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 0x61eab58e3145580aff4a68306627130b4245afa5b60291741acb30aed64888a9. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38cb0272-9984-4781-be96-f67b39198840.json and https://artists.proofprofile.net/proofs/artist/38cb0272-9984-4781-be96-f67b39198840.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 0x39252683e9510fcb6bce6aec6e2eea5e25064ef2c634707d7ff4881551694cd9. 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/PLF242209912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c024eb36da8b24ef7bdc06f9c92cbcf60a028ef000aee32af023fcccfc058e2. 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/PLI366864750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de3ff3971406bf48fde241e87ec6ac599c2548b0ed7a59de3ca0949f1cc4207. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLI365775000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4669e7b3a1ec59452047642035d9930042f1bbc38889515da03eb8a2c00799b6. 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/PLI366864770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4d00a23f10884b8b33451433032953c3180aead5d59654240dbe723cae7cd6. 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/PLI364126820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731b9c85e2c4cd403435d947cddd406b4467d681ca02ae7568012dedfaede753. 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/PLI366864790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3a6c4851095824d5b9ff3934917cd6628f763e31af712c502d0e1469d6b039. 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/PLI366864840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cdad164448aa71bbe3b01807f7c58fe045a8346c68487883f0fb80f3289330. 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/PLI361730050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc972d3928a52b99b84f6b809dfe7d42ad6eec37fe879d15492b39ccc67ba1b0e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLI366864850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0a2f07fae4d4e4844b0db8f00da7e30c6201894348df86e554e869f8b1ce68. 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/PLF242210502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49542576c8cb5174ddae650e70dcd353c94e6489aca221c49357626a4b26503. 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/PLF242209813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49542576c8cb5174ddae650e70dcd353c94e6489aca221c49357626a4b26503. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PLF242209813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa1701f21c34d90c526011127f03b02e6336809fc23b00c5f9ebc4f0be5a827. 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/PLF242209861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a455528ada650cdf9da865670d66a267e1b0204943369da7687fe32621fd92. 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/PLF242210014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe096eaab0b77b286a30667b673ec355f041a8428f02c66e9cb64999ca4531b. 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/PLF242210006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b3779953336b1f8336b6ab43fc453cb3fc378989ffcef8436168832c5efaf9. 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/PLF242210019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe679d2b0c35df0e1c61191a1591caca53ed1922f3c725dec16ebacd1c8fea622. 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/PLF242210020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39252683e9510fcb6bce6aec6e2eea5e25064ef2c634707d7ff4881551694cd9. 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/PLF242209912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65592f780478e519a6cbbf908f40ba604bf3cc34d3ebecf8caa6b7eb8e3e8cdb. 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/PLC062413062.