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 0x17baf51950dd6c078aadf9153943fa238373700028ba50cb7e02de302662ea5f. 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/001eeba5-6508-40cf-9146-a7e9a8ea5198.json and https://artists.proofprofile.net/proofs/artist/001eeba5-6508-40cf-9146-a7e9a8ea5198.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 0x235fd1c766afc34c9e8cbc10ef929e2d45bc1b0bc9918313b63b6dae8ce4b228. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:44:00Z), 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/TCAJD2402635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b47528e7fa5daf481cd4ba12ad8ebb369d1f81af420525ca4fdef1065e92477. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TCAJC2402647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7abc2b46393a03921a744abd97ff714a6e975cff3bac9dd03c1333a81112b97. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TCAJC2402678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed016063fd72a28dd0e9948d2154514d1dc22560a9cd57e5d5778c0e3583d842. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:46:49Z), 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/TCAJD2420018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9ae10c605a5a7690a4207a622446cbf1de3f24975e2813064b8323dac66815. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAJC2420023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda89cbc6f70a5dc4d2cd55883a40585d97100c8baa22264ee346d1a4b0917dbf. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:46:24Z), 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/TCAJC2425420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e1525ead5d1444c8dc388fc5000ff412294a6c17a4d6563070287edbb1e4f3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAJE2574465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f9c776b84d832c095fadaa1fafe90d103b8b5224eb33ca827b1b07c12f4a40. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAJE2584328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf718d3b6ef32faf34899d7b29732076b226a42a46aad4d00054fda92d101ad21. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAJE2584332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d78763c89397879c8d069bc7b8da43c3b35726c7c52ea07cfcab4dbca01a4a. 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/TCAJE2584334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bff35b99966540203121595aa213ce3d68f752563b6de271549892480d02b67. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:31:44Z), 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/TCAJE2584348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d885810dd9f9521c96adc9a0c5260e0a2e18d58048b229ada4b5c0bd333d07. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAJE2584382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b7906a6075889992067062cad2b53b3cf5be140ed3efc90eef1edfbcaa56f5. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/TCAJF2525337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3618e5fabfdc0728dd76aeda1ac9090665796e514be680d835fd373e003c1b83. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:07:48Z), 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/TCAJJ2573514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb05b1f5046a985f4adbcb8026416c18140ff6a59af90c1ad81d50630600bdd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:23:35Z), 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/TCAJJ2573518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fe825179fa9368959c62a87aab8bc08960f67101d995574f0e550850671041. 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/TCAJJ2573521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275ee1fcdf6107791566c1e4d1adf5b6095320fddcb0ba067b4cb87f6e4034b3. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAJJ2573524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10632742c0bc6c5422b573bd7d970bc8886fe01f15cf6c6e437bafa4513a45cb. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:07:46Z), 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/TCAJJ2573530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53b13d299581f7d4eef3120df82d40dd99ac58bce5a85695e5751bcb68d64aa. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:13:11Z), 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/TCAJJ2573535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc5de616f468a9ba50b23fc4c54a84740d727163e0d8921aee8bc22fe1b4768. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAJJ2573545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf00f154420d0564fc2ff663b881d062efb955ed2e9a8109159a7bdb582cbf5. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/TCAJJ2573549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f4c07ef48ec315b231bdf6b7566dbc429d18caf266efbf9d9ca68b236b7a1b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAJJ2573550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5837f1f8ab6d728df2c3ccbb5b48b5e18af3244d962c0db34e8e79d90bcfcc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:29:40Z), 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/TCAJJ2573558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff47b90eac8d11354aeef9685ed2ef37a9c88e5c07ba08bb203affb9dac454ca. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/TCAJJ2579201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb277e74c5ca60bf6e3922b90eba04850335b6a1ada3382627855bcbfb897e32f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJJ2579208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e0abf7dece9aad5ca7acccd18ae03f4dc3afb3bcfe680f86720957f9a76bc6. 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/TCAJJ2579211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423f3e919c838297f04c64becdcd7174348c465195180c4fcaf1de05ab914056. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/TCAJJ2579215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6789445315d37251a56dc1126a9e59964c5d5608b71e2ee30d472a49c42726. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJJ2579218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e8ce994bb6cb6998186b2c2aae76e65998ac1672f6fb38fd66decef645cf32. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJJ2579223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84af1f4184e99530361212bcb8fa5513e2c647731617c14fd4e72641e3bd5cd. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:00:03Z), 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/TCAJJ2579228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5e157162d5d5ce65ab582530fef799c2c9a4db9dadc63924575df2ace0d19b. 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/TCAJJ2579234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbbb3611d0f46fbd7699cc8ed3423d29e04d11f6e778a6ebe481b0ee4ab2a67. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJJ2579239.