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 0x37ed2b5063ef8698e46ac463cab50ba10dec724f63892aa060774fa730f6ec0a. 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/d347abe3-0ef4-4d4f-b3ca-f96039ef6115.json and https://artists.proofprofile.net/proofs/artist/d347abe3-0ef4-4d4f-b3ca-f96039ef6115.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 0x0869e991fae31ca68627a3b0d0dad75d07e9c5ca106246df4d02835aa1906cc0. 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/TCAEF1959669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d11c8359ddd7e68532ff67fefb06aafc143dcead027fefb311efbe817ec627. 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/TCAEE1933771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca1bde37924ea662a2f3743ebf9cc67d640b756fd5b617ee26873e4a2513dc9. 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/TCADZ1817583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde39a889256cbeef2d9bbb961dac9ddb138fd3709d2186a645a6ad7f944a2ae9. 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/TCADW1869519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea3583fe99155fbfd1dc3ac6f7f7c397b66b54461a7fdbc26e1da4b94289bae. 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/TCADN1887157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b812463a00461f3bb7c205e8975c2d1701cd90d36057b6a32c51ef45396a90. 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/TCADJ1733835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cf9eb3176b5b8d3e9cc31063f88f2bff591e11a52485e94a8e239a51fb3b03. 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/TCADH1730945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889cff4dfeefeea7dce72e84e583374aa60b262af8d6efcc526bd36e8784ac27. 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/TCADA1762675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ff31a8c02aa922d8b911b5a2ccf76ec34481017b6e1bf8762e94fcf539ab4d. 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/TCACX1708678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b448edfa7c06f3c1555527c0cda0518421032e2f85b0761b603dcfc3d94dc8c. 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/TCACR1675099.
Gændalf the Grå 2017 (feat. Oak & Benjamin Beats)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa463da534d9a8966766492814856b155a5270a7fe8cb2e62aa56f4ee8c49f599. 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/TCACM1686281.
Club Kids 2016 (feat. Oak & Benjamin Beats)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6c6a5d1f598e40eac55b21f8e46a16d243a24a2c298710bf7929d3e895f90e. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T22:45:06Z), 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/TCACK1528465.
Peaky Blinders 2016 (feat. Benjamin Beats)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff4af8823d5b03eec57786d7ad05e9a93624ed42dca14bb6cce7f6cd51c8b20. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCACI1589494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c63e9f9aa96f71b9affc4ead6d667d4c463868bd6f29d29a3fac3bd7da3b0b. 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/TCACI1540624.
Sjøbua 2015 (100 K Special Hjemmesnekk) [feat. Egeland]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba92abe911d3f341a15e089be0b29f4d2c4f17d9b6aeef240f3fe728cbf6953. 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/TCACF1554479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38ad2a0d017d6b49eec84091c78f35f2383c4c09c57f72c01b2ab92b1366327. 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/TCACF1518304.
Sjøbua 2015 (Sommerlåt) [feat. Chris Baco]