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 0x0844a2509925b275a9822a573ea2953ee2c14a373f4985635c228e65a53171ed. 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/656c44de-5810-4706-a5c3-5b9fcdf9f137.json and https://artists.proofprofile.net/proofs/artist/656c44de-5810-4706-a5c3-5b9fcdf9f137.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Geef mij nu maar snel je hand (Radio Edit)
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 0xc6a50c3bf61e4a29e08c3c5ffae42817679f713c54283619e20921c7f4b89d4d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NLH3L1600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc923ee98eba675aeba5c3c743aeaca8e63adc54daf7c0973af7d1a3c4b11a99. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/NLS7B1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea92dfa41c1a217e411d5d9cf36037812a704286d065a1e3e35f24f270a6797a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/NLS7B1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6751edc5e70b35b29fd7eaef5dda230981d0c37345e641724860e4bb844c5bf5. 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/NLS7B1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0dfeca15d02a3bf67f2276b9f1a0835605f0f1a1699432f1ef9dbece71a601. 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/NLS7B1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246ffcef4a41f260008a2fe6849633e801b05a2f7573ee7248a4889be296824e. 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/NLS7B2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2f1e99d06d4d5f31af0aadaf46e997beda6c65453756d26bb28ce5ccf427cc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NLQ272100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626b6641738296b8071d7fe83d8c262d05c52186e6f3cbfcbe50922fa5c48b6f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/NLQ272100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e536f74e9231c72107be7edd01e7ad5549927ff8ca90531b23a51f76070e39. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NLQ272200064.
Geef mij nu maar snel je hand - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd2922a616d81d89532c0f830abdd2022eba42fd9a6fbb04c15c37941893cf5. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/NLH3L1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae521668772b585378f558133365095f21aca156f2abeeee20693b00751d75b. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/NLQ272100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626b6641738296b8071d7fe83d8c262d05c52186e6f3cbfcbe50922fa5c48b6f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/NLQ272100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420cdfdd1af281c303211c92683456fa367feca12c90801ebf0a83e965ba36bb. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NLRZ82500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34c839bc17aaeef88f24acbd8fb97c24e7af0b2a02904014898db98e91f6aeb. 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/NLS7B2000003.