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 0xffea9aea013a24272e2b2703f3d845946ff1181903a4ddde0ec9ddce26608f3d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a63d8460-acb0-4696-928e-3f515c8ed3e6.json and https://artists.proofprofile.net/proofs/artist/a63d8460-acb0-4696-928e-3f515c8ed3e6.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 0x1afbfd8353ee8d23eb575dbc6241872a963a051985692ab26aaad1c876822675. 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/BC0UT2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b781bb168342cc610e4a292ca79f08013993e3394a90a73ef4bf533efe8036. 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/BX7P32300764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6866d39542ceac73364f67f2f655d72c7b2d174a6fae6ba340998467b4f3ed71. 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/BX7P32300631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1645818b78124efbca332040f72a236ddc2f86ef2ab35bac979af159029f9cb0. 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/BX7P32300369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fe2848c82e94cf97d1ab6e0cbe64d174f0a539c26649f0b202c37e20049ca6. 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/BX7P32300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe941a2668e650a3593e1d0c1107741d6aad7d3e4fd7f7f077c8423f709e707ce. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BX7P32301065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e67895f91b6877523ef6ac8688ec22edff1c581294a1421ab4bf9ad2c1e3c31. 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/BX7P32300807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf625e9ba0743de3b321415d6633f2551a5332eb47153dde02f3d83166d5ac4. 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/BX7P32301080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfc9c42e2ddd46a61559611337512a51ef2affa9499d9d0b79622949b9441a4. 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/BX7P32301084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30a0dce6853ec8630b65dcd7c9a0cd7407c9d6c3ef917228ca02eeb1de4bef2. 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/BX7P32300370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb6322a61c0d85889123e585822f7ec6e3ff53bb40eb4d922363f28772b0b04. 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/BX7P32300375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91dc4298474ed96c4fc7530f36fc5ff820e6278019337cbc57ed9b5ceb09829. 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/BX7P32301130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c81320a644830a82f1e08dd5efce09d35e8a98ce3449b46906119d1e475dca. 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/BX7P32301116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085e03593aeca053c77b65fb0c85445ba01ffb765414ce113faddf2410d9fae9. 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/BX7P32301113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38150f1dd61a6dbbb01c7f2c53e30fca405c1674f9f7812fdd40a952b7c4433b. 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/BX7P32301108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a32b9e15707d2b94cc8ab02010e87ea769fa56d7966066f3b35e8cb4f763c2. 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/BX7P32301115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6fb27319fbf57395e0b5599919bda588a1370b2357725c86e94b76d499474d. 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/BX7P32300964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12017039c031a9168f4b79363a6869e582b711199a7fec625802bf46fd1a099. 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/BX7P32300822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8964024d819b3c9a23596905bdbfb200ab7841072c371730c78915256d7657a. 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/BX7P32300774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa01969af897372539406da14f2f8f949ae4782d85fac133777193bc4a95cab. 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/BX7P32200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23f94763762a62c6b8229f3e31c13ca3eeb671b383fc4223e6d2f076025e5a0. 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/BX7P32300261.