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 0xf957ea25a64fd67709ce231c6295b105890ad495a51cb15186f666f7436fad00. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d940387e-bc69-40cd-8a04-aa5f892184dd.json and https://artists.proofprofile.net/proofs/artist/d940387e-bc69-40cd-8a04-aa5f892184dd.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 0xa6194ddf0fddef62272690de2bb78dabe9f9ede0b7faac0f81ab477e94c0a67d. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/SE62X2403701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf98a6d29b548160150912d6aba788a8bc76b57c7eecf9409e6bf74bb51a713c. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/SE62X2403801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986771f84c4c24a58bdc6c665feb04e681e91a57bf5a00a593f9d1f0921d49c9. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SE5752462300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2019da93be98046e06064b00a82083b60800f835cb3848313754295eae70b8. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/SE62X2404701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87274b401504fde6b1ec6bf5ee20ec7bdf4d81bcde593e196a830beeb5dd8654. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE62X2404801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c98d630d37b10f3a47eed11f7bba2e7ce02ee0094eb229047cf0865393b743. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/SE62X2502401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed85403ce578a792bf714c2f4b76ce00c1b652dfaccabc3f3ab23174635a973. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/SE62X2503901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba2d78b5563c4be9be668d71e480d6fc6e499c634ec8f4c21da87daca384c0f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE62X2504601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e77084672084c5562dc8944524778d1761a427618f231c2539d9e84c7efacd. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/SE62X2505001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b73fc55050a2d69ba68d5fe32af6db41340ba5a7a79434f857e0529b889e87. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:56:13Z), 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/SE62X2404702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81c94ffcb0467795aeacf6142dd03f2fffe5c7e54c8b55fb80cbaedecdff8ad. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/SE62X2602401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f9b931851704eb017829f7d968bb5264e5d030e639431469132ec85e0a5461. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE62X2602501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6df373063554a78ac3b7ad53a5bdb8fd57bb39516abd2f5bc1dafdbbb3b4534. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE62X2602601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf2d5ab463ac95281d349db496eea182f7c6563f2e61ef79f3e0f85d6029680. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE62X2602801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f994d18c40e03446005a1d7c84cebf76adbd6286bc87b1195a79e1d116e736c. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:06:10Z), 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/SE62X2602901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ade5ab456f5dba8144dea8ac1623b349d39e2305c6b98b89217acbd252b008d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE62X2603101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe176634f4253a6e1ccba5bef14bf933908b2279560ba6398e06c4d04a019acbf. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/SE62X2603201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358ba2bc3b7e8f08536551c7a21a50da5c0f327f2c1dd0339c494701b6cfbcba. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE62X2522101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770dcb61443cd12033f873e698f0f722973751b23c42aaa7d984c91f49fb9e71. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE62X2522102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf474b9b7578494800037040742ef2bac7ea3720a336c967266be6b370e2b2956. 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/SE62X2522103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5766ec2d442a5f50266b21e8674e0d775f7f320b7f3022272448bdc929e7f8c8. 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/SE62X2522104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc89799416806394309035d19ffcfc52d440a4810e31518360076f67e29f93e2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE62X2528002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b21379a515d7144cba9be447bf90a8d10c671f5cb2138baa52619878197c4dc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE62X2537301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75528aa7c633fb396951d62858746d4c10e46035a070baea21cd5436ae70131. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE62X2537302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbaf3077f6ce3fb928bfa425a01988a0e53fb4d67918d5d413cf9d695b21e1a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE62X2537303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308e4d4d5982ccb828eb48a54de59907849abc86e771a71b2629648ce112c4e8. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/SE62X2537304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e09479fd83378b232d7fdce86e3caba07c6b2620d5def6fb67bdd5b830b6561. 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/SE62X2537307.