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 0xcb561772f167904d81d5ad9c05fd3db8991c41469d4055f4178e673ff303895f. 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/cca17288-e8f8-4259-b21b-afaa4dbdf670.json and https://artists.proofprofile.net/proofs/artist/cca17288-e8f8-4259-b21b-afaa4dbdf670.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 0xd1311928a9f10a69e131ffb47ac80ee54b14b473db0b48b014f3802a31f40822. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:52Z), 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/GBKPL1823731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844e2d1105ff6c077045000e7f8500ea5a2ad23773b5b6816dc85ceced3456ad. 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/TCADZ1818698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e20281d539eac47f07c6a596a1306c8b38c321268a86e51fe0edd329947046. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCAEB1903927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc794716ae95c258ec783b32093c0930740a36ee24022854fb26669311ba14645. 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/TCAED1932730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00b34719151a6de5ac668bd0aeddfb745def6f18d67f600e1340496a9e093e6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:43:24Z), 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/TCAED1932772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7347108269a1a8310f0fa4d59385609aedade375b5f43fdfe9c10ad069e4de. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAEE1942629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5c9fa0531ce54ea03de8e4fbd189e7cb11f25eb17bc2b981b4119b4c74e46b. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/TCAED1932784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df12209c741fddb08bc2024d6937b391e21779bd1eb28335dd36ffcf70888cd. 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/TCAED1932795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0aee9854d0911447cfad5ed75c9f0a29f249261cb930134734102892862250. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM42K1942640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160944723ced6056d45e1fd30c76bd9943f16676abd48cc3cf23b1b3711025a8. 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/QM42K1913402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa848ad968a63a48c0e6dd8aba2ec6dc76f088b91d11caaec5133b369df486f2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM42K1953772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8acd7d91639f998ef51723286719ec687d9786106a9a8e5c7d9892754b3d618. 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/QZFZ52112271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13042156a84fd896e55b305fdee0e8a6b8eac827d527e649c3dfe51bf79dbf32. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:03:15Z), 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/DGA052371079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81472771509fe13ea85ad36727f9eb1b7fd3672759c78fab6fdc8bf85b64371. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:48:08Z), 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/TCAIS2400565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314b0c0c573f1b601f23bac6be845ec118b75b8cbc7378353df094ecd1e9bc36. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:32:39Z), 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/TCAIW2422008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66a1eb4c40e873f1f44fbf731afe0f2fffbb6dbb604508c120c266dc2286555. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/TCAIY2409459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c39d9507bd46811c49aaf2aec11587e96e80b2361d2b7b6ba3138b9ee7021a. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:41:39Z), 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/TCAIY2409522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81472771509fe13ea85ad36727f9eb1b7fd3672759c78fab6fdc8bf85b64371. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAIS2400565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982884aa2d25b8f6c34297e3666470b2e9a9cddf99578f5d6f3b76ab45a28b66. 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/TCAIY2409604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55465774fdb67a2b8bc5531d9e5b25eeaaf42377089b40711ff44609e74d78d9. 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/TCAIY2409715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3492c5ec056dd8e069c6daa818cfecddfac380aacd2d8d389df8566cd3ca7cc0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91724369.