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 0x06d39ec21976071236793a7d590504e2a2ef62620759eac10b9f7f27d85d6350. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/013f9b7f-2027-471d-8926-9117f02e3e6e.json and https://artists.proofprofile.net/proofs/artist/013f9b7f-2027-471d-8926-9117f02e3e6e.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 0x3b2813d605cb0f422711e82532dc98685805441e2263455f32bff4790e5d00f0. 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/PLF242108470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7e21f54a861a4a5b01dfe722bfea5330622b6810e5b0d67f349c38fd54c03e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/PLF242007334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddd0245b5e76a5f32d53b3548bb569740ace6ea69e6f8087f46fd84f3b48638. 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/PLF242108321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a6b8af689badc84c6e6f6b631677b40cfe859e632d58e1c653a36d98569a45. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/PLF242107508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa3489487253d9b4a85a3aff0b34c8787da9e24cce2e318ea176ed15ec8d6c8. 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/PLF242007390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6a0838d8cc1e18a61c55a03095155452e45a277834cff84c745ca3efde28c6. 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/PLV402000824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6940759959be7449abd52f6a9870f50b95606f3b35acf56af75cbbb5b22e2d7e. 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/PLV402000825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bef0f2aa03913300bc026706b933ac99bd3402b0397a8b0454e076054564f7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLV402000826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ebd50beef6d4bb5e83135529c66834caf11d3a46c8e2037f7f4dbcf139ca46. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PLV402000827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24e09371c5e83361c39fc32d5e34a898204c528e8bd1f033b613b449a910931. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PLV402000828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8e68aef2cc4f78755fb68c070e6bf796d1cbf1fa43f158407723da5c1e9afa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PLV402000829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda971a76dbd97eb3896b02abd75b3cee62003df5376c383fa2c226477ad69cbd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PLC062421661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6427346e59643c7dbc67dc6356c3eb988f0d10122f88751de2c48b29d43bcd15. 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/PLC062421662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a63a255ecb562166d858c606eb28570f69214eaa6b0b2e6f9109a8122f346f. 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/PLC062421663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b495d27573c83862caf66f9e2d2b80319132d29d68ef588c4dece915853408d. 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/PLC062421665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67142ba81093082a3d746f5dd9ab29e0d2146850d21d4f976ba768d2f7324a6. 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/PLC062417050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d8d1dbc472e781b28dec2f75f7ae328bf8fa128f07789e0914133b45ce0622. 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/PLC062413908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d44b7e675d5fc5d7ccb1574be7cc431ab06267e87c6f878e2104c3b82765b5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PLC062421666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1240eccb80b354e8fa7a29f6786b55dbc0b8626cdca49d03d07b820376996d5. 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/PLC062421667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1697b482d3190c15ab764d8a5e789a449f949ff810826c89d9f9c0b9611f63d. 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/PLC062421668.
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 0x47bceb6202df80c2029adafe057842a849bf2c22b166565f1aca9ea48994e086. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/PLF242209860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1702565c82bb2d4866cbb0005827cd7ebd5d9603e7487d32d743b462f211489. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/PLF242210017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684918acb14f498af3f8f0bbad884d110bc48bccc455b2979ef369aa0bb1755e. 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/PLUM71900258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1445ac0796f31b8ab9c0cd2be099dd7604d20f317111143244058d04300db32f. 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/GBSMU5210284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3349bf9c5ddd07b276dd84877eba338910375044b2246e4e2082f6b7b604ab. 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/PL89B1900196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b15947d0bdc6e45441c274f6a18a3505ca0013c76df820e0188d5b16b3c852d. 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/PL89B1900200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc608ca758528e76552537a4e7326fc72b0f2a9021ffcb2675a6d49f9e76582ac. 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/PLF242107899.