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 0xbc9fe02720be515926e7e32fd06b98e99531e37e033b6cfdf7f7cdd21d7a410e. 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/ccad545b-421e-4802-98fe-a66c163acba9.json and https://artists.proofprofile.net/proofs/artist/ccad545b-421e-4802-98fe-a66c163acba9.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 0xbd452335721d1158bcc00245b1b8cf864b8fc00b1b995d5c21405915302eedb6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEU601203834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7190955d04f68fd01a05c48fcb1a0807d37c467a5f3ad7c8ec7726ae14556efb. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEU601203839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e07e453c31aa8df886a5087d0c353ff6b12ab625d7b0d77e3a2f1c57bb4c7d1. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:03:17Z), 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/DEU601203840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1666dad3b02f454fe1f4b83fb93c26b263a3a10ce1f16d1adf64b86a44b922. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEU601203842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e08c4f55062c28d2d37b63b8d3ceace0a2425d2dbd16d470ebf824b90ee00b1. 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/DEU601404943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49841195ba94b698f163718f3b2200bb7b5ae18531a5f21b8255688791a81011. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/DEU601404944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c944b3a3a41a070b7386f4b64f431a78af46c595e91fa2a5a94e634516c2546. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEU601404946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f81bdc47c5b9e9d213d2c1bafe48c289c87c0b2515d765295ddb5cbff514bb. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/DEU601404949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc0cec18a9f73b6347602769daa4c1f94f38f9f6c6230d1e625befdc8a8277a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DEU601606589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf3b6382fae0ef021d1cce539eef786403526c7cbf07b60494dbd4c4aedcfe5. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/DEU601606592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7e924d15cdd7a580e07439dd8ba587166609f83a4a98bbcc76a7b61385c6ae. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/DEU601606590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca7ed8f3432a9a7588fb586154244870fbc4435f7942e8a2f346619ca03cd01. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEU601606593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e31cdb6c554cc7565e6f7de3f6c894124181a93151ba18ddf0256e22a0c1fe5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:32:22Z), 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/QZFZ72059310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8683ef6b4279eb0a16f24c3a9c2492b038775f65334bb56faead761986651f. 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/QZFZ72059311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb695d8024aa9be9493e7f124739dec23d28923f55088c4191c364cac6ab5d42e. 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/QM6P42178355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ddf0a047ce40efd916ae1875d640a9d20a48045d0e9064cbd500d42660ad79. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMFME2170682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4599d764e6774fadcd269ec003446e7a812b7dd0df3364aecd65ce1078ec5814. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QMFMG2349836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4599d764e6774fadcd269ec003446e7a812b7dd0df3364aecd65ce1078ec5814. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMFMG2349836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846ed2eb315d0582b3776167d67f26550cb288c04591143fbc7c33341b10fe35. 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/QM4TX2430942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b4307da728ac847ed5383c20fa7e03f8113a7647656a6904fc2381e457bb41. 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/QM4TX2430943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c5e7344d3ac563cfe5635f9576afcc23cf889dd96241ba65efc80644dd1f2e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QM4TX2430944.