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 0xb62c68f69701212114d26683869f36cad77579a9d1f6c498380dcda3112d2da2. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00298aa1-f45b-4a2c-9af2-7b85a1f74314.json and https://artists.proofprofile.net/proofs/artist/00298aa1-f45b-4a2c-9af2-7b85a1f74314.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 0xf45dd642014b9124be4705c6b41d2341d5ca7aca7e83a0c67aecc8c87af9be2a. 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/USLZJ2312476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3006fcc4d99defe0f97f9e0cac1a63e6ed5845a405f306810c4fb77ded2262. 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/USLZJ2312505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e68d8d1755cff901ed2f1d135f12799b4c7cfff181fe6bd3982aa8081932204. 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/BXZPH2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fe88fac7c31a25b797e6a2b2372fa14c1236228cb1f91ae8bd7a9179ef23ad. 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/BXZPH2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1c242c2bdc815e1d3d24d7fc4277f44731bbe8d5ee6f3096dc688e051a07e3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BKCBT2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa77ea6bf2a7cab95cde458e1097df5a3385efade3360f0d7a87d8a427ab959. 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/BXW6U2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ac5c6b2fbc950016a3a5cf3413b55b6350045f92cfd2cfc090cea3d3ed2cb0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXW6U2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9ee7eda564f26f49d7b6a8e9b58ca67cf791bb573fbb037d21aad6d8c9f5fa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXZPH2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa123b37eaaa25e703bcbda39918962c9cee4d740a13c561401556b4a874c9179. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXZPH2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bda42f466f9a237ad4b626cd02b2da3840dc2116c03ffa446a37c5750ba978. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXZPH2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fe88fac7c31a25b797e6a2b2372fa14c1236228cb1f91ae8bd7a9179ef23ad. 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/BXZPH2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61241fc094845f8fbbdabfd75135cbbe35c65c83819b38a937b085d76c914741. 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/BX6IQ2300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e68d8d1755cff901ed2f1d135f12799b4c7cfff181fe6bd3982aa8081932204. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BXZPH2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e49b2250218cb404c7270a6e61e1c0f233635e7496e4e8be8807ff985aeebbe. 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/BX6IQ2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1312e199abf1c84cc7450ad76190be93817ce96c2ea175e6c3f1531e3f7671a7. 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/BXZPH2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc2bcee722f3543a40f18217513e59cf2d7e052b60ed57636da24531899fb4a. 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/BXZPH2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e72f19afbe1b499c2b5edc278df338d40f7a27be167220b6922b0a0559286f. 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/BXZPH2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bda42f466f9a237ad4b626cd02b2da3840dc2116c03ffa446a37c5750ba978. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/BXZPH2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4129375c6682f3fa688242074184c79964851d9a0e918df29940bb579790af. 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/SGW502586077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2080cb9010b695b675c7c8e42d3da80b7cef69d06ea775a1c1522bbd86edd43. 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/BKCBT2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d30dafb33a60bb80a051a33d9ef77e0832bc93ca20bd7a564ea6e9eb6ca2e7. 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/BKCBT2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00697f2edcb5bcc02f325c28789e57a6428113084d901974a71d6fc70ace3730. 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/BKP102400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e11301f5b1df791fc3caed2fe0574a86c99d39b8596994b03016a91bd62ff68. 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/BKP102400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdc5571b68d109199eb50442b3eaf067302d8d395844feb2abf68f194836cd1. 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/BKP102400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd274a3b6005eef6f9373ae3e6d2d31c5d0dc5d6d99735e9e38d1f4f162968f70. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BK1SP2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9165446835dbab8d6d3a313c64893bcee668f463282b35ad3182c6335951f96b. 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/BK1SP2400022.