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 0xf5e1fbda97404bb0fbb2b1a542a82faf23b5529c411ac70f95b258c8c2ada7c1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/730d3927-f7e8-42f8-8d84-c3ddd6a7443e.json and https://artists.proofprofile.net/proofs/artist/730d3927-f7e8-42f8-8d84-c3ddd6a7443e.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 0x01806e8ceccc0336dc23d6e033ff90efddc7f977a1c90dc0d00e03b650c267ae. 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/HKC992724821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70672acfca56b17a32bedd8f024e237da262dd58731eda664a4a1136fbcb609a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKC992725214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae4ac368079440bd7c8fed7c75af5e93c9e33fd56d71dfdfced38e08b10e005. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKC992724377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab1e5c02da60647b543ad594da64af97dd8262cfe1fb9e6184a46a86019dcc7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKC992724039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1862712230d6cff7f6e8854411fdcaf9f7e7cb4a5d2e5957f08188bc1388df38. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DGA0H2490549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587bec49da6adfcc964fdf6fd1360793dddafb4e6635d1acade3d96f07e48e4f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKC992524554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44766697dd3550ca0b56bd2e9c01d3bed6ba7b65ee30469ec7688edac612361. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX282481368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa732180cc70b15140a01f5a0c428bda8a8f9ee3d0c6f2b01b31e078198fd4775. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX202445153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b831cd38e7c9a0c927d0428423096c4da785172870ef84c81d25bd1f1e7fdb8. 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/FR96X2484631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633b4712ccc41dfb2ad6304938f77e1d6270d2cc547bdd153904646a71c81b09. 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/HKG731683076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5de494c6b749e6a0515de028672b6dd60bfefdea804661c50f334d54925c2c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWDL72400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159055b0f050a0c5f6f597d7f90c1f6eed43f1601f9bc420e93878756a3aa4bf. 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/HKC992325214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb5c6e048035ecdef2a7f8fdeca0affb79b3ed8dabf3f5f61d1e4190045670b. 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/DGA092328350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f6df8879f44e5b003657eac94c57930174a10f1c4dc490b31c90ec2f08d01d. 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/HKC992324880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7457a806ddf2dc1f897d6a347b139be99ce8c5c931b6ed455aca91e4ec69646. 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/HKC992324891.
我曾遇到一束光 - 现场合唱版和声伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd11c6ffbb72b4c2a40ed2492a6972f81975ebc14a2ca19f45a5b62f0f358ef. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732374198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ceb9448f5923dc357ba6ed5c4a38f9049a14edd6b58259454eb138157bd445. 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/HKC992324590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d6b15e7e1606024e31cd075f1b5a854f536e167a4d98bed716f7949da9f64d. 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/HKC992324476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1eff220f7fecacf8275b2f5f918dfaa6b7b8b978dae59acae5d34dc9f3795c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKC992324335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd9f9fa85930f1b1061f9a7658f4acef778dd0970844c9349963064eb1b849c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKC992324298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20985767390b2f70eaae2518c8dd73b1396532a482fef878713753b57cc1822a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKC992324224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cc63bd074fc0e540ebec78e80460f232e385e99734192643b377d9f4189380. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG732314877.