b11b72ff8412aef0a3f23035. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/AR6B52200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c5d4f32af6d79e23b040054eead4bc4b5d5bb072b8251faa9231ed27eda5c3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AR6B52200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b0dec39c43b9ba41b864fe723c69bd3c853614881cee0fc7efa089e31d69cc. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:04:17Z), 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/AR6B52300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c13e2f7531b8d07bf6d5b18e0e2d9a1ed036dd7bbd81aeaefab05b4e3c0a60. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/AR6B52300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6989912e360d3e7406057e17a5fa403d405e337574c96aca6e68881703d3bf22. 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/AR6B52400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc360ca42814197b6034e790644fdca02f49fef36d37765aa55d08f7d7b059e8. 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/ARV7X2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc360ca42814197b6034e790644fdca02f49fef36d37765aa55d08f7d7b059e8. 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/ARV7X2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a1442f3923bc977cc89024067fd0573b98957443d3d0d204d562c71b772a37. 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/ARSER2000011.
a todo el mundo le pasa (versión alternativa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31356de96c81296aeca5dbd314945c992fceaac8e122849cf4f3b800994f8286. 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/ARUM72500090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e8f5f6b7731e185ebc34b18c0b55aaf8575d70ce0f3ac01898c145bef9bf55. 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/ARF062100531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed722ae1698b45d22c6ad5f0dd30c9226b102e026fe46b4cfb26ecbdf63b14ed. 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/ARSER2000009.
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