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 0x38bc832ddbec60ccaac4d0b58e3e9cdc9bc7779e9663a54ff42d804d4cf86e0d. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2dc8f14-072a-437c-8270-6f0c0266d721.json and https://artists.proofprofile.net/proofs/artist/f2dc8f14-072a-437c-8270-6f0c0266d721.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 0xd3776e1e1508c0b09b39a606f9a2128d602a6e3114a2f0d4a0200198af34ef79. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ5FN2145557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf66487ed26327622f34222e75ac6aa7cbe1fbb89133fb25b9bc98b2514b3367. 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/USLZJ2137434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e81c1ed6799d2518c16ffa091d289b5c5aed994576fcd6169f69326e7e2b4c3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:41:36Z), 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/USLZJ2145986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca135fb105146e56e8188be47388f602422b8ad9e112ff50fa99482433f497ed. 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/USLZJ2199525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84584554ee9917451c1d8b0df649238df636e93630a645f503ed9c41a410fbeb. 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/GBWUL2103208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ae2ff6a5009485d16f789b9715d3982380bf9b1d9e4ebbea473561dab33e22. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:52Z), 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/GX5MY2170260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e55472ab38964775d1c8d36534f14475ed874bfd1d513ce5b2ea78c4ee1ca5. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/GX5MY2170261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f265f0d21fb28dbe22ec33dd1d86e5b1be3a5deee2a171562e23275c450c76b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:35:15Z), 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/GX5MY2170264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98de975aea06a5ecc3f7f5a1cb70e04ddbccfc31978403a893ab3ed657a48900. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:06:46Z), 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/GX5MY2170265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512a3caac3b6bbd5952a89d4999fb33944a521246f479b1b7c89b5eb9fc86bc2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GX5MY2170266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63177870b767424ec4efed6f54465b9c72754f0e4e384f3725c44f978390970b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/GX3HH2259933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768e5089c96f255a4fec78aba68c96dc518e33262c1ae6b9a262d1ab6369a7b1. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/GX4R52266924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211b0b72489b9c1cea06b17cf31e7ca0ef486cbd33ddcab7dcbc550de538c44f. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GX5MX2270163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1a229f7f82574bc49267d74318c52104dbfdf30789c44f5e83dba9316aae9b. 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/QZTV32417613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b62ca7df4c2cd350497c879cbc066ed415abf496333b86b18f1b312dabc091. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:41:45Z), 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/QZTV32417614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2ad9c4aff3979874c7ef68caf7a826327013b753b1dfb0589eeaafc33b26dc. 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/QZTV32417615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d201d99d2a47fe604391629a542783d194f494d918aee3f8e913b8b46f4c4e5. 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/QZTV32417616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9fd1f0bf516fc1121214b80284e9e0fdb2722d9ad9826c274d7dc7cfc7c132. 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/QZTV32417620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc384ee88857e98cacff106d6597577503db2ccb5e95f4a7eb7c33a46081ba1ac. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZTV32417621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70e39abd7c4853adde28e4ec70cea242596b497d086bb664112b81996725ba6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:12:04Z), 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/QZTV32417622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37ebbd96e1ee82ee0107fb99fce280300ca2df96f10efa40bf0127286a5fa8f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:10:21Z), 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/QZTV32417623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b475e95bce5c1e8c5f6569de814c7ba268cfa82296f2bf71ced28a8dfd7035e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:04:29Z), 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/QZTV32417624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf571e9db054319f3f4fd6fee04a19365e761da7933d5b012eefe1b59c216f163. 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/QZTV32417634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe039ef447451eb2676f4a939bf1a1aa00cf83e4bf189fedca3b7f3ab07eaea4b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:12:04Z), 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/QZZEB2459688.