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 0x127007a969db0f6187bc3f9d2cb0adb10c8623181ef54bea01cd5786b0b1615b. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6eee9aa-c29c-4f52-8076-1b64c5d31f6d.json and https://artists.proofprofile.net/proofs/artist/c6eee9aa-c29c-4f52-8076-1b64c5d31f6d.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 0x2b5888dd30bb1fbec62343ded36c521c4f37807605c208bf67046da0bf84d490. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/LVA101000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c77efe14c352e995f7f0ed566a59e01e99df57ecbef7dce96d4cdf95b39a68. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:08:39Z), 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/LVA101000240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec7637be9cbed3ac5ce4ac42934ee2a9d0f251c35c22b50276017456310d5de. 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/QMFME1947323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842f2cef57f4d6b2809036cef6bf23c608fb6622307b25e1ab624923232ec847. 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/QMFME1947321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bd27fe45daeeee847c8a63668394f1a83940ec486983730fba80b750a092fc. 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/LVA109700201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4914a74f9ee876bb2f3d52223516a274ba8a29bc580002cb595a6c75e56b506b. 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/QMFME1947322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0998180cc76f052431e634367692858545c1d93b01fe7e583dcbf5ded864f121. 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/LVA109700194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc233412ef578d046cb1073644e5cb1c703110def7f2eb8c3dc234dcfac193b00. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T20:33:53Z), 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/LVA109700191.
Lielās Dziesmas (Jubilejas Koncerts Dzintaros)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde468b39a521b900acc76a837cfe8b3db7b2b29e58ac42b92af50b6e6981d2ea. 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/LVA101100197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f8e430157577ed1fd3938308e8063bde124d15d60d692537f6a4269d1ae7e9. 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/LVA101100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9561bdc70724eb1a50f65e558247b7bad0c21a71d7cd1c6435f8aab609d258e4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/LVA101100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63b9759711e1e8e398f484b64a620b9a1baeaa649beadd5890a840c07e676d8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/LVA101100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7ec202883877df086e8b4cb4f62ce2262bf3c5817c3da098ff8d64027f1549. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:32:48Z), 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/QMFME1947324.
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 0xb92f345c2777a343166644e29be472fb671c95e9d9970e2d0ae5a89567a0852f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/LVC100800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2360f7c275581ff2d8566a2695801c7fbb50d5f43eb3c87a3015cd33428d86. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/LVA101100199.