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 0x52986dc8da7f0d9c91dceab9633ba1e2c79fb41c411effe30433aaf556d44a13. 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/bc2d946e-21ce-421d-beb9-3db081640192.json and https://artists.proofprofile.net/proofs/artist/bc2d946e-21ce-421d-beb9-3db081640192.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 0x3d4535dc65e5214332bf82b4286ae9d130f1598ec31307edb2654160f3d7e50c. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/PLA247014364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9a075cbbb0c801b43a1c7f7c250112221731db0388501c0b820616c88e7771. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:22:57Z), 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/PLA247014365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088ce7deeb5f1c8bd28e9806fe0f7648e5e7410fae39131f9e7cd2aef97a54fd. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/PLA247014366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947c29cb62d2a3882dee435e5040259b566a0f3337b56f1d991a5bb57f48b360. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLA247014371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1de2c82a7f07fccc736d5a4b5584f041ea516d44ca32870ac1be6c5c13fdbb. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-22T00:35:35Z), 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/PLB961526809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc72a1d4e282f2990a2fc685266a31cd0858cad55c809af29018184f71cd357. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:45:42Z), 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/PLB961526812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9cf4a3552a702a6d4b64784f02c6e4dc3789263acfb827d434f6fe7941cfda. 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/PLB961526813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5337363ae22be416a3d94b164028dade303888c5a9e392711472244f289ba5e5. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:35:20Z), 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/PLB961526901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30be8b6ef8942f54088d2c3698b3c141d8a3a6f61cb3bb3ccab06109918e9314. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:48:51Z), 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/PLB961526902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fd14cd6447370dde16526abd79b4b2157f0c06d1ebc0bb992314f17544ac02. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PLB961526911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4237538bd524730359886cac7e02841bd35227f065be1b1af99eba0481acbf5b. 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/PLB961526912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf479d380eda94ecfe40894a421b46c0dd035313b58b28c3a470840905064074. 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/PLB961527502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9757bc9e930bc8b18c162b4d0eaa965451cdfa48b0bbdf48db2773d5c818da. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:10:39Z), 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/PLB961527506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190a112bcb3166e8d76fb00c697b676a073c75fd433a9eb9ede967a288e3bf9d. 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/PLB961527509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeedb8afd608497216532e942f7c32b797df30ef40be72afa191845685b839d0. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/PLB961426402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc553c0bb20ba8a7570381662fab161138ca5021ffc2f333f1c2b035da7ef63f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/PLB961426403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6237e35f72d53433c076d73a546b66942728afd02061cfb586faeef7203735ae. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:48:11Z), 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/PLB961426404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefa3cc540b124247b44b0dd6e1b1285e4bf2fd2091fd93408daa7c68c65e7b6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/PLB961426406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10d1ecdbde4811afe939d18226e59fbc297077260cac3d441c3d282a4684104. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:40:43Z), 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/PLB961426410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc82f35eee567df1ea99f37a7d2247e7b1b0f2316a5d3fd056c7e5c1ba486067. 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/PLB961426412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a340f0686d41d6da8dda3456cad852f394b5861d228f0aba4d8ae908a977da3. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:22:30Z), 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/PLB961426413.
Historia w piosence. 65 lat Polskich Nagrań
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f54c2a914d846194b4ed7faa492e2a75adec3fe2a24dfd114d285a76409b077. 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/PLA246208255.