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 0x0a3800887ad0ac93b9d27b63fd864c61582d57f459e71c2ad8476363e0620ebe. 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/a07ff124-b341-466c-9435-b218e42d2b6d.json and https://artists.proofprofile.net/proofs/artist/a07ff124-b341-466c-9435-b218e42d2b6d.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 0x1320b7181dd300b183cb6837e741cebd4e3d1f4709c83c1ed2b1d612256c1eca. 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/QZMEV2275217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1320b7181dd300b183cb6837e741cebd4e3d1f4709c83c1ed2b1d612256c1eca. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMEV2275217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac747541e467366b015969a9c3453798fb878e291cd7711e0e8c2373d52967d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZNMY2316705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d31c0315bf8f9fdd0fd2bbf4d1ce9cb906ee35465612802599d131bf7dc2195. 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/QZNMY2316706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3601c0d59172b5449b045466cd57940295d1a50740dec477c74f1345ada564. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:04:42Z), 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/TCAHO2326837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa538aab02c6e2cfbc0bfde7325b058964b5f7e099fd7a0b261eb484e076064d9. 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/QZNMT2471064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d4eb033588e8afda13f118184685acedc615a91d1424fe9123c069f69c71fe. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNMV2454236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd047a02f5b18ff8bcfa06c734dd6c9b0295ef4f56e2c58ee1b07d720af89a1f2. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZHN92598747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5606aa33df337a7a6eed62818a6c33700e157a8014788c3fb9d77f60022e1c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:01Z), 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/QZNWU2538051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5606aa33df337a7a6eed62818a6c33700e157a8014788c3fb9d77f60022e1c. 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/QZNWU2538051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31563697094bf099ba4d12a43c4b049caeaa92adec2078f7ca6d66b5ac6f2853. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZQAY2598557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17520339316669045ef79f247b8cb7055686e64e71c56f58e865b09886f7e12. 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/QZQAY2538517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2d4b0f624111eccd910297e4fbc0a1690b565873ad4365480b4e3b8b4bedb3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZQAY2548534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31563697094bf099ba4d12a43c4b049caeaa92adec2078f7ca6d66b5ac6f2853. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZQAY2598557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59649dac5d5884d08d4d19a3ca0992f7aa144ffecbb0eb0ceb67bbc6cd54987a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZQAY2535949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1328ebf4fd4144eb3a40b61d04f9eaf8ef8763d46a3158d55768de5171c39db. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZQAY2562691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4e5e0c0b4ae46416f5fb5f1cfc024854e928a0a644f004b14e609a1aba5ad9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTLA2504953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c79b3688380f2b335b0d7cb0c1f0933fb36ba3cd00d510a87bfe12c4ec3b8cf. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:06:11Z), 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/QZTLA2529381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed8a2cb378cd3afcf397ea15c054c247ee1c33443c78373b18e6049e7c22202. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:35:21Z), 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/QZQAY2547796.