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 0x5fc2b4e8f2239fb311774efeaafcacb71da7b7a2242c8cf07a3f28591b59ad18. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adb9f2d0-22ae-4d29-8521-c2245168deb2.json and https://artists.proofprofile.net/proofs/artist/adb9f2d0-22ae-4d29-8521-c2245168deb2.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 0xc22c4b4ca5e2e4a3f6a90be2912113b0c636f455b332e48fa5b259b211a93d81. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ES06F2300702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8088d83f41dba1bc8500110defd8ddff704067047f544566da5d7679e8a663dd. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:37:16Z), 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/ES06F2300705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb0bc234c405e65a80c92fadad690aadc14e6824f854e36847308a691ca17bd. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/ES06F2300706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b00afa2afa105e519ddbfc193039cd7b5906421bae2a920d5101803edcf6228. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:37:59Z), 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/ES06F2301207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac788c28cd05e8dd9e653730e5f16eadc4ca2c740d78d45266dacc3edff8f3ca. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ES06F2301210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbe82468eb5dfa1d97cd1c1fb3dcbd9e8980f934b6a9f11fa9aefb4ba934061. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/ES06F2401641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dd5ad5061b729b1aa42e30112cf2dec1d06abc5159f40454695aa871e6c423. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ES06F2401765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f94123ab6e05fdd227d96136aea085397b909602123777adc39be14dd17f95. 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/ES06F2401770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d51b9b3be1091ca64f399d6c3b4e2fdddfa37c72849c8359b08c52e07ef9a5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ES06F2401779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc93e2aad314ed3b05535bbcac1e035fc3551501a759a9f64ad946181c5a950. 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/ES06F2402177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d4ad258c22333307d3e4194098a8619ea1fd1f38738cd97d4219626c281e53. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/ES06F2402178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45579b9559b8942f0d86538ca71f5ebe2334e56ae5189411d700787ca19ca09e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ES06F2402179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710171f76c0749df441f81e22ef302af9cbbbba72c94b9f6c186752135c4081f. 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/ES06F2402180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e4d2d33bb142391ac8986c16b6c67e26998685b6e97d5adad95a4d1e5fc5d5. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/ES06F2402184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862909058c003a075e76bd993b5d32922fb896203abb00bb6113f335057f08f3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES06F2402811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c5f4fe89b2797c66050f344ca3b9232989dde75003c923a14223fd84df0489. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ES06F2402817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0dd6fdb141b1d70e62e51537c3212a195066ba0cd7bee5c186119e594c978a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:06:45Z), 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/ES06F2402821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebe5104f1e9d452f3354094f02e2985ab179e97f3b26fe1a2c91fa1914c20ea. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ES06F2403227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b93637542a10099105ee2f2615463388d094b29002712dee25dc91c624ae676. 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/ES06F2403230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385836e65052b58ba02e09d6212642a04fa1f661608f858be794bd9da295afce. 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/ES06F2403231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d8a4f896830644b81fc674f005cad354c07af5a74f8fec9c0c3499203b4fc5. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ES06F2403232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311ef5718838ec0c337beed5932516bf38849a142fd3f4f383a71aad38938873. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:23:14Z), 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/ES06F2403234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99b8be35c8c89167fd1cf7cbe6087a947696a4943347de564af4527a97ae9b4. 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/ES06F2403237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d72bfa416fe0da80e7ecd41986a526758a302c47e4d841400ffcd3bfdceb72. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:16Z), 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/ES06F2503465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6773c99d360b608030281102d81b4027673177bbca6b87e6c030b5809ac01e09. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/ES06F2503466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2606edff1b1e20d48321040d27c9b8ff0ee0729d623d195ac299533085f77289. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:29:47Z), 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/ES06F2503468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffc53d59ef8f9a8940972cf8a8fbce54868fc16618d3157a38deacc3778d058. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES06F2503469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889920d286b590879d712c302b924f133b39e196888959893e302e0069c1b693. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ES06F2503470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c7a60c8733e3200c0008dfb3b12a55ce0d8127b3d64cf4037e8308dc02804e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES06F2503471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9202d94b09b707e2fcb279ce5119bb5e5a9962c68052fec6f036734b604a4f65. 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/ES06F2503472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d95edfe470e4007e783a1a8fe76561ac8406175085f9e7c4bff886c9c85db0d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ES06F2503473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0faaae1b7aba137eac2cd94bfa338c79e4290b3e19ae88713c6c10d02a05d003. 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/USANG2520419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626567bc4818fa47d44c7187057b09c75fcfddce08c53954602a8ef5bcae6b83. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:51:40Z), 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/ES06F2504384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4441b571c7d36a656267f3cd1f54e6ac893009db9a1161aa8dda63508dd9defd. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/USANG2522726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5100a3712b60575c78659ca2c5a8a2400c140c1ef54466e87399e79d2102d22. 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/USANG2522727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb61a9271dd6ee423d009e9e25e300c994fd8b6fe38b478443659f6353fa5d2. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:51:33Z), 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/USANG2522728.