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 0xb42264f8f6f5451e1ba46254079ef133b713a77a0622a4f9508aacafc2caee5b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d3f6ad2-c9b8-4462-81f4-f6b81a475de8.json and https://artists.proofprofile.net/proofs/artist/1d3f6ad2-c9b8-4462-81f4-f6b81a475de8.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 0xd1ecef3a60a5d194da4db2be865b8592ca4d8fbd3919644fa6d2e7b9e5999cfb. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:00:55Z), 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/IDA832404058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71e2429aa3c3abda4892238eeb438c81d40e68be37660cc0fd68320c14dae67. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DGA0L2449807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e5809102ba96f33d52bccbf5fc891fb480794db089b68e674d03614512edfa. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:52:57Z), 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/DGA0R2415155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca6f0f9edf90e6b6e47678f066d4be161b30b0a79160207e6284df1e407d53d. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:53:31Z), 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/DGA0Q2495653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849481e144e0d4cfe1e5357cfd1217700995979742cb45c40ad8b93221549d84. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/AEA3A2248139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849f7dad64a69cdb34b2daa24ea87076f32160ac068a024e94af0752dffbc25a. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/AEA3A2269411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3f57ebdab96d95c6cd6ead835aa3f9d4f5a3494f0eea4027a42d50181ff7bd. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/UKRKJ2500298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bd6359c97bad328ef349c4e9b6eb65fc55662fb1672f234128a72c6d10ecd4. 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/UKRKJ2500343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec4bdeb9d20af002566edf050d9eda1a2cdedfb4808b4a467fd875a75defca5. 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/IDA512500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe135cff8b43b27d7bbe5aa19ba6bea28b46fca966c18799634cc21350a9a05a. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/FR10S2572266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28c9160015706c7777ed45286c22d0c47cecfd44b2c83b992c3cfbcb54bf46e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX202568381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb029771f4b0f29442ffe8cf6aa55b10d24965b8912faae646143d7c6a77aed0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:41:06Z), 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/FRX282593817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965b637ea1b3f91e381b8d9f9365fc11c29d39585e222ea87b530d27f216b044. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX452580619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9083b2272a53c864c1f147778a5b1a415af9767f048d8d033e94528bab0b600. 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/FRX762526921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a581eaa2b96ed7af715ca8e4ca4c2ac7fb8790984eb9fe32bbaf8f60b574bf. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/IDA512500417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f1c01cb62e435498ccb163b0d93dd02d88b7ac7d87963dcf6b4b1b5b3a6f3b. 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/IDC012502108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84dbd55587b60c36a0a6e911b04dd3940cfbb183e67c174f2701c4a3c48a100d. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/IDC012502107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6373bc93336fc519a5f937b84d0f53c338b7e201ee17d7591497e8a3fd5b2d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/IDA512500422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af104941209be332751cb3ba1b3f6761315d932fc9c5f6a37fbfaff61dc3ba1. 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/IDA512500432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd064b60a476e58ab05208fcea4befb33d06eb3eed6024fc515ae2ecd63b776. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:58:04Z), 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/IDA512500433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8045010c608fd86a85a5a839e18b36cbdde4ff36cd90346293bd6aebde29545e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DGA062510718.