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 0xd7ff1a7db3191d8cf1441f98e27a573f2f665a89ae15a2d54676e596369b4eb3. 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/4f92ae55-df5a-4b4a-b156-b548f2168b4d.json and https://artists.proofprofile.net/proofs/artist/4f92ae55-df5a-4b4a-b156-b548f2168b4d.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 0xabfc35f26ad80a3e2e7f95fe76cc3a72cfd7bc2afa62dd61d81f0e7b0b990479. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMEU32010190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35b736f8aed16c02822c7a38c6fc26ff76ff072f549d907c22176f36be4e75d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHNC1967195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d55cb9021552c3cdc423d0a49f2ddf1ca84d564a5a7c99cb8da5998ed231b6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHNC1967199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87be0697c8af9f71e667cd5f038d67cc3f9ec4300cfc7d656a63aa45e7664595. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USSM12101656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea463b82fde501b4284f45262c4babfdb6a2e4072790bda4a2834d7cd2dfcbf7. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USSM12101690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b11a0e2e53b6c6d7f89ffd948877fd2187e08323b2eb58cafd7735b2b049c9. 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/USSM12101691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a95c8b9c1cd86f2f24b5062e42fbf533baee0ca569ebc8e37d00166d47d41f7. 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/USSM12101692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87be0697c8af9f71e667cd5f038d67cc3f9ec4300cfc7d656a63aa45e7664595. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USSM12101656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665e021d82596974f3b2209aa67239b73afe5d7deecccad273bdf516f3db7937. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USSM12101693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0061d4b574b432d16ff9c838b6784773b4f67c75161480ae2d91dc58d15043. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USSM12101694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97592c86500ee93d247b26e48ae1720fd6a9ef9d4451257242589e633ce979a8. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USSM12101695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a6b145d02fbb0bb6970e6538543868d5c81080b5ab97d24fab57ea70b60f30. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USSM12101696.
Addicted to Finessing (feat. Retro Messiah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1a13ee3842843e4c70a0b10ddf92380f79bc4d18d21283251fe53ea04c0716. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USLD91747348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f640d332e0e6e24ad2c1ef87885c4deb67be95299d69954a19a4e3deb149336. 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/USLD91747767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7ece77e7b4890123108e3f77503e575ab9caef63c450e64ae9aab733f63b43. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USLD91747768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ba7f7977234230d11b370632e66153b60d502a75bba280e9fa11397641da37. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USLD91747769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d4b2f3340a5482c7956d69c980c7e051e2eb565a06c4a982e21285aae12bc7. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USLD91747722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b11c14bf20c3001a70601023dbf16f943287f4e81a91cdfe9d0c5a33754de78. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USLD91747771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e21e37331a2dae91253169a665127d9410a4b1d8383d966acc0ea76d5296be. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USLD91747772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442c59a77d0a2c50cb4304b620abdf61db227030016d05e59c499996c65625cd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USLD91747773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa64b3b1b35f5e5e91aa650a05594059a093775a5e6c9e4cbac09b44a405dec. 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/USLD91747774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2af5458cf16644c35c7bd892082188c2e755d2df26f6a892a438d4cc43bf21. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USLD91747775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1667651b1447469cf9002f2706d5b81ecafb080bfa4c2d1ae098482693eed7c6. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZMEV2598572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae9da2a7d9f5e1c839fba28744387dc077c46746a618df6641ddd8478251df8. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/TCAEW2035561.