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 0x67e5f487a76c8dc1fd5a93376fdd3eb5f71549c030043e33a616641164981009. 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/58b8ff3e-b311-41d6-b0a1-c269d0113dea.json and https://artists.proofprofile.net/proofs/artist/58b8ff3e-b311-41d6-b0a1-c269d0113dea.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 0x552fa4bc0d3cb968f647c1387f10e661a192493461c415b892026d13102cb7a1. 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/FRX872512422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebc3d72db1a08c78bab561176f5bd8c4fbe2aaa3b7f61c359d38aad4c190527. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX872512420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773cd547e3b8c4dbd6636884b5de9deb55e6e79e545428e6754e00261bfd44ed. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX872512421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12e99eb98ff2a89abdb237347225e0785d08c825f0259a385a764ac936e4a23. 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/QZZ662427825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b020110b545dd0d43135d62f2ca0bf9c4a8f18a8b1a048d2f2148a86658e1f. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QZN882344057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e60a45a609ccc4ce5267973b3505ed8e1d57608b1c0fde6e421fc67d141c0c. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZN882344051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecf76708a8b789eb4ad7272178d76766bf5a93f10e39bcc3ab71bdc0921cbaf. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZN882344054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05bf855551032cf511835e2e9161ffd9475d015a5bea209a16366b250ad4504. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:01:26Z), 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/FRX872512403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782f7776f2f87e835a1bd2c8269465ead15ffdf796c4b9197d02d62cde6f4bc9. 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/FRX872512418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e097b924b5d0adcc5e27a9403ce55e335bdc8065feec861479f81256acc1256. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:51:45Z), 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/QM6P42528755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe50edd0d8067d5d73a7d2dfc77ce31b3091ccac37aa406fc84a3db163899d6f. 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/DEPI82213701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6613d92d7a412fa65a784055d58a0d8885fd14ada96470032aa1bb24ba40e6e. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QM6N22599036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4a9c4aa857b49cf306b6b80c64027b90437a28efffa129ee473ee75f07d041. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:22:42Z), 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/DEPI82213686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee8368311e7d0874eba4caeb5e07f1b29b42cc08e234de89dd4517f0570b1f4. 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/QM6N22599005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06994f1d36db89f91138076690ace2b1bce730176515ee8dd366c7b93856adc. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/DEPI82213700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f5f83adfdf67bff7ebf4655d04e04a51e769331b2ba40d80d238f19e0f1d78. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QM6P42528761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a11b78a9cc028dc5af2cf8389f0586fba21c54b65d5664b0bd41ca0c8abe19. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:33:16Z), 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/QM6P42528787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b09acdc3662d814519745a9b85e193873d0be709eb00011059f3abb41e95e7b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM6N22599046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7a44dd7b5ce6402effe1b49a75fcd32902cf78441c3e14843f9bd661adf9cc. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QM6N22599062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf274e0faf0c4a35c770090f72fdd1e9cdf2ce80b225ed530ce61b8b161c3c9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QM6P42528746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffdfb5520b68a4b8196b4d42007953c08789e4fe28feebb1a110374a428d26d. 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/QM6P42528684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785b8fd69dc1679bfb38b1ac718947de72843e90df352acfd6cd91290dc5e019. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QM6P42528734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd511adb12dd0e5c5733715bde4ffa272a4e09aaa95f89ac05d460cf40eaef5. 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/QM6P42528737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a35d34fcce738b312a16f3ff85efbdac921b43138c29724441853231fa9c842. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QM6N22598583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d384db28c0f641a4f720764e9d9db5f67c13cec20bf19eef6d5443e9be5099. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/DEPI82321506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cfd99b6b52e8e977963e1e21e3064b5807c4db37eb7df73c82b7161b64dcc0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM6P42528658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51a0bd72b8beb3c5859b57f3acf02765a8391c4220b64f9398bcdc2a680778f. 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/QM6N22598469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52199bf6f4a551678465b8ac09bcb1a5c5e46a462ad9d7fc89683dbb262837b5. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:49:02Z), 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/DGA062551922.