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 0x763b1101e33a1959f2133edc180d005efafccb25fff41ad01d87d8bcb0f70f8c. 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/5759103b-2967-421d-8942-590d4a6c3291.json and https://artists.proofprofile.net/proofs/artist/5759103b-2967-421d-8942-590d4a6c3291.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 0x47af34c48256ba1624b720a5d10f59f418d7f4a2b1b690a3ddae19d40a38b7cf. 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/USDY42411479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5c68d954d0df9c5850df8ed8dda27618290b106f19cd5bd1289c9ef3a08075. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USDY42411481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f988e604a0e11a48a0bfefe068a7ae1a0af28cb847c003286979518433ec7d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USDY42411482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2e22b62b5b5146b4f6aebe6aa161467825e07dec19aa8d66b2830b8673e160. 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/USDY42411487.
Candyman Tribute (Crusin With the Candyman & Candyman's Jam)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7909269f2378d3a1bab82fda8cf747a1443857c70bac4360458826dd1420a81. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USDY42411491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c5576b918e17c05c0305596b0343876afde4b63a4bf22aebab1e727d0eb790. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USDY42411480.
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 0xb7d4e6a3b3cf89d43e8e663240602e7e2cfd28da5a6c4b51b4bbcfb16f3ae55f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USDY42411483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4499b5e7de643e38e6ee297f1fd586a38b4d21ed747bb7527fb9306bffed18e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USDY42411484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a0691ed1c04c304fa657492eeffe2be0b83544b3955dcfe4220b974e03e304. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USDY42411485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d71ef363dafbf7fd9e0dbee0fb78dd234ad3d0fd983a219a4fdc804f7298c9. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USDY42411486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c5411039f1640982faae8fcd57e56682fa8ca39424458151e70f7e11874409. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USDY42411488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9397518a82d434586833b8d7946e59860eb17af00d3207aee12e4bc62a7f0f. 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/USEL19700504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae137ed580a09033fc1cdf0431a5912eee24b1da07e34db7405d11de304eb9e4. 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/USEL19700286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5ff7f64ceef127ffb43d0514506756655da269e0f2bb6c32a114c11ecd1d86. 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/USEL19700505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1ccc2a7df006180aaaaae1f2652e9ce7b0e6ab6d0a858cbab6f2f32a26c055. 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/USEL19800151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d485921561fe55e4f2675fc2de0c567a6e808526e68019c9a194ce48d4ae48. 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/USEL19800152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d460507df5c386494fccf4eca8d8b103b7e32b5b8dae45d0b5548a7d342b4f. 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/USEL19700506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82166b916be61f387acc0ba4f102b166a43dc2f51076526d2d3538d62477acb3. 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/USEL19800153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3da2f73590f7dfc10a7068711d149e561d3a5fe7abacfa616ffb6531726c3f. 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/USEL19700508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628cf8fdd662d4febc05818a2530e664fefc7f81df97c73a6f37b5a68410054d. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USEL19800154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b59a64d07ce61261585248564224e1f3058815b073a5b9d68b8294b9414531. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USEL19800155.