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 0xee98d139080c547904cccd2a83330711fdc3b16f209734599b62dd45636d8783. 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/a6ae5897-f166-405c-bbac-825b78c7a378.json and https://artists.proofprofile.net/proofs/artist/a6ae5897-f166-405c-bbac-825b78c7a378.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 0xbab2cdd7085cf1d0dc923b27bedd7aa22dfcfd9f88d05841d397acf5e8a97940. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:50:18Z), 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/GBMNA1900886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036e38b9e0466afef500bf2f7fa57d652ea1d94f34c6b3768aaaeef010ab66b5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBMNA1900887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744a3d70fe202ceba9a0f54ddd83cc7200417ac8d5d24a03c45b7f228f9fd9cc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBMNA1900890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78caf2af7d66389084dc5581247ba591e9a917b9c17d9e6797b79e88a048e40e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBMNA1900891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf20aa79b5780c9d1262773be6d623fca7acdbb683bbfed3ad69ed1f8822e87. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBMNA1900892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b92c280ed9c08a72ae1b77dce29382b41a57c8673fb0c7cad6ef0231597f5b7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:03:16Z), 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/GBMNA1900893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e8271e262f4e5c3e41f76feae4220fa923631ecbbb7a614081d6d1667f0fbc. 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/GBMNA2002239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a29cb070ddb828129855020416faec14e346b79176e69adb0a8404baa0701e6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBMNA2002241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89785c21327ec65c0877a0d64e1943ad2fe42b03c53aa69f012145dd9a2e9e91. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:57:51Z), 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/GBMNA2002243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c82699f4c1dca0589b342de49602de6e29ed5e85c759e7045a5524d33c57c4. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GBMNA2002244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4774b5eedd5cf2e0ccf8f65023e8e578d8725b96ac235415c007ec1ed4861ef. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GBMNA2002246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed05d5ec8c944c915f2e10a105cc39b5431db30e83198f6e19ebd8eaad7157f3. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GBMNA2100373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bf047e28f72918bdb699f4d25baae3c4724fe9fba72078ebe94eb0deb415c7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBMNA2200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e4b493f5c168bf4cfb79e989121303ef721c572858fbe76df3b0b82fdfc1e9. 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/GBMNA2200436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44f8ad4d89d976e4aeb0fc1d6c6d7908b85a3c1257913816b916f5fab6cfda8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBMNA2200439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ddc439e3de98125fb5be961013391dda81705b1e5af1d996576173d8a8a1b7. 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/GBMNA2201011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39517b375704d6ec41a1522988c2c717c98a3bc96ea899a590a7585a7d17d7f8. 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/GBMNA2201012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97866bb249e053e2e28ed5309e1aafdb94c8968f07d8c3c673c8b9a7686d12c6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBMNA2201013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c835f9a0bc4f92eee4113aa442bdd196122720f842ae969440416359942c72. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/GBMNA2201258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349d7c66a390c1a7b1fb33d03dbb75c7b2b3c4668bbc8850da2b433cab27734c. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GBMNA2201404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf13e8ca915234c402c540c3b2b932710ad53de65d298620b27f32593110522b. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/GBMNA2201564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d41176f24e0f746cfa1895f51f2f5dc62b7c84af088136bc3f06b7a8d38fa1. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:07:08Z), 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/GBMNA2300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cddf2d22cdef297b202a3eda5d1fe590fe05ceda5203517a230b851235d9b75. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBMNA2300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a7e1680475e793f06a5e8ed7701b8a0a9d3c9408014cde54f1cf4cf7e3ae7f. 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/GBMNA2300465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609f332bb7c2685a4f3666eab1dfd7f4a921fe395aae8beb9e4f142910495ab5. 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/GBMNA2300948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede54973e1a4664ba674f9fda11520bb5824227b1efdff05f8295ff12bf2c755. 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/GBMNA2401158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b25730c5475a0d8c119602592f0ca8aaff9b3b8e2403b2c77e0295277876b0. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBMNA2401159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bfb0f6d5bac3487816b5be8463d0f04c3c4ad4fb86a110d3d1d6ce2a8dbfd1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBMNA2401804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7af053d9bf3261a8d7b41fdd6796aa4c1bc21dad14f13c992344eff57ced895. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBMNA2500566.