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 0xda09f259baa44d3e837e2f3d26b7f1f820c513d3b0828fc6ec23aead8c06bc3b. 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/bba12baa-855e-483f-8da8-bee72e9d26d9.json and https://artists.proofprofile.net/proofs/artist/bba12baa-855e-483f-8da8-bee72e9d26d9.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 0x320bf7124853dfea1c698019cfdc944802dce23c412f92a840f6ab168a832962. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMDA62183803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98a6f3e9b4925f862db60a939a83985275ac503bc955effd4dce9e1d7044469. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA62288560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf51182f2d86c1d6e6d83f96181f9ef7f9b6d8ac40479b3ac40ab8b4fc6c57a5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMFME2330013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65db3c99e9cc6b2ee6b8d190ee7dd6db3ed21f16fb4f2c38d789e9b7bcca1094. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6MZ2196155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9d9502b99a0525d452919a0cfd1cc85814a09a20a06086cae094b7fd386013. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TX2433077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9d9502b99a0525d452919a0cfd1cc85814a09a20a06086cae094b7fd386013. 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/QM4TX2433077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54c47bea6eea5576fcae5ff5c76ee4192b8ab81f52076aedf26f9c16c7c47dd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWA32200665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882d7fe1145a41f25bf2adadb8d98a9d3a521746ce557382dd10858057163c0e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/COA6W2102908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdded572833330d1e39100bfb4c30e799d08464f42678b8f49d528cd97e1c4163. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:07:41Z), 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/QZNJY2110786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8254a9c6dfdd375402042d1ef264affce94ebdad3448a20d68918afc98e559d. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:41:10Z), 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/QZNJY2110787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544988f69279164eaa08215656c73530226c623b6c5a9245be720e0c2deb7c0e. 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/QZNJY2110789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111db5cbec297c5c7e82aa95b7e9d0a4ef7a5802ee510b17f14d735dbe25801b. 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/QZNJY2110790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ada6ed538bcecfe7cc1d3ce963050448f52e2bb1cdfbebce77e59e6c021a2d3. 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/QZNJY2110791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1957a057e586035ecb8fa6bb36e8acf177208ff0e8e108e4f1e06d7cbe194e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T20:55:38Z), 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/QZNJY2110792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319bb286a73289cc5a421eb6bab056d78e84d4f1b75ac41497d4bcead43bdc58. 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/QZNJY2110793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc924c962192172dd9e77e47307412d9f9d2fa7f2ea27ae241b033d63d40cc215. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJY2110794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b907bc4497063bc4a4d75159d8282466d6231a5882b30c28a962bbeccb1d61. 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/BK4DA2415181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d2f869ffff7e5bb55392f781f708531e0605db9b6fdb2029ae30f7bec0243c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAHN2378283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97917281ecc05786f5abcbc58cb2afb86a78a4718f697752aeaa5aca4b399f8f. 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/QZK6M2110449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af02e70708cb9d7cb42a8a00439dea54e3011bb4d926f541f363715f644dc28. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZZ3N2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfa1b6a00e78e4939d49bdbc07c924f58a4d751f86c3ce644abdc8fc506180a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA72242915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc189bce4e7ff06fa2c69a8936b4581284d68af5aa40e2139be1396caf3f18bb4. 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/QZWA32200429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbfb6b95590f8553eaa130232142da1bd73035d3b20c83ddb53ca477f86a031. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWL12302581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd971c0df0e139b8bfd66a9252d9be637b2cff6583cef89b2d4e84dfad703e5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWA32200706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54c47bea6eea5576fcae5ff5c76ee4192b8ab81f52076aedf26f9c16c7c47dd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWA32200665.