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 0x80299dadbce760e50adb9da46859536c93c53b7558474e3f8fa8a9d9b26f0e92. 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/5dbe5c86-bc3c-4244-849d-6d6baa54de30.json and https://artists.proofprofile.net/proofs/artist/5dbe5c86-bc3c-4244-849d-6d6baa54de30.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 0xd69412a296edb2b18ee52c67edc83e3c52a9be4758207efec594c0828b9941ac. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GMBA21461619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e97e9c5d760d5760a3620a0f5d16c6c6604e4698d6b663848fc06f0825d604c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USCGH1712538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8535e1abf4da813b14b708f40319e922291361a52f87122c461a23404b6f2d9c. 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/USCGH1712541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aef02cf6e1eaa49112c27b693837c532e63366f3ee521eeda1acd88673dc836. 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/USCGH1712542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dbc7e99e2d33db8c80ddb23531592e06456eba5fe62fff2e64afd86dca3c66. 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/AU3SE2200288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b6d4e6c1eaa8dc627fe5552937a3e15d2908448a9a353f7632d2e686492317. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/AU3SE2200555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5919323cf3c0442c64bbdd37b3a825c21c21b67635b3aaf20b4a8109c9f9d69b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/FRX452331419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3927e2087847c9ec5954031cd1cf25d7cad4a2fca267d3e79163ffb68b36f60. 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/FRX452331421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c7b5e14ff843197f90557a3ac03cda1a925f4c4f0991e16feedaaca49f3c0e. 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/FRX202455481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5384cf4f9c2f4e5b6fc84dd312bc6dfb1d40ab2efdf6eedc1cec2f0296739ce. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:25Z), 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/FRX202455482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d892dc8c8fdc5389582c87ab057266b5a7a230f38317d072c834ab16e99e6f1. 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/FRX282489559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55f647a75ca6215f258b034a9332794bdca8b38a19981354d036ff1da16979f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FRX282489560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1814ed3c27b270e44832146523e942179bb03424c9d29a84d750a4c9540734d3. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/FRX282489561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111ce728f32d65f4541516269c29d63143e5fbd8f6e00dec6430e8e0b538b83c. 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/FRX282489562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1939e264b6b4cb82753ea02339ab8692668c212972960a5c98bfcb7ec51eda3. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/FRX282489563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df14eacc74962d27fb780171985adae3538ab68ab5d45356bb9fc7f0990f732. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:09:04Z), 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/FRX282489564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1bb4562dbd4393eda1aaaebe97f1d68972f374a0094a1016f0fba6691a9c0e. 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/FRX282489565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1d1d152be593ebedb5be1477a5eb1a3ba217cdb6fe3124990171d2dcbae696. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/FRX282489567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c7b5e14ff843197f90557a3ac03cda1a925f4c4f0991e16feedaaca49f3c0e. 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/FRX202455481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52741dd68caf56cc348f6dd0d61bce5aa581dfb8324254387e50f3841512af3e. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/AU3SE2502809.