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 0xdd7eddb7c27bbed4a44fc0b86cca897ec53d35f2cd1a922a12823dbd790fefa6. 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/3b51b545-754e-4d2b-b736-ab8fb3c47c9b.json and https://artists.proofprofile.net/proofs/artist/3b51b545-754e-4d2b-b736-ab8fb3c47c9b.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 0x628bdc36029bf6965fc43e6f1120f6f0824da2485f6249f977cef5b72dcb8b98. 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/QZW9K2252639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ede6ba427f6a555c76908247a2ed34bd6c4ac895501d004d8bb45222bf65ec1. 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/QZNJY2304864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c99f2e1774c031363fd5ddca82ff71b8309817ee62e0992c49ef260404f9dd. 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/QM7282004738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d814ab548bc2ab1d50d56a5f7e355fe317bf47db74ccbd2b254c55d5c945a4d. 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/QZGLS2210454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380b79767d1384f2f5fe3c5f2a22d6f1a5f79ce30dc897f662d0f75d898def82. 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/CLAA22400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37301c63dfcf9a6a230ca5eddaec42edfa150e4d6b331bd2b95f3f425d2d76bd. 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/US7VG2438733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dede6b36e916271e8af1d2446484747fa61348f0640ba3c44fe273cde3cfeaa. 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/QZNJY2395434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513c03ed5b86c2dae3d2114c52745a243d35c11d60051b707deb6aa32c5aa9a3. 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/QZW9M2263069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975254b94e76240bcc6c4e9b7a1ff173a026476194c7761e0b1cf8666770cd28. 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/QMDA62210003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0363fed73651144418821683a60d968a73e3f8be9961c20a75dde79bd598e91e. 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/QZNJY2225576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23957378d57bcb26c963dd6351a628b8014b14fa2dc834ccbb9937245d37e318. 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/QZTVM2153694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf18163c912e5d0581e63f067da77e7aef02c35a69b24ec10b8760823fa89e9. 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/QZNJW2147848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7af241f12a78aa5d7f1a0c533227d9be5e586195bb24a1362914e32f7039f23. 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/CLEM42100843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb7c1fe26d723f498856a8c67426e46319633b62cfd540bd0386e8bbd3b17c6. 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/QMBZ92177817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25376d50e1cd7fbb3fc22df3c227ac877fa4c75527960681559c10d60e80d943. 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/USLZJ2116819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd582c10c45890dab968920e4741969cc27f4737da064357a88a511ad59c09bf6. 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/QZGLM2131412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575829acc218a789079eb299215611a928e7ee074dbb23b37fc086cfdde8c939. 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/QM4TW2151886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197e01d2c536a04851ea59f076e147d1c4bd8eb88105613d78aefd309623a048. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4TW2119129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9bc4fb955f9232ded350a9f492cc99b46a67b44e0125be89d3e6c2c75f66d3. 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/SE6P52000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06825db2db9fc7366b50379664fb5f7c041b592ff73451072de353b93db6124a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBWUL2053312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dbcdebf5413b0f5385b1c3b8af2792dadf3228e4e248009b6dce157a8ce5c6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4TX2086704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa58b1971f0d292293217fd2ed46518cf9ccf50d8a9f2c2df845e3dd427ca4e. 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/US7VG2016582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cf0ae9321b81e94a8368fdef8286f4fbe6bcb094768312252e756585d86a26. 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/USA2P2001433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d709423e9d23a5c03942350bf2f3f900816a5f0f5b2a7693548708930c5a55e. 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/QMFME1928992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6232c0a768aee128ffab0d0c92ac8edeadc7bda13dc0c671bde56f5b33e79f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES50A1900621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d9a6fb928ab9d250bcb679704dd04589271f9f2aab0b9186f831bced40ade0. 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/QM7281905007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06def5671dd373ff6043d86d62b8dd43a1e31394ce0f60af984561f42d18874. 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/QZW9L2470677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9382ed9eb935948ef92fe6b056054efaa31e0119d6e163b0e37497ea9f0de6cf. 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/QZNJY2379576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f6c854724fb4da09529410e1dcb3cc96eb447f08ad68216d0d207cc9aa94db. 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/US7VG2437538.