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 0xe5e085e26de9400040056f99dc8e8cc16920660285fdca6f90e68c594b77774a. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1c83eb8-b87d-4a65-8541-1c934d13526e.json and https://artists.proofprofile.net/proofs/artist/b1c83eb8-b87d-4a65-8541-1c934d13526e.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 0x79aab427ce2351f5974afa4d45670c05526ad3e418e54872c2bcfc7e8c4438f0. 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/TCAEB1975934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde94f27a3692c80fe1f09371bbdb32b8a2512e9d14a153241cd19bf5c8b8d070. 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/TCAEB1975947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31d7902872c86d62bcd4b60b4f37f273e6e83cf91752f374c34604bf6a203ab. 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/TCAEB1975952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7626da0f33ef439816a8468ff5b1e8f9c916bcda0d5f395cb83cc373a77776. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/TCAEB1975938.
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 0x1ab2a96f734c3a8804da5e547e0f679f0cfa815f8825cfe6830eef6cebbc6090. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/TCAEB1975942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836c3334ed0190242dc63a16a2aef1802ba5903315c3b9b8876596f088b42369. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCAEB1975953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1422e9da885b391d8459ef635df568c3ae1cbafa4aa96bd75e8b7a28cd44a3. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/ESA011814436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfac200bc002a157c51f619016200fed5b05e7d9956b5a01f0ad7c30c1514668. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2R01600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe863aa783d7a80167516799b755e29425c429ec1189c4abb70341edf88fcaca1. 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/FR2R01500340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70e47dbdae36fe22f46059d2a6feb3943abb704e47d790b587bbcb0d0bc3863. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2R01600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec801fa923794232ca97f94e6ef4271cac509c56cc997def98cc52880c1cc351. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR2R01600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73eedc198ccd18f626a09acf580041df0f549a0e02adf62696d7e32f0a29958. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR2R01600080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe454cbb62c4816a05d80acc6f9ba8705567b9e5324d09ae16d7af6770bf803e9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR2R01500510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e6a53124677109a97e0cd30272ebb4505351a49911cbf4cfb1d2562430f61d. 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/FR2R01600110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6580ae93955158353f876b558b888db18bb01d27ba313c355e2c75e6bc1bf020. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR2R01500460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe979dde323ce89eb195665754a1fe637be23b014ab0aa78d98e62742e63845c. 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/FR2R02000540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd5b9c8898259bd46437e4c85a677974af27892cc7e10fcf1e71d807a4aefad. 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/FR2R02000520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5552b96e33dd45c4ff5598c66783c7e59f0b0e987e18da241f43ce3da8c32f1. 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/FR2R02000570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed1ea00f2b4bde090aae5893e12272c681e5e22faa950020b1cde0c94694985. 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/FR2R02000600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65296b6badd6720f845c889d7555010b1bfbd6139ebc617bab7c95ece52144d1. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/FR2R02000550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68728e3f404b2d60ab93182bc4cf1f474e3581efcd0070051fa0cdee69fae9b2. 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/FR2R01500450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19532948ce579509b8cdc6df6034fbafbc4e1a226403efb47b31516d38ef991a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2R01500480.
Dub Master Clash - 5 Years of Clash, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1e3e14b7451adc4dc488c464b1acdcfde95f0d6952202e59c788f41261a242. 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/FR9W12123417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a9340ea8d9119bb3dcfed117bb7abef3ccb91fd81ddf3593fe39211aa74c78. 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/FR9W12123418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd797cf9d41de6e17f24edc3ff088e6955358cfa18632f025243ec819aaacde. 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/FR9W12123419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d6e03f582f23016181ce6487ffef853a1f1092bd9e79485dc512f5fff94974. 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/FR9W12242458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381c5eaebaf89925492fe20bc7d6b6e387b5c35a106eb2f3d0cd84b937d31cea. 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/CH6542065814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046cdb0cb9700f2b1efa19aaf7d88794ad501b1ef0eab39119c63cdcdfed5b1b. 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/TCAER2081977.