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 0xd62b32fed3b12309f2f91d926b676ee58ad529b31376e7e0eca315b3fce16cb0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84cf1451-9d1c-4c9b-a347-b845dfabcb26.json and https://artists.proofprofile.net/proofs/artist/84cf1451-9d1c-4c9b-a347-b845dfabcb26.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 0x287cdff3e1c1adf5fa329e59cf579621a79f2dcb213908c31918e4d697b51636. 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/CH7812217393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af7a9f327e3940bcd2b460cd6e605a28c74fb284fbd26824c3a549a25fd8abf. 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/CH7812219383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbd3a79a32917d20b37b1e129b6121052c91e0d18a76afd528171432b3a0b78. 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/CH7812222405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc312e6e19255d8be973fac802ef73f06ca3ac4864a0f1a788ec985524fc87a0c. 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/CH7812223768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce344738fada3d6c02f00acdae687f3f530b5bb02a841c329ca3fb962cd82361. 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/DELJ81824611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1871aec57696091275a5e2abf11908bd82a6243360e5a00dcb7728a251a2ba. 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/DELJ81824613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ac7f3399a9fcf7704f0392262551a96a39c44379fdb2cc4c48489e0319a7c7. 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/DELJ81824614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567af5436709fbee246331d059ef53ef446b3e147106649c6efcb38388f95bb7. 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/DEZC62449915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cc78ff363ea7d9fe40f15edf608385fc1eb11b1e677a0b1440c7f23ab77490. 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/DEZC62440831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97db64bdb4e544729cab887d8379f067b804ac97fdf552ee39388e59f2beb112. 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/DEZC62410335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8acc34d096c3f41c152650ae5acff28536a87be0011cae0bdf8063bb4afae0. 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/DEZC62499145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbd3a79a32917d20b37b1e129b6121052c91e0d18a76afd528171432b3a0b78. 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/CH7812222405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287cdff3e1c1adf5fa329e59cf579621a79f2dcb213908c31918e4d697b51636. 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/CH7812217393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95651715a4aca1137c90e7189d54a534533758f0a1f70a3a1b8fffb9c0ad0956. 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/CH7812195158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295ce52f769001e63b975767d61859378780cd3a650d9e443bb0a80e537a4418. 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/DEZC62378400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6362ed828eea1d306c66244a3a71c169ab9a4fbb40a5f4348c34c92eb4904bb. 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/DEZC62375793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21a6d52609da9fc8adff7c3d30bab3fd53df73cd2ee95fbda5d333ab73e4626. 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/DEZC62378401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03020f8eb561ea2f1a954841fd2a57ea521e052292b6b965178df2d7d19ff632. 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/DEZC62376931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56aece9c742961e084ccdfbc6c51a42c54afc4b09ef8366396e8acff6440dabb. 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/DEZC62378402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cd6a4478739786db86165c7b925089db981b414839ba2c3eab94f03a0b98b9. 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/DEZC62378403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c650ead122ff1accc909046b3cc66899b9025730bd60dec1d06b51926d4444. 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/DEZC62418255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660bf3d8245a33097aba6693d5532826852c3f378e101aa05659109b074fc127. 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/DEZC62444821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca291fed358cce72d30d1b8f8bb6dc713548966d1100fbab37e60719e496232b. 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/DEZC62437873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61680f0838d0d6cfa52008c1a8acaeeb3fa81a817e03e4837e5cd05bbca4a151. 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/DEZC62433674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cc78ff363ea7d9fe40f15edf608385fc1eb11b1e677a0b1440c7f23ab77490. 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/DEZC62440831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97edf199d35c0d19946d6ca912cb06e91fddea0d4da91faaf186f3af33912650. 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/DEZC62444824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e26b2aafcda523c9ce83303c50e64d9439cfb8cc0766bead379f8ddc0e9617. 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/DEZC62444825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c762a34ff22c2e63bdc38d45c1a968cd04e22d3fdf0e152aa140a28e5817dd4. 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/DEXS82100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611544550f220d1eb477cd9c61113a9c105ecf15a80c3f16129f37a3fc880afc. 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/DEXS82100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2259ef2ee12d3856a17074793703c96794229505ef778ef8680d16b1c860ca. 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/DEXS82100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8399b02596e61ab2b55c7a9b4a2459c2d7fa337e8a951a8fefa0612c58091e. 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/DEXS82100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf437ff94b1d392287e722156a83019bc0b14e2f8fd94570b5d186c2ab707eebc. 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/DEXS82100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7839570ce7d8781a8d3baad8cfc67027d29788ad99bd3025cbbddb90d39003a2. 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/DEXS82100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6646e14cd2f8f1b23dae577668220493b12ef8bdbbfd96ac636f8e43f1cf96c8. 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/DEXS82100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf72a4777843b54e9e37c6c335b161af46121cfea179d75974eab79aa34c2b0. 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/DEXS82100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb9354c45804a0e3ada1418a4b699a5f65cfd25bf37ccff9178f81d12ec892d. 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/DEA622100347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865607500f2a559391a261c698dc97045a328f7de5af82997944d7cd8f215d65. 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/DEA622100348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692ea56736f713756988e1bc5fd400c8003a9c42815fee7197fdaac16912e8d4. 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/DEA622100350.