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 0x312d9e567cf62d2e6e1f3abc0e96ee9e0d1b5bc90b985e2c74eae4eae3f09df3. 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/7debb920-37b3-40d3-956e-b3d1c5664a94.json and https://artists.proofprofile.net/proofs/artist/7debb920-37b3-40d3-956e-b3d1c5664a94.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 0x4a0c30cebf1dc9b62323956393c2d4954772908390036f8d995f9a5ab574273b. 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/DEBL61600654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672f51d89a49298d9049839b53ddf8e92ad31a398f33a4129ea75a0aa96c7914. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/DEBL61600634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a9d71310b525dbdcbd8f33dff86e7d925555b00679e5a16ad12f631396d134. 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/DEBL61600656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb83f47e88c423e40360d1679fa447c0272135caf69a66178d26b6f07f12b9b5. 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/DEBL61600635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d314d8bbb0ae40bdc9d8e2bae920be0db118e57e2f84b3df6b296d512717b4. 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/DEBL61600657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e9f4aa3bbecebc809a3ff9d1c7670441ec42a9ed80dc352df137448de54b13. 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/DEBL61600658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c17fea2208cf11f4af92ac38878a0bfcea8bf8cb1e16eedd6f535ce5e09d3a. 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/DEBL61600638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972d59816551ba9d852d60ff7c55d89923ece76f8a053d97c490647918021741. 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/DEBL61600660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd53f1eeaf6cd948701e9e32a2ecb7996a4ed6a496fe562326bd2e6b78b3ab50. 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/DEBL61600661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7e99df4e700de31d83e8af84157369bfa31841aec69400c4bc94f78db82c23. 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/DEBL61600640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e87badc07d77a1a4f3a435d7ac1461cf319a51e440757beeeacab290481ac4. 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/DEBL61600662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e20f635a86d5b29c18b606f9c52f059a04b352336014457916db33a16dc475. 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/DEBL61600663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897baf9df2c20700e30030897c7fcd8222084231541b183feac4ecddccc4291f. 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/DEBL61600665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41276f18b7438db0468cf41695a6e1a57ad6f288fcaf64055ab57e91cae2f821. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEBL61600644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13431e12cdd1d4f665ac21ea57791eb1cf029fb945594953cedae59c85102b47. 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/DEBL61600666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fdec211ad0d3eddf8607003efc92160891a9d3321f9b1e416498c458d5b309. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEBL61600645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3842ea4affe342a1b7393a34021b0979949f6d5d6fb33f05adbd215bc40fecf7. 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/DEBL61600667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23044acce4764c9a97bce9af09d926206f6a723c8a93b2c9cd7824720cd35b8d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEBL61600646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca76456bbddd905487cdac2a5ab3ba03381128da9f596130193998c1c1c56dd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEBL61600668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35de14e12d11e17fb7416a692d6b51d980694885d71feda00c560cb00cfd2c98. 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/DEBL61600647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f51afd76857403da4506fc34be48285a763593af42acc6b35062d4887f9940e. 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/DEBL61600669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc429e2d9fe0c11369cdcd07b2d79afdd851c90bb27051fbe7c315fa95df8494d. 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/DEBL61600648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69d41d3566f83ca13163af79ffd364a16a426076d06949b615bccf9dd6739ee. 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/DEBL61600670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41b13bb51fadca64344af1a2e59f725f7fc08d86b8719bda4f6f317b7b61fbe. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEBL61600649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ffad9d8c430bdf60468333bb8bbaa2f0684b0328c94e271b762bc27037c057. 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/DEBL61600671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35ae8c1e7b4621fdbc6d0f1229cb927f921b3ca6aaa17627890d4a94c5b711c. 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/DEBL61600672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daa621940f5b620038278c80038d857e141493fa374fa335761de8b6964bfa1. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DEBL61600651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa19a9c328219e7eda214d9d608b1de5f7f5c0eeef23a5eacfde56ce7ec7ac2d. 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/DEBL61600673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb674b62515dcd6c64bf7d84176e64b4b0bd1d950770f308a9f7c04c468a9993b. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/DEBL61600652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac75b4377273aedbf8831ad1e3c115c471bd2fd30ccb23edc436378694a156ff. 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/DEBL61600674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8866929b03622006cde65bdb7a7b5af1d9c5f79710fdbbafae0fc3d83dbe7d0b. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/DEBL61600675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b56d150635ea17fbdd4ba8e3b01dd5e5d6ba1998f9169bafda7f13231d6355e. 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/DEBL61600676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aeffec2f4d32420709eb32c040369fc5a5b7995e317d29f1fe9cd04a7c4a1a6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEBL61600655.
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 0xc56ee6e02d913edb7ddce80636af382e00b15173303bce792a11ed386712a4f3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEBL61600659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c39f4bf0e1c023616979bd6b95e5304021b8d12229061aff8b553c9c56fb5dd. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEBL61600664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1775b6fbaaf7f03503046a1689b596ac49babdf35e41e895145a4b648e43e1af. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEBL61600677.