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 0x8ac079355040c6a46b2f7ca067cc56bba69f1e0b9f1e3e77d84cac7e4ebb4216. 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/3fc30685-fcf5-46b2-a355-92033f50756d.json and https://artists.proofprofile.net/proofs/artist/3fc30685-fcf5-46b2-a355-92033f50756d.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 0x0b2d17556682181282973d5aa9c6bf0a6855f09d6c443e5c888ad4dce4523f82. 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/TWAE32401956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa891bfe0d232a7c413d7c288f5a80f6fecd092b9906eabcf4805cb045636a895. 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/TWAE32401957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5ea78061415fecb7c77129cf84a94e758e7431d9268c19c3b9e7efec4267d5. 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/TWAE32401958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cb5da4f2a1b7ee64cdc515fb00007ea0ab8833668b0fbc761bce4b7aa7d51f. 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/TWAE32402271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab951b4222843bcd52aa124866eb1d1a24882e1fd6a17d8157b1a6f01f0a1ab. 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/TWAE32401960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c78bd625044bc42e70f7b5b8b7dc16bd4269666730e9e6b7084c67e3c81a15. 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/TWAE32401961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c07850108fdd841ed4b568f29eaf642fb7bc3e6397be3254474d58b9858e47. 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/TWAE32401962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a5e4f8bb7c86c221158d1f2b3a81955b3c751231cbb0f5cbdff503633236fb. 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/TWAE32401963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b47dcfbfae028474454de5549c550472b88847349b65afe3281b795beef652. 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/TWAE32401964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d3657e3f2f31e9137ce90d15902bdc22fe4042adef04cbebe9c527173b6fc2. 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/TWAE32401965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53be644b3f40b42b73a7f3470936bdb9c8b2db08426cbf4460b7729135fa4b27. 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/TWAE32401966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f9bc582d0ca82a8fc21025368079280fa93a238e169fb9e39c1ac084e7c27f. 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/TWAE32401967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918756e57ee85e84a635890cd2a49c7bbc6983d1e3283606606741ec749b8cdf. 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/TWAE32401968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03b921a570ec8ed5a2e35484f30752703d05be9f2c8df0f1d7595d101212d69. 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/TWAE32500216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3454fb8417c9d0d3545328f6462bada0f597a5fddd41270885e7de0ff361f63. 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/TWAE32404611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09c7f756252ba22e7586291857f9c0941fe2c20a00e32242d7408a7450c12ec. 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/TWAE32403434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60795543dd6de9e48f0be75f7c75bd28e8a3318e677b023bb5fcd151348fc73b. 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/TWAE32402572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c0b43c36229594eb9f2c4cd4298c48059bd1b96af300db03e5bb1d326089c8. 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/TWAE32402182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe5f5dea2e9fbccbc4d343ca1c4b55ae5dce22603e5b8565dac03398403a0ef. 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/TWAE32401762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176d893f9f9a029e564e946cbcf7ec616db2fabd70681caf470b0b16cc80f7e6. 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/TWCC32203194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8258e9e6a3664f90d04fba85abda17a0100c47f1ded5bb8bb7ae83ca498e1b. 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/TWCC32400295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc06d7fa24e8457806c684cfad97a2d3d9c5d4f704b2ed185f4c4774603835cc. 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/TWCC32321413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb173f9ebc773acab1cdd9d55a7f9fe4c858707c346416bd5231121bb40c0d422. 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/TWCC32321167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa54d81a6eb28b4291a0bebb74e4f6064c7188a1db5b9025f94f5a70ca94c8dd. 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/TWCC32321121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b44c236214f01ff76f5d267c4590c856f314cf4b7580b935cd3648f7b5a1bda. 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/TWCC32319831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8f5178a2fac06a5fbab818df4e1390e977e26403e1ee269fb452ce540257fe. 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/TWCC32319817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bd1168885b8975ea23ca31704ae563cd9074420261ac6bc942a086701ebdc3. 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/TWCC32318483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b488a81e08ce5128355adc8f5d1e3c253ad26366a0350b9984a5a1eecdfb305. 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/TWCC32311350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac032b46076a4e43bcfac4e19dc306fdc2be36b34345b5322cf457cf5fdab30. 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/TWCT52321504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f06a6d8345591db74e2cf299232558ea93c98b61a083ad123bbfc9f70b2077. 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/TWCT52321503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe4a11f9524162502b81eda6769072ecdc77629189aed75568b5488241e05e6. 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/TWCT52321127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fec5bd0a1c8b46762d030ada6263d61ed65ab43e3c2fa4285cba4593e15475. 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/TWCT52321126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d22006f3f39fedbd7ad85b98d4c31733a25e959bd32e3604aca909ffc23b89. 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/TWCT52216197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6634a46dd2d10d74823f90c34aaa9c618237b8f3c02ded39fa593d300a617526. 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/TWCT52216196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1e7999cf89a9cac4758c12c39c172aeb0e5919fa48388e9b4add0ae7c3ab64. 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/TWCT52216195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cf24fbed714e4272622079554ab85d6a26b71945a1004caf8852cbc96a8a6d. 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/TWCT52208843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c50e887f6dbc4bbcc1a4277988e119310c484d540b8f246612d70e847f7d25d. 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/TWCT52208844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad694cc2959f146be57cff4012c8cb642d91939e898afe65c3439134b694bd3d. 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/TWCT52208704.