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 0x5e68cd143c3049ea36837dac5678e6a109986d98bd667cba8d99ee867279e8bf. 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/3f636823-ecac-4981-949b-59cfc724b842.json and https://artists.proofprofile.net/proofs/artist/3f636823-ecac-4981-949b-59cfc724b842.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 0x00686d3a9d8d8f2da2281b8ceb9f91311a24bc23f499447f450d63e2e759940f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USLZJ1301482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e7ecf1bc565d54b0f3f6870b50a6bbcf93db21a4bf245cb5351a21a84fd60b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USLZJ1418556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26c46cffdcb1ef205ae3c92d1c0912bbbf8ff48113a99d9317a1926747f623c. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USLZJ1529587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0807c5327ef3e1a95b7b99dce4a76f3d15cf4606f4d2f7563566aa166c4f74. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USLZJ1529588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a9858886fcd98643bb23cffbbd0df952480158b9103e490f51f83c5930fa19. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/USLZJ1583017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e939257b225f59ddb5d92548ef7e6531822233a44c6d1f3b52ed7886871bb85. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USLZJ1583021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858374910777af680ea3810b462ebf529ec6903a35189a91087e358f9d0f6e5b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZ5FN1876632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3644706f6db63abb677eeb2003575bd9522ad5985da7be765616f35b79b0742. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/CA5KR1922007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91783ba19ec89625034e15aac72cca717218beba30de55c7e3e010600e8ad5b. 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/CA5KR1922009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bc9f963fb0ae5908dba1ac97aaed98e38e797a6099a69b47a81788cf025c3e. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QM6P42089046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dfbea6e1d16f5808dd60f731896a527ca8b73aab49febf7e6157e519e4be35. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QM6P42090613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a904347567b151aebf92109dcde27765ef4ef12d1b80852ba9ea2c99b744de. 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/QM6P42089063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d99ea715655c468d967f5cd7f202b1cbe9c3330e142e11e937b609dd2aa00c3. 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/QM6P42089075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a06c910767ef21395ad9bb832e63a8f3903eace82bd2667057c38297c2473c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USLZJ2141592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a491879bde14fa6ce64d0f2b141bc5e68804681f4bb654abfd8fbb8777fbf9. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USLZJ2141593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc087da420849543ffd0ec741029025d1ec582f1499a36dcd87a711c8789600. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USLZJ2141599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23dceab9ce98b460beb7dffb56ba60e57520a5234bb52e9cc94ec8df5a8839f4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USLZJ2141601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37954b481e8e85833ffccc20b3f1a6ccab19f9f964ff36f401d3f7ddf4ab441. 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/CA6D22400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107c2f99c6c750bb2410a669f295430e46026a7fc1e9294bca2f338f3253b1ed. 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/CA6D22400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7a90a37d0d78b199f75d7f2885ba7a3bc7b65318f8812c0be6b44b3257de54. 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/CA5KR1805193.
Dream Whirled - Zebbler Encanti Experience Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb316ef16118c744e8c23cc0d176463d45c18ca6d9bd1b8425e5df60293f285cb. 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/USLZJ1519073.
Primal - Zebbler Encanti Experience Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138bc5fa345697ef38e4350b17b9b9109021d34efc50703f04bf777ad6064890. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBWUL1904664.
Circadoian Rhythms - Zebbler Encanti Experience Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9569e090f2e6a3a9d24adda5edb352267a2cab35a058b6bfdb05385f9d26ed08. 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/USLZJ1637236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd700777ce4267ec7fe9079a1a7d8d20fb4407bcb7e592c7aa30bc71dc1c244d2. 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/QM4DW1633799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5ff29bc9c4423616cf01bbe7c2329b36a1494a0d8c2a366ec582218ea84d1a. 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/GBKQU2319592.