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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5abb8cfceca64c80591d710aafddc0464171f8ecc1dff235b554e236865779. 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/307db16d-1763-44ec-ab35-302e7d350f80.json and https://artists.proofprofile.net/proofs/artist/307db16d-1763-44ec-ab35-302e7d350f80.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf0ea6dac1746de16a92abbe470a4bf22fb965d68ea456338dba23d0229b3b3. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZFYX2144693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f38b9ed40d8fbceb74fcca5b1409c22a26d8b10c4a3ae11c1be803ffabd2ba7. 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/QM4TW2206485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4240ef3dee9bd36ba442f76542a75b1cf7d5a85c64a66259fc5831a9db99ed3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QM4TW2241776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e08ace0a3a99d3b0a93437235dd2ecd27d54750d967a550381764e76d7f5ed. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QM4TW2241780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f38b9ed40d8fbceb74fcca5b1409c22a26d8b10c4a3ae11c1be803ffabd2ba7. 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/QM4TW2206485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c6e1189642290da4f428b6e597acb27e898a0d8dcb91df1384284b602f2c33. 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/QM4TW2207345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a59bc3ef8280360e8bf7971994c218878d38e9ea063ca3e2276dd60e4c3356. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM4TW2241788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1dac88577006219aaf964e162596cb7c0aacac185d677833d80ba1201d9f87. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QM6MZ2269271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73066f5c9f6c3b922cfd7b5b883c02d61bf9d5694e8f7cb88bb41ede252af638. 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/QMDA62292998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1dac88577006219aaf964e162596cb7c0aacac185d677833d80ba1201d9f87. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QM6MZ2269271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23be76dc44f56a94416544f3123826031dd0393dfeb20e1fbf2f130361a46234. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QMDA62293104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d2c01490d2e2f3a522520150c08e4b6f74440164223ebe947a3fd14bf66afb. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QMDA62293152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370b07dce540cb8ba099b354d77f574bdec8e7db872c73e7ab94ff55cf92537f. 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/NOUM72500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3613690b4f834478e1e7cc1331a89f79a34432d33136008a20b475171670e0. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/SE6XW2537788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed59c5960f604734743ae436c59f23caa47480896452fda4a222500a3b63bec. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/SE6SA2528878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8752e5b15e3f01d1d8fc88350cd9307e9cc288b47c8d79c61aced5bb5ed39c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SE6XX2507254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c06e16b77d750b3d8a1f09e0b18bcfcd44005b59237f24cd026862775386243. 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/SE6SA2528883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f89ae95e1873927f32f1ba6b45209b3898411e61b39e55061d16ff17b7b4646. 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/SE6SA2528884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb2022d147a885602ead66ba197b2e83ae098f5610c3165a2107e34477e7736. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE6SA2528885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646a6db4e37eff7421dde1a2458886c34bc3f01f406c65c1e8ba6ffb4c47b9eb. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/SE6SA2528886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5b59d89c7ff39479740ec827b78b7db7adcdae014c59e2592697d422704df4. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/SE6SA2528890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3f31a2a1ac039b46be97367c142c04d4ca108c5de7b07ddccf1151f960e180. 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/SE6SA2528894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac42cc2e9a19240c0b71afcb669ae1ea92097539e79dc668799f131b5c1cf96. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/SE6SA2528896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6efe42f6e606c357669d951101104c9129b1aa8b399747a2c28381fb6461f7. 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/SE6XX2544024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b0715e2e9004417830fef2a32f63ee08ccd9ba0509b20dddf5151af60d88ef. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/SE6SA2528899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef0a8954b133c2c9a1ceb941b493d9b46b339881f64dc0308d1fadef49ecf3c. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/SE6SA2528900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e9e94f611d92dbb30d1870554a395c383001d105c130e270eecc97724db1d5. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SE6SA2528903.
Ingen Fortau Uten Gata (feat. Daniel Obede & Oscar Blesson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5318e4e17570fddbbcd531f78f855507cda74a84c678ded5625983f2dd5cf9. 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/QM4TX2363436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb2850088fec8fdcdbd9816a3a04c9e4a2c8e2718396c7f0869be6a1f251742. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/GBMA22400959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0aa5b3d82b15085a71e4dc4d9189519c4301e784d949acc09e132ce0e6871b3. 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/GBMA22400960.