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 0x6ba31cf491c6ad2fad5eff64e059033fbde44a8aa08790869ca8c84548b330a7. 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/beb0279e-8833-415e-a4b4-9480b8454a17.json and https://artists.proofprofile.net/proofs/artist/beb0279e-8833-415e-a4b4-9480b8454a17.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 0xf8bb5bcbbf69fa53c6f98664dbad89621bf95a0b410dd1cf2290cf570d3ad590. 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/USA2Z1110191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fa0ddd91486717de0adc929cebe305c46607cf79d0ff42016e8908513ce265. 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/NLM791200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1ef7d288e8ff5a78e344ebf90be4ff8056921e1a1224c40e6e4aa990b1f08d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:25:24Z), 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/NLM791200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924864f24bbb9104089ca17160f4c4191e3141568fafd13c81f649b1bc6105bf. 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/NLM791200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a944cd582007bacafd6934fb88733819b35e403e61e4a8284826720299889b. 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/NLM791400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efc09be067537984fa2242a7e4dfacb4780730df31788e4f41a102919bbb312. 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/NLM791700107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b6cb06f6f3279fba8c8a70cd552166572d0943846731848797a74a8bcbc2f5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:25:54Z), 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/NLM791900180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0f8ae9a848030a915f2034e216036b816237478bb87c2bce500bb21c128a02. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:28:25Z), 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/NLM791900181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca18cd7194a18d209910cad5655b26fe806c1dfa6e19eb28916324d50a8de52. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:21:28Z), 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/NLM791900182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129c3f701963cf434a8c68cdf0aa658d3b69b530ced7a4a26b5d8b378eba9926. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/NLM791900183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7931d61705d8426e958d155ef0a3a29a282b9b568dd9eb968215745dc844f8a8. 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/NLM791900186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ade91e9d7727bf6785eb7f408383403ae1865613c111c28e111b0ed5fb03ce. 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/NLM791900192.
DJ-Kicks (Maya Jane Coles) [Mixed Tracks]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e96d5c447e616a5e339f1ae6eb3d68f68c9c1569219da59b8255c6a42430774. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEG931290003.
Leave In Silence - Claro Intelecto 'The Last Time' Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059c785c9ef8a20f4d1c7d38fe044a4190cf05e1e10a3efb32a0d9c29d296e9e. 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/GBAJH1100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee27f00f2bbba1ba140819ff021d7a9fda050f728e6276422cfd303ef3abeaf3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEU671000141.
Keep Me In My Plane; Hunt You Down - Dj Koze Hudson River Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1f20714a9948860e63a9882190d3c3f0ae2af37d18b3614cd11403012bb6fa. 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/DEBY40600469.