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 0x52322ff5ffb00fe97a698c65ff710f2b74aef3f33da0a7d9f97b0cee99233d6a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4000abe2-6f87-4447-891f-f06088b9fd4f.json and https://artists.proofprofile.net/proofs/artist/4000abe2-6f87-4447-891f-f06088b9fd4f.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 0x988204611cc02e30e3bf9db0d9e2e4a5e03ee0b7c97ccc0a503e18fba63fa10f. 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/USCGJ1740578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f76b5a1d537dbdc05c34a25f5349d53f84ecfa8ad23fde95f97545ebc44dc8. 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/USHM91727340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecbc638c6c74fc1dd829023c677ed901ab2cd4958e950579d6d8f8ed132cc50. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USHM91727341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a5ae4ebb7f9e7eb0c8ff437809e048a05eecf13645c391fdf0b34121448647. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM9AA1919131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d11e1054f41ac13e0fa7fcf93c08aaf6973c1d228433c59fbb9aa561aebc90. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QM9AA1919132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb216edde9c443509085d482392a37c816f72fc82bf004d95344e283e2ea756db. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM9AA1919134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9427fbd35f2fe2acb557e8181f2d31ec3d187e38e99e74da9b588c1d6704a20. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:43:18Z), 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/QM9AA1919135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86decfcc8c436195f27c5218e20de32edc6d232f6043646113bbcbc91bd8a795. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USL4Q2065241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d52e569125fe25d210588330167039ea70e4b1daa3298b0e5cb2f58100efe3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USL4Q2065242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bc74a5f2b944503f50c8d36884be536cd1f066c059fc65f90f1fb591bf64cf. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/USL4Q2065244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bcf9eb75aaa4ea713063a5c09b54a0fb7bfff61e066b22796e069ebb5b7a87. 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/USL4Q2065245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82969c713a03821130cd8c739b9f803ad2f09fdcf277746a2a83ef6b12768aa0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USL4Q2065247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095f42f6d82ec573cc7e3339484d19d011966f6c1018b0eda3d24c653b894de0. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USL4Q2065248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6af33cf5ac95fc4309ed03f43b03ce86fa3aaf35e746c8c99aef05c029876c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USX9P2029936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f965c61016a5605651912ff62fe22df49818947c34d1ae0dd7d499d6ef66dd. 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/USX9P2029937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe054d316f3a1b679fb4bb6e30eac4326b69bd4de08deb7615de7e0719a0bf121. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USX9P2029938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85350b2340bb5b6cafe0312de688376da14ec0c8d3f246d9bec8e9333a69866. 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/USX9P2029941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c304a28025c12f9483e5cfb9717f5a33c7c4543152b9546df6ad5774155236. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USX9P2029942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce9101251c0b492365bed17402d9d98a198abe14edbcda2f9eb24a49102c544. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USX9P2029943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca659c69ad5780e717d18cc6aaf11cc176ff3aa370cd9fcaf3fef77eb425d34. 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/USX9P2029944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2641c7363851b2abe5129f1dedfa19cce56217761e86de11a2c5c240bfd18b7. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM9A92098004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f31005433d0244f216e4a371aafe85d72240ad5365f15d5a3bb92785cd2cdb. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM9A92098005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18b99c900a5f0675b75cb1f84b2c79e9b2e5e4fd01013ee3a15a223c07a2760. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM9A92098006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0a2d47d293b358545cede60b52de6be446ff4ba2ff695b794839d5cde0c521. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QM9A92098007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb5f0bcabcf1b32c16fbe07a29fd1845eff6cba8f09a805dd91d8abcc4afc4c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QM9A92098008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4418a1e631729f1cd4aab07a99abf463ee8eebb7ca8b32656c71d2fd99af870a. 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/USDY42444973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9b16bdfd1dc3fc5dd57b112e818d1e0b67a3d0e0e4229c8210e6b54c6dbe17. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USDY42444974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5271895fe8f325c191f2641932d8016977afbd30f40ade83a3b36784bb4dbf0. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USDY42444975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64a3ede0fc089a4794e5a1fe444a1ece3dd57933de132945bc5bc7019fb4f66. 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/USDY42444976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80aeaa01f3accfea29a55f358e1d7f3a2d9da5798c88e44c8fc838ae67b1bab8. 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/USDY42444977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127145babb0073c3616d45bffeca5268922a782794fba3150a7d0bf1ac486469. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USDY42444978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde20e2de6246ae0fe725c6655ddbc790940ab1adc9b9e99e7ecb94b4e44626d4. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/USDY42444979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ded60aeb95bc79e162fbbbf061e52c5feb73e309b23a14b924b3e18a2db28b5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USDY42444982.