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 0xc77c429a7824d8afe6548541768b88bbb57548beca6bcafd7ee7e743a9b327e2. 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/26ce9f69-ad38-4889-bf16-bbec2658d9e2.json and https://artists.proofprofile.net/proofs/artist/26ce9f69-ad38-4889-bf16-bbec2658d9e2.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 0x859d65b122e552d6e7f61f942435511decb30f4db135d005cf5f5a0ee0932ba3. 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/QM8DG2481302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa457422bd1081c3ee7833cf2a7bee22c98eb4aea901086a6de1c03c0f4ab1926. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QZHNA2388296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f44cc5d41b92bfecc8eb4b364c70f1ec703e408b00400c69f3ac4319af0dc3. 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/QZHNA2388297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c274c652539ec5614015005055d3219f8050cd6b7cba77fe59a3a82c9bccfea. 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/QZHN92354002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db6cff9da5ca0dedad36a2f082edf60d6668fc2054cc8a67493aa953bc5170a. 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/QZHNA2388298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ce22fb5d0d47887d81335735688c0086172a5f89adc7688f455127f00e1961. 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/QZHN42328514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f68fd99d0f9855223033d1e65a8e6f3c67191afd3d3e3b121b14c08ce23ccd4. 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/QZHNA2388302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd460abb68692254d9ee0acbce414e0c37ad5d59418131aee4e4d67c2b83b2c. 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/QZHNA2388306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefeddafbd194c631ed36b94c834b20459d13c191ad803cc45b236339461c2183. 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/QZHNA2388307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18da46de7b54c9d5aaf43a74b02580f23ebedf64c991ecf92b19c6d90c99d632. 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/QZHNA2388308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b7d781183abb2ba7639c57fb7c52c52dd3f383589a4694f89b6bfcc7ed6280. 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/QZTAZ2283834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111d03febbe912f127a48aec54b10833872b5ba8cc0f01f0e3c0297ceecd686f. 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/QZTAZ2283838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8677fca9192c6949a421e3b85c0ef73e0b2c16f055de63f1b6a234d77aaf2b. 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/QZTAZ2283839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92dafd8006e4d53b55e6d552e88deaa4abed07f654e0170e545b4a349c4660e1. 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/QZTAZ2283849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43be9a73f0caa0293ea2cb7339d5546db296addec071121f81ac1621325cc683. 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/QZTAZ2283850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf08264a42d6c87887c0dc0eb315cc385bd3d32e41266794e31d155208c0f2b0. 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/QZDA82244323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf057d1d55575eedbcf3cdef41d371fcaa3f1e9366f2b703f3f3c7ff2d1cd080. 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/QZDA82244327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2022cf91aa8b26aa56e060dbc29dc823e0aab53c2062cc5df8900f88e9658e. 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/QZDA82244329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf30e66ba2d2754d2cfa41aa62bfbed1de7c82546a50311627add2718ecb9712. 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/QZNWY2141043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9ac98adee6e854f18d818ad5226e340a62d169b61fcc5c76feb9fa06bec702. 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/QZDA82244331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03430770f4c7697b9c0c0eac4b779c07bf359d148ffcb7c0eff29a11ba9080e. 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/QZMHN2002132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd2fc999f7c421db889fe44b754443444769e940a29c3c48c2d7a03ff34877c. 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/QZMHL2098026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35f714e3532a736e9de0d35ff6b0df1cf5a5b116133951c856bce8290568e3e. 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/QZTAW2448343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf332ac2a1097889c9145bdc6c7b14eed3c0392e58ed3986c45dd007448c66e0c. 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/QZWFQ2323898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb743802e2cc7bad479b64b00dcad9648862610a93f68556196f04bb981872023. 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/QZWFK2352210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa1e32f1096155e3cae315d50b7c8ad63535cb5ca5d783611a8c850c1ed5be3. 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/QZWFG2302306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfbcd72c8632f13c6cd3dde38a4743cbb7220383d7310f94efc997fa8996d2a. 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/QZTAZ2347921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179b80de1b1992d81b73014ecfb950b80d04cd52f72bbe8e9634dd342869fc21. 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/QZTAU2314245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499e8e9e3c341f59e3722b64b741eba1a84afa6e10f52d2c363d794fb321c7d7. 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/QZNWX2344244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c274c652539ec5614015005055d3219f8050cd6b7cba77fe59a3a82c9bccfea. 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/QZHN92354002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754ef1d39df67055b108c133135fee553e717917eae2f855d2429e31b6b82b55. 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/QZHN92215789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f26e1db6406532a4f0fef513630630155339a16b06a19b27ea80cbd67f8fbea. 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/QZRP52102004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60baa84106f02ddcaf9f622acaa943cb868a422fb4d6688b71510cf56d34aae9. 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/QZNWU2108111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c03d83d62484e98087d11af20d27b9d7320b41ac53a04cda4ff162e04f5c3e. 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/QZES82349128.