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 0x1ce69b65248f3cec9f4b0fe97b62d22cacaa6de10c8fc60301f7f5c0baaf8538. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d18b740-c7fc-4736-8312-8fe8ebac564b.json and https://artists.proofprofile.net/proofs/artist/2d18b740-c7fc-4736-8312-8fe8ebac564b.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 0x5ac83adf2a4d96350e0b400dde42708b012ad6ccd8dedfde1f2331e1bd3e83e6. 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/FR96X2198942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271cd292fb7d7e011a3b78771163304033bd51e1c3f73c8e6f847ccf693d4302. 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/FR96X2198944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345975078fdaff6f21a212cd1e3e1359ac0d8033edba49caa8db6cd5402e61fd. 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/DGA0P2353239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363061d9d5de6d5168a074f975770908e818abbdfb1adb8d9aeaa90710424c1b. 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/DGA0P2353240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2a58204c55f654d436e1c28b9a4195ded9413c3357f6cc80d4dbb468e6221e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DGA0P2353242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8787ec756010f9eaa7dbd3096a06fa3402be5a847a32da9ceb30a1145a07ebc0. 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/DGA0P2353245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16915f2b80600ed6532dd6eca4c529f3cca053a94f519b7023bf6c93a43288f5. 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/DGA0P2330038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddfb83d67b6f8c85bfaad35cdb4db17dd5de1bf4e049c555adb5e0e1c2c787f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DGA0P2330039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279d5827a37a2364807660ca59cfce3acbae97ad492a63d84e70efbae75faf05. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DGA0P2330040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b15a6caf2ca9d772869e6e8c14de21906b8fbe522ca6e1caefe337142ca9360. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DGA0P2330042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a52189618828d397929b7f677da375ea3f57caabfb2b35e0c668386cb266de. 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/HKG732431744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c8f7278d4f5ab4ec453a3d183dba0866c3295acfe74e570dc80bc4e94f78d6. 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/HKG732433549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1b4e4a8d89dc1f2d8fe7a510a4da31360a5d809be4295e86e23372ae6d72ef. 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/HKG732430765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3342ff229a49d2c4ec0451d242ddced4f058c07482119a4e1dd49a5c14711416. 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/HKG732433548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f06826632a21fb8c529fe72bf2e2eb47539abe27640ebd2893cd64e232bac6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/HKG732368687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4398ae5b53c8caf02b7ca5ae8844810bd5e7e833b7e757336fd78902ff3c1fb. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/HKG732368689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d848e511173fdcfa7a9e0ae9efb479af175cfeb5167eb2222d6becce0e8397. 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/HKG732351630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba51440dbb77023e28ac22818c4696d5a14a555d25b5b667549474c1e99495eb. 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/HKG732356854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85aa79075b6814f66354b1eca17dcdf3d7a74920f72a301d21742665d86e7539. 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/HKG732358348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b0426227c58c3c3802f1c0a1545a69ffa87d172187cc70dd8800298e88ecb2. 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/HKA412300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba51440dbb77023e28ac22818c4696d5a14a555d25b5b667549474c1e99495eb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HKG732356854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac272c2555dfc722291140ec1796662b9c38fdb2eb0308f2bfe7508568f4e89. 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/HKG731600129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1914d0f205579206dcadfa0ce385f97f66e13490c4b7e05f1bbe2b8a60fe5b76. 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/FRX202101673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57371b8b6352ee19800046e119b479da2707b85bb95d9a985e13c5cef791d0c7. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/FRX202101674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbecfab7347383e802de05af3aa186e6401bdbe33b2399d73bd30d07c14bf912. 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/HKG732236058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c67acfbbbecebf0e46b5a02127ebcec84dd63a3e00a63d59801335e94be340. 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/HKG732236825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2679bd4d1b02df1b6260acbf13ae6a735a2a7727b267a5afabf0298339909d4. 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/HKG732236826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70c5fb4f62d0303840419710bb7e7196252a7121b6bbe1708812fea285f3d61. 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/HKG732236827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4e7fb998a98932af753189563b3e472e6941b4f5b390a7467e3ee154817494. 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/HKG732236830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a4640bd937faba1ed95a9c5328faf4d8c7886e76e6de1984c04cdddeff18b9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TWCC31908081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2efa566b0607427115d507a621fd79abf8ef74fb5227da9d72054188106a12f. 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/HKG732513965.