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 0x8968f8c5a693627d98d6a81c9767aa6b435a192de8de4144ed5ddb5c07ce2c77. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26aa1e4c-25ce-4901-a921-63577addfa24.json and https://artists.proofprofile.net/proofs/artist/26aa1e4c-25ce-4901-a921-63577addfa24.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 0x030d29fc1c0ec701df837a7536be8e779182501eb1170a35ccd5fd582c10b8a2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEAN62301273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8e30afcd0520780bbca1f9bc2372aadfc54fd368e19722c8a3d02838cadbdc. 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/DEAN62301277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27eba2fa7ca3ef611745d4a94122502dd784d0fddfad5365c97d6e0f93a465d1. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEAN62301274.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202714482b512f423d2a9533f7f6298c858b67e332323b1295644a2f3f1fe054. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/DEAN62301275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ca048a9c5d5f2c1190f570a50c9bd5958000f9cdd9c043239b8b672f1c17f7. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/DEAN62301276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8934bd755115175660372bbe7f9c294974e61d8574f14bf0188910f653b367. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/DEAN62301278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818041366b8cc67257109eb7cbc7b4defde60dc94d0c38c546b3be018c084fbc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEAN62301279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf132f682f814ac54d144b6a786753168ca1e617d068ad31d5b5a91b7c97319ee. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEAN62301280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec50e25e3d1d8e7bb3f3750328b2dac3d2784549792bccb82c0a34459fdf3d8e. 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/DEAN61900999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbfc188edec134091a2fbb2bfac74054df1fd50f83829f78f8d67a9cd75faa5. 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/DEAN61901001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee7b0b89c7c3d71856e29b9e1a2443dc399ac374a1bf2e942ea919b180bb6d3. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/DEAN61900994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f546ee55a2943295325b27d3a62a1892a2c23398353aa3bfd3d5b79a48dfe4. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEAN61900995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acb761540b32f69a4a03641f53039d76fcb069fe68d8fdaa26a708e2813a1b5. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEAN61900996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb885f8711905df4ea2ebdf6b1c4325ff4a291c28d52d62bf62b8a5812b214e62. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEAN61900997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d98eb3a9388f163ea670a7cc9192457d83e50d644462a798a0bf48b676f7a1. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEAN61900998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3b45a931d0fd2dec7514b5d04459d83decf38496009e281f78055e61a43659. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEAN61901000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffb0de43629d65faa1d1b6238a31c143b453144ee15cc8c2e05a6e833142ae8. 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/DEAN61600757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6512a7df6e4b06733f02973674a2dc11445cc442b9e82997e9d9e544c1728882. 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/DEAN61600758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245233b6cd8e440e08241293ac1980293941dab297475f35f04a02f378790eb6. 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/DEAN61600759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9c204abcd82f71b438852dd5af0b367bb14e68f9f8e98aefe5280b3e536e67. 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/DEAN61600761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5616a2993787a95d45f2a3cd64bf6ed7704b1386ebb6445b3a53acb615b980eb. 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/DEAN61600762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94beebf4764d508c7258ea1bec4b647ee12719816fe319e3d458b525cad0a777. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DEAN61600756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdce47659e278c9b4b5a179f573c480a2b457d6b3afede6875e5b57ddee69d60. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEAN61600760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16ca68798d64a8d685b5fd2c63e258fa88235f7a196bce593566edf41f6dd01. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEAN61600763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee2bd67978e3d9bc31283f7be532e88c845b9501302ab812c89e1156a258aa3. 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/DEAN61300609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9d05804d74df5d8640377a20f6d36b3ed2fe9fb1baf66ea87dcfea13fd7b9d. 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/DEAN61300613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7bc4f0fa8e32a4e0a011b8e0b8a5bf0628674e334285b089a81e60b8a47dcc. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEAN61300608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207d847ad0afc341ea8b0964a0438f8bc07d03b061b559108d0fe12a11b95392. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/DEAN61300610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202005f49be67c399027f837374143ca585dbe4189fa7e8fc2e3bd59d50316d5. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/DEAN61300611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf2a81a5b06b85785d6cca82a179fe1583aedc3ec0a36ccc6b1a237b09de190. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEAN61300612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efbe6fe38181129a1576b0d06217eb3e6f118f26dc95ff2ff853161e34c0209. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEAN61300615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d73d1598972037118bad62798de9ee1bbb1e129be4bbe954b5822b9b8de7fd1. 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/DEAN61901024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a2a6f5adbbbd228d86fb54cbe508086d77b56bf3a6d45ed7d64e4e9e15c74d. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/DEAN61901023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b7f2eb593cd828acab24e5b5a895744d9672b40b52db061fdbdb15bef0a886. 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/DEAN61200508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74837d5176f8b9ba79d6c28e5ee404f8bb0b7b4ebb5b90657c07d407d3e1790b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEAN61200510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125df5823bef3da7ac8ae57fcebfac788479f22555901d83a1a65665aa4614d5. 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/DEAN61200512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d321984901f584ecf79567850724016aa35e1bd5b884615dcecc7465190abd6. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DEAN61200509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbae47252beea6932fffb10e0e40153ba430fad74acf90e0b42b1f2836a38119. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEAN61200511.