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 0x70db74ee2eda49c28c6344286f2afc00496a6e1373f890449663a25ed541f249. 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/ddef071a-69fa-4464-8608-95d27bfe16bb.json and https://artists.proofprofile.net/proofs/artist/ddef071a-69fa-4464-8608-95d27bfe16bb.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 0xcbb707947ecbd8aaeae1b5c24466b1559d83edb5b4ca07d27a10970b115f8eff. 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/USA370580224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4a679e1071178230bac5cca700cfce82dc1d1814a3742d1f7380d5907e2362. 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/USA370580229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3e2fcafa606a0eea180bb7dd4ea178c92cbbc9fbd91db70e7d9bf8867bb215. 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/USA370580235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe369622db0544a792e0a5221106fd8dc3ae123983b7e05e00d2f4a81f12bd5c8. 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/QMFME1497604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf90a91acc95102123f2835cd3a17e52ac0239b8c18e06dc2bbb84b15f7ddf3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM4TX1552949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe922f3048e8990f571c8f8563e7572075a7b1aa40319b27ee84a02958633677e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM4TX1552950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c89e58479fb8a8ae7ca0153cbd922c77a256b301616e6977576c4a398c706cc. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/QM4TX1552951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9736029f61e7a4cb77ddafe02e1ecce6aeff3c40382161683f38b5a11ed1e208. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:26:57Z), 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/QM4TX1552955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398aeb94c4f631d96f3a42c3065a14705860cba0533c1fbadd6e2fd75a87233a. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T13:00:11Z), 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/QM4TX1552973.
Pretalkohola dziesma 2023 (Mart Inc. Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecacbe6645e324c8b4c6c27a91472c3176fe2225d5fba800fb02f1c4f1f57039. 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/LVA051000045.
Sanāciet, sadziediet...Dziesmas ar Jāņa Petera dzeju.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f65cde47a43558ff94fd4eb058c2c5d5e39b2e4ecfc21ce9889540ee141c44a. 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/QMFME1470991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bf52ab7900311c1642f8a6e8b8c6f57654b184c08f0fa6c7e631155bc2a19a. 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/QMFME1470992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713e53dff3b0009cce8837b560dbf97d13497c0de3566f3e06c0fe286d9dd848. 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/QMFME1470994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef08859f93cf9518e29a6086b96d789574e83b1094cd90fba2583ebb0416078. 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/QMFME1470997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6825e9e8073804a6c568615afae731ec9a199300a031b3d69fbe1ebf4c6a2e6e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:04:45Z), 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/QMFME1470998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbfd529fa0fd2e5657f74a2adafb7603bd3b89bb6d05357a6bc382298157fee. 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/QMFME1470999.