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 0x625dfc2b92f2443bdce70773bb6cdcb42563881d3f222050d84724573d792ea4. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c69a201-f43e-4ef0-894f-0efc685c0b5d.json and https://artists.proofprofile.net/proofs/artist/9c69a201-f43e-4ef0-894f-0efc685c0b5d.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 0xf8e00019bcd7bb01aafae87e7f90b76c7a25f65df4ec80f1199137a2baf5a2c9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:14:09Z), 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/NL3GQ2100340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55539ed8713f176082b7d5f49c66e1dda6a4ee213996ccba82b446788e1e0b8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/NL3GQ2100356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3750d268aed4519543339a8403ba3e209b0ebb9db65dd3b52f80e13b6edcd6. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:19:49Z), 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/QM7282337364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71597400f95d657b2d1acc6709d6be6d134566d905299acd012b800376460edd. 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/NL5MF2101858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc5bed8d3a0266ba3860b0cea637b961de12ef42a9afc6c2d1cd52febdb7661. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NL5MF2102279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9fd8eae2058f6cce02696531c69d426dd53b2655061dbff2b8138c8198777d. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/NL8SP2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9b70ca40b4d80a2bcb56bcdc12c67cbf1bfc281c068b0b16ad7a9ba27ccfb8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NL8SP2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6eada9f53bacf87055b9410178076b88bea25ef996569e19fcc72f30a2d9d95. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NL8SP2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9fd8eae2058f6cce02696531c69d426dd53b2655061dbff2b8138c8198777d. 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/NL8SP2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d60671c9a459d4fd44377987c5492b1bc63a6fc18989cc91ac7026eae0f36aa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL8SP2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610be3d5027192cd8917c35b9ddb3106129bf4da4669946db52bca0556014ecf. 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/NL8SP2400068.
Klein, Klein Jongetje (Als Je Groot Bent) - Remix
Klein, Klein Jongetje (Als Je Groot Bent) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e92b78fd87febe6821df83988bf9c082b37a136c8447aaee19704496ba5203. 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/NLG662200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc1d7cfb3790aaf307d2f599e006538c7382107a2b50cca94fcdad93787db95. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM6N22438168.