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 0x66619759d2e4a5538532afb303c0f458c0a0cf90898961d87882189afb9a342d. 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/5e344b49-a636-4584-8ad5-927c59a998b4.json and https://artists.proofprofile.net/proofs/artist/5e344b49-a636-4584-8ad5-927c59a998b4.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 0x3e29f2b1abfef9c18b435bfa5964b0cb32ed503cdd9f7f7dbae37f29f4498536. 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/ES05I2100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888e3f72a4d9c27df5f677ca41614802cb6e7ea6d294353056ff09c7f76a5c30. 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/ITS8K2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668f53ec4730dac76384eb702a158035cd756a072170057314c68025c52fe2db. 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/ITS8K2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c8eb6c022331d25163c3ac54aeea00a91095ff1c1837c9e653e6cbf78aaaaf. 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/ES5152300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817b1fba0cdb445a14e3e38e7044a74661e95f3539418446814fdc0687d9d760. 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/ES71G2410929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2d4499361dd55fa1e72cdcc2344eef0211417042ec9bf8c5cf5b701bd135c6. 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/QZGLS2007707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797fdb8e6e35adabaf5b34021d6e181c655c8724ec3b08e753045053b46dafc8. 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/QZGLS2070143.
Los Futbolísimos (Banda Sonora Original)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb838b38f0310ef6883429f1f0bdf1b35f77937bcc7162ef74a121a880a604e10. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ES84S1700514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde282976112306b06332196db7832f7660d2af771742df8b3db2f1f399c025e6. 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/ES5152000359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc0ebd4a2f67896c1cdd10143c46a6ac28998f27f6e4a44032fd93c677f2778. 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/ES71G2328984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a944ea007fd7aa08d8d8eea7a17aced9669c8410d8bbab2cb753755262a6b28. 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/ES71G2417219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc408fa7e1df1c29e191169a39662786789f0852ceab635b4cc6f8ec686f181ed. 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/QZMZ92178822.