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 0xf4ed866b7e75c241d7e91f5b18878aa5961bfc2a0a26ade43961410e4cbc9c5d. 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/4aab0516-8264-4320-b2d6-eae7d2c37de3.json and https://artists.proofprofile.net/proofs/artist/4aab0516-8264-4320-b2d6-eae7d2c37de3.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 0x369e63b7a5f54cb8104e2dc77b291e5a3c734d171e21fdf49bafd27407a0f488. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/CBBED2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ad4fa7493ec0b6fd198d624fd1a08cad3f7d81c9d9411b356956e916d8e9d4. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/CBBED2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a15d4230915e6bea756a790185c74ca0bebea4c7d4e321777e024f94738591a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CBBED2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b30aa30a2256ac985c9527ec223770e7ea132c7af520a939a79de8eefd0314. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CBBED2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ce8d41d30a9ae94ef9304767565cdb824db4f8085ecb95646f6c2dbfd36251. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CBBED2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc566bb13648cd000d89239b0f0a79770aa38fbdab8ed074f18803eb94d93387. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/CADFO2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ccdf3a51452cbd76407c6a4072cc6aa6eb550ea96e009bb03a7ecea5917860. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CBBED2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435bf35c071010645299b888f6a810508041f98a12987ab66f3cac4b8d0a8c7a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CBBED2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef8134c24c7ed761c0c769cad79f30d81feb1c17c7911723aec7ab53cedec83. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CBBED2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435bf35c071010645299b888f6a810508041f98a12987ab66f3cac4b8d0a8c7a. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/CBBED2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb311514e6dae962d9b237cc1d7d734e36894a64c165c2d05df95da2128b4cd1b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CBBED2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30359766e707050e47c5653cfa75b0b6ce948c1b6f0e59b2d659fae1d0b86fc8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CBBED2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d1856d26cf95038f4a30dc25c161da444906288f968951b43794d2f204ad8b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CBBED2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef8134c24c7ed761c0c769cad79f30d81feb1c17c7911723aec7ab53cedec83. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CBBED2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0add82a32bee7c35333faf80fb39e2b27855a37474f88036ae30463d358a0a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CBBED2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fd858eb3c406710af71aec461b10aae6fef729112578e3a2a638bd29fa82ad. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:05:10Z), 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/CBBED2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1f35c3fb4e4d898f857817057a2aa2eace489a844348f5e8831e38a23cc9a3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CBBED2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174c09aef3325b4cec27e477bf58ffd33c36ef725457e8186efd82969cd542e4. 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/CADFO2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4784a20dabb605795fed2bfc021491a2cfedfaa4af5c6098abbc10f8c37e93e5. 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/CADFO2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9979a08ddd7b004886809f1b387a941ef0369d45afa60e5c83b11ace5f838b4. 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/CADFO2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9979a08ddd7b004886809f1b387a941ef0369d45afa60e5c83b11ace5f838b4. 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/CADFO2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174c09aef3325b4cec27e477bf58ffd33c36ef725457e8186efd82969cd542e4. 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/CADFO2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4784a20dabb605795fed2bfc021491a2cfedfaa4af5c6098abbc10f8c37e93e5. 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/CADFO2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb019c9961f9f095450f84bf76fc074514bba41e4eedbe037a9c259c1ebe240a0. 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/CAGOA1800250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74ba1700c820c1c83d9491c6480cceb32355b151b163f5e4bbf3ec196c5d5da. 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/CAGOA1800261.