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 0x09b2668a350f6210fa5b9c733a0dfa2a06ee68f6579dddcb170c629fe474e2ce. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc527b30-6401-4588-a08c-14f811a6ae9f.json and https://artists.proofprofile.net/proofs/artist/fc527b30-6401-4588-a08c-14f811a6ae9f.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 0xf4f42b31360d4539fe0499f6e3edd3eed358fc89d9f4c08db5bed43473d12262. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEH741902327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df287a0b0d981daf73e420247f0df3d19edd608e814b27c8705d2773cd163b0. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/NL1AP1948556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f47f23923d12ba390ce0473db28309e0230ab3736c499e742c7bb81432c8e3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:06:41Z), 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/GBKQU1960163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1cf296e9013966e69681c05b4094838ba23735170b2eb21365beb89441f217. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:28:33Z), 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/NL1AP1987646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aaca8a604480ff7aab97199af64572fbe65b4ed35076746643491fbae0155aa. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:32:38Z), 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/NL1AP2025497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3436b07985cb0ae0b30331e5868db4d057763d0e5f7e43fc9dacefbe9a5c3649. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/DEH742011057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62504c0813884d1ae9fecf1c9e9f7cbf1ea59b9f809d1d4757c31044ce643b07. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEH742011137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11f84b0a40adb34544e789802014bdfe7445685abf741205973d6a76a6be9ce. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:05:39Z), 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/UKR6V2050867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a09afed2e60fadc8eb33e3e64d17bc0bdb26007f46a18235c5d271121fc9bb. 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/UKR6V2050868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56513816f3fa03af6272d95a833a4e3bf52ace2bd539b0cf924b309197f194be. 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/DEPI82106799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b670caab3dcf5f899525fbe4990ab04e788e0be59d431a75a5141c57ba0550. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:51:35Z), 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/SIB152200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7f740d5772202d3d5cab7e8d852d68327ff2d76c0350064c79993359400130. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEH742229935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85cdeb6b267ca7a74939704abbde78f5d55bac9ba5f54e8433b111fc1fdbfa2. 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/DEH742309289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f02279906e90b226b693a1d1273cda42dea79abac0d4135ebb7eaaebffb7523. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/DEH742319559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3028e5d2141ae31f29131b247088d60df4621181281985865e01ce9d7c0416f6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UKU932420003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84766de3fa7e14a9e903a63d2f22b60e371ec6fa8feacb90125b804b89b07e1. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/UKU932420004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dec771f21b99094bd0329fb99942c0e8b1c6d20b50f56517fa862bb7ea99bcc. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEH742421794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba489a7830eaea17a33f34ded19a6a81f38efd8e6893abdc1bca892bb094c8a. 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/DEH742423582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bfef188f79d93d5efd8d298c4a77750fabc97e8001f8d21172f4ee593f77ba. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:15:21Z), 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/DEH742425409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3d5b45a689a18cabbe1956445c5de277a2725c9eeacf7ec4f026d2395d01bd. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:08:01Z), 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/DEH742427384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935efec58e1a62cdc1ec1d754d8f49fc7e28de0eb7803506829f45f0ee3192fa. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEH742428530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bfef188f79d93d5efd8d298c4a77750fabc97e8001f8d21172f4ee593f77ba. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/DEH742425409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dec771f21b99094bd0329fb99942c0e8b1c6d20b50f56517fa862bb7ea99bcc. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:49:17Z), 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/DEH742421794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99820627776c838b0d6c70f2e1dc9b964ffac280719773b3e2c9d0a8ba779f35. 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/DEH742418551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba489a7830eaea17a33f34ded19a6a81f38efd8e6893abdc1bca892bb094c8a. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/DEH742423582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935efec58e1a62cdc1ec1d754d8f49fc7e28de0eb7803506829f45f0ee3192fa. 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/DEH742428530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7443ff06cadff4d55ce99db3bddc47e643929af5f14529457d8bc1fd957bceeb. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/DEH742420253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fbfe598328758c66e370332c37076b2309f0ffb58cbd3114c23988e025608b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITB841800618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179ca686ad15a8c7fa0e12f21f8edc9d7084783168e7c4e7c8606faefbd4eb45. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SIB152200013.