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 0x4e868c54d8e87b066b2ae659b26433c6bf74bd5b1780253b8f76492883e580db. 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/3219eb37-5015-46c9-b832-328c1c9710d3.json and https://artists.proofprofile.net/proofs/artist/3219eb37-5015-46c9-b832-328c1c9710d3.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 0x4185e10f48a6195ed7045ce87e0e31294e750832d81e2b9fd6b7c90ca430856e. 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/DEPI82217399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b83e30ad23ff4e27b86610e81b2e17cde18d45412716c822771a0e71d553a3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEPI82217400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c0d4189ae5160608b7769b8ad714f742c8eed38deb1312e8764c76dff08f72. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/AUGBT2321731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5924871014b4c6cb0811598a44cafdf600a00043605c6ba6965af70ac7b7899. 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/AUMEV2437530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bda197f13b6b072c8e9b48dc94962722f54e9b3abc23a992d44da2d09cc0452. 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/AUMEV2437534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9efdded839b775c528c7d40901cef51aca10a62f66f7c1fd5589bf264a77a6. 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/AUMEV2437535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9f41fd7c7a5ed2a48e13fdd2cdac123ce7b07d74e94088f1e9fd45a3b4ad7f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUMEV2437536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6a9edf1043880add2cdd417b584b69cffc8702e2a4bfecc6e188109eb8819a. 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/AUMEV2437537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9f41fd7c7a5ed2a48e13fdd2cdac123ce7b07d74e94088f1e9fd45a3b4ad7f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/AUMEV2437536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bda197f13b6b072c8e9b48dc94962722f54e9b3abc23a992d44da2d09cc0452. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUMEV2437534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9efdded839b775c528c7d40901cef51aca10a62f66f7c1fd5589bf264a77a6. 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/AUMEV2437535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5924871014b4c6cb0811598a44cafdf600a00043605c6ba6965af70ac7b7899. 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/AUMEV2437530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a464e8b01598eb029e00bfaf2326ec7a8e0a2625ed9109307fd1cea3cb2d90. 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/QZWFU2453191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dd733ad7c027b51916719f7f2c5d2980d7825d6f4ed19e64c8da8777b24674. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZWFU2456591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3319ffde6ab7ad725d177fc2a9484440dcad0c8d313b56246dcc4a898b0ace59. 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/QZWFU2456521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06af647444b61c0031e3c4c20a4a41c5dd8d6065eca6e2aa6fa7ffa599b8a31a. 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/QZK6L2516923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859a03e54cda4df7e7d5c4de68d483172e08b2fc2234718ce9acf38f7e882c2e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZWFU2456595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85997b16f96bdcba6b8ec1f72a50890e01fae838f997db1d7b99debc01188886. 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/QZWFU2418444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a3beed2882136bd3fa9ccc33c0cecb761eae6cd9a3a38563d604ee45647b5c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6L2516924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1f0f4fdd16bb2de0290690b811addf8bda6130961114ceb8aea1329f2a42e1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6L2516925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cbd7c2bab65d6b46f33c936069eb7a0c7adc8776428dac0d7cf8f2cbc390a4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUGBT2355257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9b7210b1cf4b71478503595fc4d1534f5aac07897ecdabca1dda4e27745a36. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/AUGBT2361225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8971cbd1676194d00f2fabfb0e66143d632c4a4fa2947ae0f85523920a84ae21. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/AUGBT2361228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07491c865d4371e0abe7694cccddc5065a791746aee40c9863591f0ca1d6f8cc. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/AUGBT2361226.