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 0x6e17e7c1db59d6c98475c3e059a452d2f9f5b58bf4f869dcbbca11e2cfa0d030. 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/0f1fe912-61ae-43de-9889-c264cdeb561a.json and https://artists.proofprofile.net/proofs/artist/0f1fe912-61ae-43de-9889-c264cdeb561a.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 0x2655f9f5c66b1f8dc87dde503c55cf90b3d71276829c85971cb8d3d19e19ff7d. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:35:23Z), 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/QZK6M2469520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db3116acd6c46ed94187ae052af822aee1559d2ecdecdb89917802494bfd3e5. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/CA5KR2463623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a40f32df73d893cb26fcf6c6698e15ce3e7da498193acb369988517c757037. 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/CA5KR2463624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010e0312adbdda09f5597d497afa41cfa3a3510ceaaba40fd2414b2702476c40. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/CA5KR2463625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04abc92b6c806e01f15640b2b4fac1e1822f95a3c5e4c96e6dfd705e4f0adbb. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CA5KR2463626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447c4425b7af1f17ad5db862064febd7a7f591572f1b8148dd6209fd31419870. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CA5KR2472017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ba3c6e23437bae138d943cc7050eff5fef55f175e8d209c5dbf9a22c9e7c59. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/CA5KR2472018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb3fd79ec26a8e1d0f82eb4977b9d84f24999194a1b86bea8699c75450f2398. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/CA5KR2543899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bba39bca02d68291bdf58934495f7502ed1504cbd3f30794b054a95a8b9fa0e. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/CA5KR2543902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d1b73b4ed8e04f7b5b4e935ff68c0e600ef056886d85b6f2ba4d294c54b044. 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/CA5KR2543903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03628400c574ff26188f220a38f7bcd4514fac05fcff0c2b37ac33a1b06d2b74. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CA5KR2543904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe791b8979af0b8c2ea34a78d9284f4e38cdd1a42c628ac8ab857f882a1938947. 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/CA6D22300422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98483b7fdebaa75d5cdf09707114cdd02b688fd826f2f2925667c3f82a12c653. 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/CA5KR2448846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98483b7fdebaa75d5cdf09707114cdd02b688fd826f2f2925667c3f82a12c653. 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/CA5KR2448846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be060ce79578f1c173eb838686eb96f7acc7ec07fa97cb077d91b24b5744f40. 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/CA5KR2426025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a15794e1988f420c4bbc1fb7639bb435e388f7d37f0c37acea546d55aa8a69. 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/CA5KR0005575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2c3cc45644f9b789e9c241df45fb733da53bd167dcd513608010508a07a20a. 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/CA5KR2437485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3827c8870035472d7e76ec3c89debedf0a5e60b12fda7de64f5b42bbd73411. 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/QM42K2174759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8107a0eaead897dfe1c9f450e3d91e1fc5aa245076baab12bb8a1272af3f6b. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/AUK3B2400032.
Tekno Music - BLVNKSPVCE & SQISHI & HAMRO Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9c4013296aeb656161359ceea6deea4acf90ef381f67a24bce8aae308f84d2. 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/CA5KR2452276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ab53ea40b52b45cb0f79489a039aaa667359b6061a176c11e64113cc006069. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/CA5KR2300072.
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