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 0xc3660393def0f8231620bedf046a1f946dde839e2e1d29e18b6667e0ccadab93. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b6ff98d-c571-4572-87ca-686af8b2fcea.json and https://artists.proofprofile.net/proofs/artist/9b6ff98d-c571-4572-87ca-686af8b2fcea.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 0x12925326414ed7e37b3c943313f5d8fb4e6abcef47f9278be31186b119af421c. 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/GXF9Q2568611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba49cd37023ecc051cece833c849c5251a0f4a1b21e0ab13b96789f912cf2ccf. 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/GXF9Q2568612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0a513d4547e102a40223d2ba7e2260ac3121f1cca74f02a212bf2e431a6e5e. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:10:45Z), 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/GXF9Q2568613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb0e528ed64b29991ecd498719f734d2eb79bd569de2b995db965898ca7cf94. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:08:04Z), 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/GXF9Q2568614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d93d736a8181331f14a3f2054c68f38ed88fdd31ad5e5a6a5f93e0601b0ad59. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GXF9Q2568615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423cafd6406326d93cdb58dc6c09a7b7631a48cadddade69237ba2e2f0e5561c. 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/GXF9Q2568616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb2dc09d5c3e3806152f2a6f6b2e2abc2c4d1015ab60c97fcfb4b47048ed112. 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/GXF9Q2568617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa818f23b6171ad95885c6facec1be38d7236a44b33999a9a3b59d0915e5cf06a. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GXF9Q2568618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753cd61185310277779f5feb182a691ddfc1b79610f628f4888b7119a899d3ea. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GXF9Q2568619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17ecaeae81e0b28a47586ba1b8849d5801d44cd65ac641fa09e3e4385b3f6dc. 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/GXF9Q2568620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dda0eb1776116c7e9ae5d92f5266ff85b2134cad66023308e6a533783fdc297. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GXF9Q2568622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84798b4b4a4ba370c964aa14fad192196caac055a6dc1d254e552173cf242e42. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:36:35Z), 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/GXF9Q2577153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34490ef7ebbfe035a44d2488e2b477d6b66ec398eba7c735888536e2f45f504c. 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/GXF9Q2577154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe25ade7e6a3ad08e2cc1f2e11782209108a6cae3918f50da7300cb841810819. 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/GXF9Q2577155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00717786ca8c1349561389b05bd84ae6e35cff675a5ecc8ed383f2816b42d4c. 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/GXF9Q2577156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee44dd4f61cf17e170974f8312fe6ade1e49811e73c1a129e021fb448c71135. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:08:33Z), 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/GXF9Q2577157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329bb6ec28c6b987d29c120233af1c07104e77383d660be7b9a43d0b4d7dc71b. 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/GXF9Q2577158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015cd355b407255650b2f941b5ab9a2708ee2f73693582d24c14df7938c44890. 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/GXF9Q2577159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c64987d10b958814792a96fb729aab632b3cc168e812fa959b6a42fb9d890fc. 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/GXF9Q2577160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272eca3101e523fc181c8847500ffd2e63a819cda2b0449b4d5e972d9c4c163a. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:02:52Z), 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/GXF9Q2577162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e072e174e6f259dccf1bf8c564e64f83d0c183c755b4eb7ca964ea756075245. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXF9Q2577163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a8a968fa5e6eb8a53fad8058b01309d23736efb3f85d05e97c652da553d960. 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/GXF9Q2577164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3653e534b41a5bc62a89cbdbec7d1a60cfc15135215c93697a0a6b5a653a53e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:53:15Z), 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/GXF9Q2577165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297f9be27878600d691f6eaf1f9093e4183df20f8ede1193148682b5c95be4fe. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXF9Q2577166.