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 0x51d9e1fddb80c9a925673e4460bfff45b3e5ca812a33a8e6ed4ec9fb4b41bb92. 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/3e53f768-fe88-458b-a85f-81d7db4eb8b1.json and https://artists.proofprofile.net/proofs/artist/3e53f768-fe88-458b-a85f-81d7db4eb8b1.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 0x02b255e18307b12fddb0163bc73ee5b59ffa39b8d4d282db1d000077caa5cde2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US4XL0800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bea27bf000461436050f624b62975a300a6e2b2fec62d4c1e226dc09687264. 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/US4XL0800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1d8e09cd4fcdaedfab76d301963cc22eb69a4269101be75e502c242d027325. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US4XL0800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b10736773f71b9e89e993c9a243e75466f6a9bcf17dd87ee290e711e079e904. 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/US4XL0800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9860dc06eaa7058ad6f6003c0add16216677a4e9f8d962b64f9821231efef2a5. 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/US4XL0800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd344fb8b83c9957d88f1929a70f8c842fcca3738c723595ad4fc75c44133ad. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/US4XL0800059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f679544d009605c7e65eddb7b08b74bc59141272be2f561d7864c4a99d8791. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/US4XL0800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93e9b4a40d3d681b8b0f3836f3e4415849c45d423b85c007ff2402ddf4a1d29. 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/US4XL0800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4f37d2a278569495e042117c6cb941848efb1ed882675f779600714976b6b1. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/US4XL0800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0307bb8d171e78a224be7d12366c91a7f367ae13c0849b374285dec3780113. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:32Z), 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/US4XL0800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5101843c93734453e84a00271fd44223a7d11cada3b4e0b803bd4103ec4d60eb. 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/US4XL0800077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7c296e00160c2f2dfe395caab9461813bf81e72dd70452e5fad3fe2fbe4873. 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/US4XL0800097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ffe821adf1125da2159acfee23ea90716402a499f3cd0ef3715e407f4ad9af. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/US4XL0800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082df17d6170004b2acf88b7aed798676c4af07a1e30b75664016e70a5322857. 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/US4XL0800161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e78d0dd5c501f493ffc616f3a4411650f4341da33aab00ee9c8b7f5cce04154. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US4XL0800165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98787164337949b604ef535bab38d7dd2ea6d37fc87dcc76e97f0f361f7e3229. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T11:31:28Z), 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/US4XL0800169.
Houses in White (America 50th Anniversary Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ac7844506f2649d5091b8529770516b84d5270125bc10e4d6b110d71c87a48. 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/US4XL0800121.