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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6447aec59d779035fad7814a4edc03d6170a433585dc48512a73c0b41bcda22a. 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/29c42f3f-96c7-4c5d-9460-5be0f098f501.json and https://artists.proofprofile.net/proofs/artist/29c42f3f-96c7-4c5d-9460-5be0f098f501.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397b82c4b62b7d89bbfda88025c41d970f6bd3c964928474be4547ca7fe6b529. 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/AUMEV2433187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5533d3e4bb16ef49b89a9ce1a56baa53ab0e356feeea4207a14fa1148a9bbe. 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/AUGBT2346317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33fdfa1bd381741d525591abb38bc7bc560d673755802e868e823da46f19e70. 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/AUGBT2346291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa937ebbf8be97c567973d66f91028eeb27155a30c65a3c89715a48bdee0ccdd. 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/AUGBT2310884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cdebca6464ddb240c00228d00240cd422cf0a75a945d6fb4ed3b947a36304d. 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/AUGBT2308886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193775e8e9e30be9e4dd29f6ee1ebf5fbcd1951987d32515c52eb5fc6d2afd19. 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/AUGBT2308884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ce8fd0f51a18ba2442bcbfa92b55e8491c8b2efef67fafcaf869b556205c11. 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/AUMEV2349626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20d4919e409ad1e464fbe6f5d4c90f08627ed8e78af8007cb7cb0c791853ae0. 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/AUMEV2330556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fe9d46a29f808db0c2b5e01e1a12792d63eed42d4a970e848a44fd1c4dcbfe. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/AUMEV2313068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b715c3b67587775a97f1a93fbe15a7a68f4885ab0356e230822183bf97d710. 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/AUMEV2305391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d36842dab83ff5499b6880612228afabb58db2fd2ca4de036e9b943a24fb3bd. 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/AUGBT2208612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44e78bdfe77f707efeb484bf9140888e259c0a1a7b778ab6173010a2b4b06f6. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/AUGBT2208611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf91b584732e862af2dae0c2aa151e0e489157c54236790a1aaae470122747a. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/AUMEV2270688.
Total Eclipse of the Heart (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8643be1c4045fad544b13415206bbb6802231625d6b2dcac9abf0a909515eea. 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/AUMEV2270528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed2c607f74f87fc22cc2fcaba122eed4fc425f0b02802cb763ed9cb54dd658f. 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/AUMEV2255107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553fd029e7dbdb06ff76f7aa443c8d0b0b5fdb3df8295b5111ef35f9aa98b513. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/AUMEV2245608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f8ef5b62fde0d9a97d65d847d7a87f836d8466ed09c32a6c8d1fbb94ab7cbd. 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/AUMEV2238216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c553851a1dd1b9e1f4a2e2732bc324c522a82be4a17b5e0d3db7bf62ef8978. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/AUMEV2234101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fa3b6d69797a5f819e313c253c955029309ca2a477ea7b1b0393ca8ef55046. 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/AUMEV2227509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa563cc6c5c5f4fcb47f52c42522c546fe5efe1f017fe3ef81d41498bcd7918af. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/AUMEV2222484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9539ef6b19bcf234e004f9c3fd26521fac65d5d3fb8be11505f63894cb0e43b7. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/AUMEV2216664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f4863b97034ee957eeeff89586317a5325beb234b8aa4c873baaeeac1c5c0e. 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/AUMEV2212257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef35e77229044c4b3c444d8096623cdef77ad282c7dbc7cd539a58ae4ac3a912. 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/AUMEV2204123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c96f4dc237ecbc0e9261d2dfef79acb89e694df7c96837e963a0be1310de064. 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/AUGBT2427522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543fe9a5dcf7acfdf38a6c671ba15a4d3c763a22efa5538897dd060e710c3337. 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/AUGBT2427514.