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 0x37e061588fe76d7e99cc180700055b6113dad2993b09a749316a7c2ffe6b4e3b. Chain 2 (Bitcoin): anchored in block 954002 (2026-06-16T20:47:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/323e803c-5484-41ea-9c45-758ec703612f.json and https://artists.proofprofile.net/proofs/artist/323e803c-5484-41ea-9c45-758ec703612f.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 0x0b83250a6cbd6080c9b2a9571acf8d4cbd98987867bf75e0dce3079ea3fe8314. 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/USCGJ1435282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ffbb055a755c746e04ffd05d4c9dcf30bd5970542a18e5940013fc5c74be91. 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/USCGJ1435292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667ec586deb70c83a30c5ce91c4fbdb52732e62e3868f2ef375e6590d538df05. 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/USCGJ1435296.
Mouse In The House - Feat. Darrell Labrado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0805ea9ecef236505d8f9119611d7dfc4604e20c2c122777b6ccadfd22f7c53c. 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/US4T70508801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03f6a5600c2df193a4b81fb2e37c2f90337d71231cfaa5d16b18f5b6f431233. 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/US4T70508802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af01e06d06f4a2f951c539f8dbe64786395286c9ec48b1f93e3e52fbb83d3d7. 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/US4T70508803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4065a365e99c6e92f6a0edd38f2c9c5f9ad779348ebaa7b83fd0650a09378d. 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/US4T70508804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b6de0c9e43c5b5b0eeded1527a8aa197b55e0667731a880799ab80934576ad. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US4T70508805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0475badb9e47ac14ab4e838ac896eb21f38410d703df08b2a36a4891307659. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US4T70508806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf07fcbb6e5d5e8b117a3507f0e40a3db2e4aea0c22a7ec03d96d11c45eaf50. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/US4T70508807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ca1145ad6a7f072f3d849cf219553ecaa9b382b8910fe0d1777068f707ab28. 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/US4T70508808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653e121336159feeb652a483dd21d13da2605cda63036f47d05a6f84c5ce9b45. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/US4T70508809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e735f78d1171053be0d8b96f0df49d4a28a2913a85681eab245154e4d6bd915. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/US4T70508810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e919a9451b4fabb8e787b64109a62c821b734a5631272744b6c874612173ae. 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/US4T70508811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c1d30b24d2b767c3a044b30f21fa4d9ee383d4522f01e7e49c721becc9b1fc. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/US4T70508812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca31158f2559227837cff7cfab5fa2fd1bbc8653581c598fc0d7bc5a0aea3c6a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/US4T70508813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78cd3b8b589646c1394483f3ef125c43ada50a533b088f723c1ba57e5c31af8. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/US4T70508814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750fed5619f20967eb99a60f40493a24a92ab674ea3e1b92f63a7122f60caff1. 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/US4T70508815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723aad23b1dc3f3fa4c450a0fa2d82e6f8471d4beb5684edc9c827df7dbd9e24. 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/US4T70508816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645c0e673ffa76948b88b35c97fc9c1a550e40c1f16102acea795aff114b4349. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/USCGH1248204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e0513c81ccd772c0792ed1ecf25bced3239102b4597ef4896c3af7958f05e5. 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/USCGJ0817586.
Drop Baby Drop/Who Loves You Pretty Baby
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf64c9699349a193b692dc6db0b555321df9664acbf6636a617d0c485c94ffac. 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/USCGJ0817587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b42d279874728afe0819ff9af75cb26f3bf725630690be10ac672311b95cc4. 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/USPMR0206055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b13e75613849c01effc14e6f2366d50fdcfa3ff8e611765972523854de1609. 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/USCGJ0817591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e44795acd2139cb464b8f9d8ce6e95e2c6ac3944d58d70a0e4b8151d0d306f. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USPMR0108037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8bd2042579e597376f96820a9ec83e887b03d62098aee997fc3ee2ae3a679c. 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/USPMR0303081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b7a1122e5df04355b19d3e0efc062b4feb09668853264d193c7cbd25f03017. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USCGJ0817596.