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 0x15df0c80b29a68ccd602a8df855bc8ea6b13aebf43145e20ce5126dbeff7379c. 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/2bdd31ef-b8f5-44c8-a646-009bc1b84980.json and https://artists.proofprofile.net/proofs/artist/2bdd31ef-b8f5-44c8-a646-009bc1b84980.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 0x7ca1a339a4c08f8fb55c8e7586d739e197aca552a1416649a1c2bb76daa2687e. 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/QZMEN2111930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65532b394753d4096dcbc87214930b5946cfdcecab38e65e0761a87b3aaefe48. 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/QZWFE2411535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7974f6ee2edf9c42057ed0dd1e4bc1b18ead1fade8c2cca57b8b04a94bfa88. 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/QZWFE2411536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523ca07c01ec7745b9da518c75a04d412eff84fe3afae94f14ea8ff6e682a374. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFE2411537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe75f548f82b6a2a6f645b3dbc59791941368c702407a7c5d0e0b64558cdce5. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZWFE2411539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa8be652d3055872e33f83f652300320d45dfddb365b1e02f96a2597f6cd244. 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/QZWFE2411540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebfc15a47249c16dfc8091dfbe3bd77009bf9acd8a54c6c7badc9683bdfcf16. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFE2411541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb550ace2df38eac504a80b43e6281d690ad429911927bf4d0d0abd3e79d66c50. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZWFE2411542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93effeeb073fe0822cd6127f8ef719f40d74bd42f6435c285d83703d4bd473c6. 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/QZWFE2411543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856090cee7d2f8c3ee7db66ab1539baf1ecc81c122ec8a2894c85e431d84ad47. 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/QZWFE2411544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb837dcebf6ca8f187f864349a6af17711894d22a2c7f05c4f820c068cffc9ba. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZWFE2411545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c6682f6a272e0443da0a359b61cae3f26af07b3205a1f1877619793f0f74a9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZWFE2411546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65532b394753d4096dcbc87214930b5946cfdcecab38e65e0761a87b3aaefe48. 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/QZWFE2411535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7974f6ee2edf9c42057ed0dd1e4bc1b18ead1fade8c2cca57b8b04a94bfa88. 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/QZWFE2411536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523ca07c01ec7745b9da518c75a04d412eff84fe3afae94f14ea8ff6e682a374. 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/QZWFE2411537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31e4351418b4728200be52705d905674aa5f7b0a1f06e616e80de9b73fe6ebd. 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/QZWFE2411538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe75f548f82b6a2a6f645b3dbc59791941368c702407a7c5d0e0b64558cdce5. 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/QZWFE2411539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa8be652d3055872e33f83f652300320d45dfddb365b1e02f96a2597f6cd244. 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/QZWFE2411540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebfc15a47249c16dfc8091dfbe3bd77009bf9acd8a54c6c7badc9683bdfcf16. 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/QZWFE2411541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb550ace2df38eac504a80b43e6281d690ad429911927bf4d0d0abd3e79d66c50. 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/QZWFE2411542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93effeeb073fe0822cd6127f8ef719f40d74bd42f6435c285d83703d4bd473c6. 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/QZWFE2411543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856090cee7d2f8c3ee7db66ab1539baf1ecc81c122ec8a2894c85e431d84ad47. 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/QZWFE2411544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb837dcebf6ca8f187f864349a6af17711894d22a2c7f05c4f820c068cffc9ba. 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/QZWFE2411545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c6682f6a272e0443da0a359b61cae3f26af07b3205a1f1877619793f0f74a9. 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/QZWFE2411546.