Freedom is the power or right to speak, act, and change as one wants without hindrance or restraint. Freedom is often associated with liberty and autonomy in the sense of "giving oneself one's own law
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 0xaecd77e54564865098a1721c00f100e1d288d3698cb61b4a7a119ad0b2d5a34f. Chain 2 (Bitcoin): anchored in block 953722 (2026-06-15T01:21:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b0b0329-adda-4e22-9897-a3de0d3a3ec3.json and https://artists.proofprofile.net/proofs/artist/8b0b0329-adda-4e22-9897-a3de0d3a3ec3.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 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 0x86a1a3cc6c549c9597040a1499ce783be8556b55c2381685edf9bb9a85a9f2ea. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:03:34Z), 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/QMCE71300552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f673054b0ecc7fb3b8496c948ff0065b57b72d98edd8f46359c626f17319309. 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/QMCE71300554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6909b1b41491aad8c099dab25de681eaa4220c0b741e4195fcd6b962dea43c57. 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/USQY51515278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f18df5318bf1e38ccc21442859434d6702240309f29dad211455da52d64959. 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/QMCE71301535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9295b3d26fb0555210698796fc0b11740bda165c3cc73ba6adc29d3ec41a2fe1. 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/QMCE71301536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0edf41cccdc3c1d96446527b0a7748eee30bca6c74b14a5cd168d34d8166fda. 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/QMCE71301537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa623b9f58aa2ad983b8764580e1e60626576d367f84e179c8847089ef32ecfbe. 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/QMCE71301538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1cd9128523618af45344da6c0d05658a44b0b992592324c47776ce927a6014. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:38:11Z), 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/QMCE71301539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7aaf5a0a9f7c71d30e3c7c7cc7b43953130a2d3461264dc051087b819866ae. 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/QZFZ62475600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffa40819e33f7d2af9e28a5e1371ff59643e82371e7e6f94669c92ce3e0ba0b. 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/QZFZ62475601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd44b4653f81b9d67cfeee37c95093ab8cfcdd6ba66a35bc1ebd3e4d9df2747b. 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/QZFZ62475603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76037bbe8b6a24eb79d90592e782232928214b6d79c1fd3845f267cb008cd536. 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/ITZB51810193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad07249e0e8251fcd13e7e29a92fb7bdd87ec291afff4fa92783b15ea56818b. 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/QZES91874850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c041d84cc832f2db44b03f75adb45c6c22e7652b8b6042465ca57f998f00548. 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/QZNB82008101.