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 0xe12a07fe841a176fbe2ed151e543c603b0ebfbae3695b671d52721b8dac7b311. 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/30c97028-8af1-4dcb-b9c3-6a79c7ce2c70.json and https://artists.proofprofile.net/proofs/artist/30c97028-8af1-4dcb-b9c3-6a79c7ce2c70.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 0xccd07fa12aea2326becb05d73fa9a71e85af9aab1419f18fff9b040a10fb1a91. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/UK9AV2302880.
Along The Round Stones Of The Garden Path
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724c209e3ee4d77947ae59abed3095fab1c43c483c081fb6e43f02b3a275c718. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UK9AV2302881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd2f0057c9460d4b39382ef44e6cbd6bed40ed8cbe17286f800c94bf8c8e158. 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/UK9AV2302882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179a0f035bc92bd666a3dcfc0db170aa4fcdf33e08ee57f9300e5fde1f1e7183. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/UK9AV2302883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda18a131d649001a14d50a286d013e8a8d079f4d9f1ac303c0dfa25e9759557e. 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/UK9AV2302884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad66bedff33716f1ffc07f84b5caa6cf30d72b932419f01b9fbe1e0cb13541a. 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/UK9AV2302885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49eb659969e2e49f2dca2a1740709eaa5ce7dc84bb97d608a1c6257dcc9613e. 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/UK9AV2302886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642eaa44976a40a38e1de517696d1db32d1e1f650fbfe30308a10ae3050659e2. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/UK9AV2302887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0614c1a6862f33d9185db365edfc3789f843f165f79bcd5536c82f96da82ca2c. 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/UK9AV2302888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894d175d4648785bca8ff99c6bff60d8347c45e220dc484ca739935acdf423a4. 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/UK9AV2302889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b568c218c0eff63f3599f833800eb616e8f0afda8ae1a1012763c5eeee0922. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USA2Z1510030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936e78c5a07432ac0b4e435f2ecb862542ca58d5c2eee0090c333aa58bff5209. 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/USA2Z1510031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffa77da3aa4814e30fba80d0023068c475c643c6f8ec59f15efab745cb4c524. 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/USA2Z1510032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe09667a6d0f7ec09ffe9c5050145149febfe277268a044d09104488d1398d42. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USA2Z1510033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18abddd7dc45b3ec2ea3a4ff4e0654880872095f4ddaaecddb9865f7630eb29d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2Z1510034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f7e118a676b1baea0fd9e023303d8fac7ae0f578f65bd5d8d812e477339b44. 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/USA2Z1510035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4844c212b7c8bd2ee68c5b2d2fab83341f31cdc5c3b816895be23bfa395fb50a. 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/USA2Z1510036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1900519e0bce2d1f2e4126ad8b7a6b8a3c2bdb1f995179f56153ccdf17130d34. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USA2Z1510037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b2398e394f1dacfb06c640b8d955c74f91628298a1fd981c6e1b17ab3f483f. 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/US58L1400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5056758ff1da1870e095682c46cac26d93522ec2a83a5e22059ad264613a17e3. 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/US58L1400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fbcac79853ae842164b26958062c3ce9e58b5358cce85b8c78c918035acab9. 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/US58L1400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025f29f1a34dc44f452f726a014c7a3cdbfd845424f7b9de950aee4de9c0694f. 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/US58L1400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432c56f2a93477cd2a1d60521ee1c745cbbd0d82cfca6d19578b2ab580cee494. 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/US58L1400507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5e0d4e800940c85cabc80332f44163281a48f0b1de32bba179bcc3cfee404f. 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/US58L1400509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ea89e7e931f825f443a285826a74a2654b9ac30f2bd4cb15068c96838468dd. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/US58L1400511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49eb659969e2e49f2dca2a1740709eaa5ce7dc84bb97d608a1c6257dcc9613e. 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/UK9AV2302886.
I Came To Tell You In Plain English (I'm Leaving You)