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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 0x4c56b97c1ee6bc8343a12d5ae79302661063371cde25f7106e59fe5085cf32c9. 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/9b515994-2449-4c2d-94ba-c66a47f0eafa.json and https://artists.proofprofile.net/proofs/artist/9b515994-2449-4c2d-94ba-c66a47f0eafa.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 0x57a27b30ec6ef38a6f7bb11088d0112e229f36ad0b4754489c11933fe0761c29. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:30:12Z), 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/DEM301900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638b6cdca2cf08a6ebb47d6935e60e91923451b7c9838d874d2f8a3d54b660ee. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEM301900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7157184aa3f923779793fc25aadf807fe19a95a0a66f7a6adb5d4929167c65. 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/DEM301900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a268fa4d0bf01607b0eb932e8a97e453e888b8005983db7cee084674afcbab3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEM301969002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d70bd15f74267e89017442c174a3a41ad28ea8c4089fa87e302316bf2b297f. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:52:55Z), 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/DEM301969006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed5800a90eee17843fed2182be9a835b9b4a48061ddda2917d5345c4f52f20b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:35:06Z), 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/DEM301969010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f876160a5cb8dfcdeb9ae5f4a0cc6bc9b0bbd7fbd43e70137b4ebe78721d644. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZNWR2094006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32b4f6b260840668401c3ee50f1572563a36c9fc0c57797bf99167aeb91f2fe. 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/DEM301969012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1402b20eaf870bdd48a8cb061137ad219431739926ab1c729b0b9761bd8fccc8. 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/DEM301969015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd79c1ab57e2ddcf41fb75bf5cb8b3fc723afbbcdf90b2fef776c15ebfc1bb1. 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/DEM301969016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7268c2aa3b4c7396a9fba98eb676ec5e89f6a37930ea0680a5b28fae8c5922c5. 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/DEM301969017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cb510d6ebe90214a31c12867caaae7e5218e8be1dc30f941ed4c1e26690753. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:54Z), 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/DEM301969018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76759f970f06371b1b30b789cdc4b8d173a279461022aab0e5fd81e699db7a51. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEM301969019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c9ce36afce646a2e29feb554e9a17bac02465f1ff4a688282f3f437bbcbe9a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEM301969020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc430078346108b4cdcef330cb501d465302c9e428d3a0747b4011960f7cce7c2. 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/DEM302169024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc039ba837de38703a6aee19536898be5e1b3f8d71651530c1de28938b714cc08. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/DEM302169026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d600809d3517d7c1ecd587747b7e29baa0340c9390d883df72b0f77babb250d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEM302169027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75740d9ffb7ec133921de3fd56f05947399297b48a7a44076f0b03de9fcab3d. 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/DEM302169028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4a2817c4c36ec53a76e4ca73f1d571d2aa54abc184f50c2bdc09b186b1b9ac. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/DEM302169030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fee51733599656ec6371684ca2f9a32a131acfc9240b27f4278c7e4cc936153. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:02:49Z), 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/DEM302169031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d15b5b3c871aad0c3899e29a5ff90464145ff2b02922f71063b32a182e11205. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEM302169032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d438f8cc91752a7fc204345164cf2ae48ff7ff34e0961a7bbab765bad24e91c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:32:03Z), 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/DEM302169033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb75533a0396639b486d163cf405962f20b29c84edde4b2478fe49c8b65011ed. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:44:16Z), 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/DEM302169034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4db5f5bd22e9698fd6c7ecf726d551401978898db7794f9138a88e25084ab8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:37:37Z), 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/DEM302169036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3034d0ca1fe10b2a7dca7c8c304a0564dab0b297c7c3b077c6bd81f9d7a6908. 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/DEM302169037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0fe383aa82fa15cdc1ae34d088454786a819602a0340162aa40602244b5353. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:02:45Z), 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/DEM302269041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c44ac49bae7cb36b95099502b2e7d67c6dfea7ee4e800109c4559e1cd13af0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEM302269039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a80e5a7196a759b869b237d43acc02ae55fe7106b9fddc76010e7f3ecfb3292. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEM302269038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a7616f584dcb2ca50c9054f6b4ef93ba1bcf5812f7566139d0e83d893d8005. 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/DEM302269045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7a0ca6b3e7174d66f6d26955160ba823df14156bccf068830f97f7eefec6a4. 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/QZTAU2314435.