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 0xef6798960a59325f4f8a59c0c5435ecb4524a5c150e52d06e84ffdf9a927122c. 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/37512c28-661f-47f8-9d41-c25fb30021e4.json and https://artists.proofprofile.net/proofs/artist/37512c28-661f-47f8-9d41-c25fb30021e4.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 0x9e189bdf4d29296c1bc947d59ea7dc4e22d891aa5894572ab21e8dddab7eefff. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:59:11Z), 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/ARLSL1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe601e39d27b321f829f80bf75ce9bcf99b0733e3ff0138c59617cfd698b9c00. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/ARLSL1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ced5ccc4c77ba05dba0dde3eb87c18282e350a01b1422e9e9dac5c34fb673eb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARLSL1900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d2192dd0add255874ec6b541d8c9b4d2a62c729d77b31db6e2d2fc6c2e8920. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:14:27Z), 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/ARLSL9500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52e08e3331446757c4067c42ab4c6df3f956e3b473cbfdf75f402ce5b752bb7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ARLSL9500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa4850516efda8545e2108074ec66672fef1a470aec30ecdaa5a7b3b5f102bf. 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/ARLSL9500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6544264303143cab342e6e29a5977648cb8f54ec78e3dfef24f692e267d5ea3. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:42:32Z), 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/ARLSL9500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fff9345063a5f84e20e2aa8ab2dedeee8a649dee29a0966275d20fa7d4e70d. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:29:29Z), 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/ARLSL9700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615966524f08daa07e19026751d6bf7de5aee5d87fe9a8adfc4f4c18d34ac1ec. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:33:08Z), 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/ARLSL9700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb90cd4d2c7f33ba0a881c73d74904677d478f2579d19717f38a2cfdcfe3fb01. 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/ARF109800472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5271834485c3ef723348bfb909bb274cf8cc33637a71e32d9a527b195f6b7948. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ARLSL0100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51b7f4fa5db298ae8e0bb71946668f13ae2560ea68d7281b35db99c3090a207. 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/ARLSL0100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11a63e4506f36e562d1c478f39925a2345808f5682646363754047fc7070f4b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARLSL0100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd338faacc9c0d915d8e262716820382790124e6fedc0d1ac9f265c87f56652. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ARLSL0100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284a4c8979390b2cd1e6befd731e932058fe74e1ff9a0e0a572c7e89dffba416. 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/ARLSL0400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732c0a283807e692eb79ca15355ae9079628c02025fe693e55489fd45b5bc7d7. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/ARLSL0700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cc824b8d2782f0e0b1079be413546106abd1b0aa81e705064b07ef7190e497. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARLSL0700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174b8bc137fbc306bdb220d3aabf40b5458a4f673e38a766530aab84451a3794. 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/ARLSL0700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf793fa722de1c671693815750e29f8953a071cbb24d13c3f8ec0f9af0dcfed7c. 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/ARLSL0700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf5c99ce18468b5d7329f8526f4a8c485d02b05e72cb874f2941fd20a779ad9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ARLSL0700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10718d0937d5305e5a7b634d4e26858ba99bd83ee2b6b5e6b2587352b6209792. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ARLSL1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d15b56ee4b7376e1053d5c8070a256877133c25d91b3a666b47052c8294a6cb. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:06:03Z), 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/ARSLS1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd722fbf867e45e9093319dfe7f5f66ba2709702563dbf472afcd330dabcd18f8. 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/ARLSL1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6752625e3f42d5dde28dbe165408da50472a843e9570b241c568ec73d0f6e02e. 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/ARLSL1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc466541e047ed705792b865cf305668bfc6f5e6a86e52aca23a1be4804bc19ec. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/ARLSL1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4634507f9f2644079f4a2d914a106002aebfa2d4cceca4d438cc4caef7c68aa. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ARLSL1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8b218906c58191f09b61beb99930d1cca224ed72740fda3b768296afbebe97. 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/ARLSL1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8493a4404b45c238f985a132678915020864ec0b1dac561c9f4971e6707400. 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/MX5332300143.