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 0x8b60c0cd3f26137ee552eaab262fb28d511ea3d690c1b5af3da260b779bf26ca. 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/b08a22eb-1ba9-4fdb-9055-d3aea21b2c93.json and https://artists.proofprofile.net/proofs/artist/b08a22eb-1ba9-4fdb-9055-d3aea21b2c93.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 0x88b6788294f266170d6b2aa6084aef72d45d124bfd58c32534a8060f1d8a9750. 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/GBCFB2100386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41435e9aa095a2cbe425d8d65122273fc9d72c6c6ba799f494bd326325afec0. 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/GBCFB2100388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb2cee9b2e260aa0798276305d1601f89ca912afb4335c3fe1de9c0f8562dbc. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:31:58Z), 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/GBCFB2100390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d1609896363c50e21b1ee6e92ba3e967958df143b57231095c516dd2fbec4f. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/SE5XG2343802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d7036e9c02a67a5a5b4bf2b2962c2772528695e610ba13e216fa9b7c215df2. 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/GBEWA2203020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3188c9886d7d16d7f814603571ed3f214e0699c3af97259a853df0dcd4db02df. 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/SE5AJ2201688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35426baafa0eedb6a20c4706b591e57b200030a584fa9ee33cd894d4088f9bb6. 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/SE5AJ2201955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987f2ab3d65d5202309733d9f9f065a0e26a50dbc76e1e18f02e181f58ee6c94. 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/SE5AJ2101551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28432b1d97c8b726b0b85941dbc409f643c9c3592d18aa88dd44fedba81f0ebf. 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/SE5AJ2201956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0573204acd2d36e56f746c6d638a6622eee783dc270d27a2748bc0fd2903813. 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/SE5AJ2201687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf766bcb460603f34a574ed646c80c1cb3192ac0e2c5dd21fb33cbfa4cba99411. 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/SE5AJ2201689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c32042ae690fce530f599876acd4e1787956e033693c059a67d7a1bfb0229b. 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/SE5AJ2201958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daffc4bc106931c3c8173b1b885af342cc063917e71fef9121be77af8f91e0f. 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/SE5AJ2202189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134f162fda454a6e03f4ce80322a307f4363713c00912f3bec7f82f9169fcd82. 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/SE5AJ2201959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3951c98c96b9fa53147ad6817a09a15636b332c89f9c3dfab922e1fd4c152a56. 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/QMFME2321872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc670297634c5b1cbe318ade4d1744e97263aec0f11f64f644c96e08ab556cb75. 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/SE5AJ2202125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35426baafa0eedb6a20c4706b591e57b200030a584fa9ee33cd894d4088f9bb6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:57:18Z), 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/SE5AJ2201955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28432b1d97c8b726b0b85941dbc409f643c9c3592d18aa88dd44fedba81f0ebf. 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/SE5AJ2201956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c32042ae690fce530f599876acd4e1787956e033693c059a67d7a1bfb0229b. 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/SE5AJ2201958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134f162fda454a6e03f4ce80322a307f4363713c00912f3bec7f82f9169fcd82. 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/SE5AJ2201959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c32042ae690fce530f599876acd4e1787956e033693c059a67d7a1bfb0229b. 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/SE5AJ2201958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0573204acd2d36e56f746c6d638a6622eee783dc270d27a2748bc0fd2903813. 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/SE5AJ2201687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3188c9886d7d16d7f814603571ed3f214e0699c3af97259a853df0dcd4db02df. 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/SE5AJ2201688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987f2ab3d65d5202309733d9f9f065a0e26a50dbc76e1e18f02e181f58ee6c94. 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/SE5AJ2101551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0573204acd2d36e56f746c6d638a6622eee783dc270d27a2748bc0fd2903813. 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/SE5AJ2201687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf766bcb460603f34a574ed646c80c1cb3192ac0e2c5dd21fb33cbfa4cba99411. 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/SE5AJ2201689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0573204acd2d36e56f746c6d638a6622eee783dc270d27a2748bc0fd2903813. 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/SE5AJ2201687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987f2ab3d65d5202309733d9f9f065a0e26a50dbc76e1e18f02e181f58ee6c94. 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/SE5AJ2101551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595e41cf89bbb8ec2bab4499e13a91a99d86ca071eed3ba02935d973ff224fca. 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/SE5AJ2101603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987f2ab3d65d5202309733d9f9f065a0e26a50dbc76e1e18f02e181f58ee6c94. 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/SE5AJ2101551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b6788294f266170d6b2aa6084aef72d45d124bfd58c32534a8060f1d8a9750. 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/GBCFB2100386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdfb7c0cd5fc59f50891225c886538d438bc6b1aad489d94be1f83417302898. 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/GBCFB2200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1a3c739bfe40f8fda6813b656c6952bff211fccc8f6cc6e8955f76888d10d2. 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/GBCFB2200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b6788294f266170d6b2aa6084aef72d45d124bfd58c32534a8060f1d8a9750. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBCFB2100386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a47383f75db47f0c571a6bfd2557147a19622208ebcdba2ef932fa58791b01. 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/GBEWA1904240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b6788294f266170d6b2aa6084aef72d45d124bfd58c32534a8060f1d8a9750. 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/GBCFB2100386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d7036e9c02a67a5a5b4bf2b2962c2772528695e610ba13e216fa9b7c215df2. 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/GBEWA2203020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37764adf2cd551b06e9c6187943ce8ebbef4d39854c598858938abfb88231c23. 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/SE5XG2246201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88f927b801950532eed80a2f3edd6b9cc473c22e3bd1cc84a4aaea3b3c8cbf4. 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/GBEWA1903180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37764adf2cd551b06e9c6187943ce8ebbef4d39854c598858938abfb88231c23. 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/SE5XG2246201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88f927b801950532eed80a2f3edd6b9cc473c22e3bd1cc84a4aaea3b3c8cbf4. 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/GBEWA1903180.