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 0x27b507e683583351d82a6eb7817947ed33fcfc6363224f54f02744ca110e3782. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72f66adc-b6a0-4921-9e4a-302875bc2dd1.json and https://artists.proofprofile.net/proofs/artist/72f66adc-b6a0-4921-9e4a-302875bc2dd1.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 0xb26761ba12f9bec1f596d92dbef4b272aeb96cbe3ec39bde6fb673503e509d84. 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/PT4IF1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc0bebac0ace556a3177aeb89d0b4c513fd923278f8ffc7b966bcc9ca713d9e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PT4IF1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196a417de4332ada08a80b522519f63d7840e8d0a7625cfba548c010cce8db89. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/PT4IF1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa925adea74c13eb4243de479ee4cc52c627b50fe41cb77ec4dcfd7a057f5c776. 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/PT4IF1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99da3fd80905b384102da7954d53399701ad496b2732f79eb3e199997a00d686. 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/PT4IF1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf211e9753f8d52ce788e2eb058e1f13d98d388196923444333de47db9370a0. 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/PT4IF1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77044787922c9c7a002e141bde8b475b5a9e7aad10309d4645fa5f950c3d4c6a. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/PT4IF1900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e68c4d35d6fd58426ab9bfba6cc0eb6e14da52f91fc08a53caf90f44760c112. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PT4IF1900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138154159e9071c45def9359af4064753bcb48a8be8a6f5eaac84bb85ae372fc. 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/PT4IF1900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ce16a785fc4456a16901b450ac2ecf1aaf8c792081c226a68769931d512777. 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/PT4IF1900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6633d4d3abdb3171d51cc43eda72ab858d9eb9c2111cea6ed5f3e667c26494ad. 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/PT4IF1900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ab339cda01d1520dd3d719e7efe4471c9685fcce240a85b2a62514e68e4ac1. 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/PT4IF1900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a204e4e1fffb59936f68c2efa775963b7bbf8b152c8ffb159376115a95fb5b. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:41:47Z), 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/PT4IF1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d0522d858ea8017181f7a49d74be8bdc0ddfd78d896eff5a2bbbe871147774. 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/PT4IF1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c8243d2deb183b3ea01057126e6c89b7a4f25f99bb1ea18f7e38237c2176a7. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:48:56Z), 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/PT4IF1900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc183881d1211905d658d1b26c9bee58376bea1f157ad6012f6f5d3c70c2595. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PT4IF1900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9618988467a1813621e20e359dc4d8ca9236a7de0038bece3a22e6496621e76e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/PT4IF1900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890727cf227b52165e57dea4f483ac7d12d0c88dc27b37690157758c236cbc85. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T23:02:43Z), 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/PT4IF1900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e26f5e56674221fa192af68a00a79012cb02ae886b104104a7c3e4ee434842. 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/PT4IF1900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c231d996108422883b9130e3d2a13dc85a03c62a54bebcc030081ca696f28a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/PT4IF1900062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cc81226bc93dd9f12b36d0a959dc268d53af9f3a8c03b4cf885ce339e8ae5c. 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/PT4IF1900066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036c2062b670aab740833c93dc7ce9f24cb9d50fbd974c90d56286713534a3c1. 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/PT4IF1900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4927b6b1d2437a306f0a7301bb9b3880fa81fce5bad317957f68490208c0dd35. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:28:19Z), 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/PT4IF1900078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee92d9b08b07484cc18923cf1cf2e19bd9268b4728aed09275651bd63369a431. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PT4IF1900082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cf0f9765c45448cbd0a2d045bbc01f46840182fd874e3eb08db520f1319f38. 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/PT4IF1900083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bac02386733ad27c2a3e879d379c2ac56f1be62829ed7edad181beb4a9edc8b. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/PT4IF1900085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc038589814df548805e68e97f7ddccfce2fc2bbf2ff597e7e0b595ce58fd4b32. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/PT4IF1900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a538dc413bfec29a300dd638d28f8c60c8c1b3cd921a8aecff30db6ac18bf1e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PT4IF1900088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac489405fd7a58f9556cbe2eb406bc1063c7f3d1dbc4c2c4e4a59cf914b5fc2b. 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/PT4IF1900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03a02c86184fc9be9b21ccdc68f6508305d61cc68f516e4a93092fa8f71e7f6. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/PT4IF1900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe755483eee6b5e0d41387c3d0e5b583816529197fab36c25da173122e75193e8. 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/PT4IF1900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1ccd11fb0702c4d6fdc4d9784181bd35da5cebe39a61fd3459b009185facc5. 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/PT4IF1900093.