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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e861c6d6bf3ee204d5d5e42bf526bb33fb8a6b2932bb107be819a6437b3d6da. 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/389bcbd6-c871-41d3-af2f-9a8015f97a7f.json and https://artists.proofprofile.net/proofs/artist/389bcbd6-c871-41d3-af2f-9a8015f97a7f.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fc0f3ce397a5e7d0e1a511d781f2ebd12ea23f0a1fde8f92df65bfeff3d5b2. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/USRC10301145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24079ebcdba31570a30cc2b1b7f39d0f0d79b75bfc018ff5c47302e607f6269e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USRC10301144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa7e3cef198a17036bf87ba29ac9b4c799c86a1a46db3422bed1d40cdf6704d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USRC10301146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01a579e0a51568f0be187c6bb20ad5d77dfc625e1d9b6290d99fe9461bc6cf8. 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/USRC10301147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062f28a3bb2dccd53846e0201a95ed9da8f650c8b313e878d52f2198da37bac5. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USRC10301148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde803d4e281930916d88a290c8cd3a376c02502d9f4a02048eebae770774bde8. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USRC10301149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824e4c4b5480d74656769b0c6f95d4503ccc2884c208e371121edf1985335629. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USRC10301150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f6ba7718963450d97e52cb0389c7ab3213f258dd21fd49f63733a480f80109. Chain 2 (Bitcoin): anchored in block 956775 (2026-07-05T10:41:06Z), 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/USRC10301151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13464c4cd55f65f7e52c933ca43e0a764e8f347891eb0048063247bc0c2997f1. 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/USRC10502728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab493dbb6215ad504b31c0607b6fd6d7668bbe75ef793319ebd21feb7307a20d. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/USRC10502729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c1c39ecf6fa5e493a9df855cede9be28e57250891fae9655c15ee10af02717. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USRC10502734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14855b1eaf8e630c74923dd88b75039ad0fdc351dacc5ca07f35e0a90ab5b579. 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/USRC10502736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8021f3e0a381cc0c0a781037314ed13b6a7f4e4679ae0b8d683b4d8a31f34b5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US3UT0900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386149993b1c9215b198acb8de173f2e8b2d72802c0414608b00f6e13cf4f181. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US3UT0900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69094d008463ccf7c065d4f42509aa8263fa6b1e64f65f2983967c89a51b0194. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/US3UT0900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6988e5ce5efdc8ae8f5cb6cbe9f58d8027f58bf469b3548d02291f520d84a114. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/US3UT0990001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2ef7a3f8d163b4c47fcae2eec08f6e3f1cc8cb24394a36318dec60ae81e137. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/US3UT0900006.
Aquamarine-Music From The Motion Picture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b879820dc3c897adb0b66e322070d8084ada5186901091cf369c82306026b2. 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/USRC10502731.