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 0x4fe4f5f774c27187672d6d4226d9af395d33d38078a331e0c7b99a74cf74fd42. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c56d7716-53b5-43e4-974f-9510ec0aef23.json and https://artists.proofprofile.net/proofs/artist/c56d7716-53b5-43e4-974f-9510ec0aef23.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 0xf45171aca2a0684c79b2bc6c5f1c6c0de109863a9b23b80a10e8dae7f2cfa4bb. 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/QZPLS2028962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab139057e10258949982836c332cc5bf280a0913ba2ca5610f518ab550785da7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFYY2118270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eacfa01a1a99dd18ddea9775c87a6be41d27dca241ffae4e34a6ca4cca4b3d6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZFYY2118272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fcd20571411e610894b0b3bea82533cacc9997a8049c74fa90a6f3c0a83513. 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/QZFYY2118276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a5898d304fa8df2895a610f26ae9cb2b54b14811ee2ad5524342dd0b0a633b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZFYY2118278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c792ab4e9cd3443f33fb678191091ef7df2a59b04bd7f4660658cba2d1b11b7. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZMEN2120905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e5fb6c770b36eaaa7e397a87f19ad5541ea4a00eb123f1f52e7dc17bacaa6b. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:08:21Z), 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/QZFYZ2310036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795310aa64f8be3449d6002b19f19df991c3b17ff9b66126dea7bde7a34cebe7. 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/USZXT2351753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ccbd4fb66614ac7743a9fb599aeb83cb54ded489d7791560f5973fcf52ea01. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:18:30Z), 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/USZXT2351913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c499c224a7fbd8d7273fb9ada0a32947e6ed0118ac4d9869c4df4d40582f904. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USZXT2351914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0853d850a7c7efc17c64fadb2612c46fbbe63c0bbb46c76257c1f2f4ad53aaa1. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/USZXT2351916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29b9c03ed857838fa5b993bc803468820ca43bd17edba1d308f7ea8f12820bf. 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/USZXT2351924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6294b8a80682a0a123e503874f3ca9b25dd8eece97a3dc18333f74494a6d4be6. 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/USZXT2351925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021e913d51acb3afb92f16c1822abccd0d222ad223440bc2c7e11fd49e64fada. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USZXT2351926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33128f95131888d461d81971440042dd17148cba19e04c8a475e837f46c0cc7. 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/USZXT2351927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197787a1b410a06f77bfb9555dabda4a7f156d6b0704e03c5ff60a8cb81670b1. 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/USZXT2353154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2908c84c1ededcc61ba6350d795d5152e39dfe1dbc7baa273f6baf3f32f5bd3e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:53:33Z), 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/HUA612402607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecbe3dacc10a8fdf3a76b42413d07a1bc30da2c3e422fbd12a2fd287863c9af. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/HUA612402623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2f55749328e1b73b9dd2ffa89f4a2fdb47c527cce4ee65581ac10722d44c5a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HUA612302726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6b29c28d43bec15badeb94cb7bbf1331983a39f3285b5509cd38d343263a6d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HUAMV2100194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a7fea8380acc2d9744f26c78187b3556dd87e0a4c3224b868121f1350f33a5. 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/HUAMV2100271.