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 0x6f394c518ce632db3a2789034d0684261e6a5cf3e2762d5459912f5c56237669. 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/3e8fa7ba-fa72-4960-aa5e-17d794218f61.json and https://artists.proofprofile.net/proofs/artist/3e8fa7ba-fa72-4960-aa5e-17d794218f61.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 0xc86e14478eefe0f5b401a4cdd58e7e8729d02bfd82649951724b27685c900d6e. 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/QM24S2306001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbb03e01fa9b569d38549d1f9e4cb40839ba6c9dc789a50bac8f086a91cda3e. 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/QM24S2304458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb617d2864183f62203c7a04207e2e531a5259f24ad89fc9d595698a99571386c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN72342956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4f2780f589b90b868ba7709a6e806b99b671cb28961b711880ba20344fd0de. 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/USA2P2229639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad4dc2af9bcc02a8351f6c4a6d308f388048b276565700fe77fbc2e4737aec6. 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/USA2P2207037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4751064d1f3acde93076ee1f66d75af864c39c1a6f36ea9b3e7221fc406f5b01. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2153429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91a864daecb253f3984d19c3e0e49cfc8f209ab83baad9dbfade0abd2eff7af. 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/USA2P2146581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc57056ef1ae46e1dd7cf34a9cb925ce5a3dbb7dd4e0d5b78376a12deb48991. 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/USA2P2143646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee686e59611d13bef9577ddd68f08ba51ab6cd45175ebc4881e15ef2f60699f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USA2P2146580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bd50395ae9b3b224ff6e149f6bc78c2c3600133b441ce629605711f11fe8cb. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/USA2P2111798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc57056ef1ae46e1dd7cf34a9cb925ce5a3dbb7dd4e0d5b78376a12deb48991. 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/USA2P2143646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a2891c4f906d49fd64101d90c9eb6871766860d2889edb563941672f23a631. 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/USA2P2130220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831cbb32e3ceeaaca0a6bd98ab1f171d9ac92b62d01546525ac4521a1dcf869e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2122216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f45992d224a4df698e68472a770c512b48a7442688aa70bd17f39fc30f56305. 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/USA2P2117142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bd50395ae9b3b224ff6e149f6bc78c2c3600133b441ce629605711f11fe8cb. 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/USA2P2111798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b2ce69077ae37d89e95fd2aaf3b3c84a9d5612d1dc25f602ff135b765d3033. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USA2P2033962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e407d606f9012ed1609b44ac1a6511940e6676b14d030b84e8016cae90eda4e. 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/USA2P2038841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53078e826ba28b294526f5e82371d51b511ad13abd3dc07412450e32d7af032. 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/USA2P2042557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911e432470f54882a0b1738cff099e6a42e871fbc194af86b244b168d7c8df5c. 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/USA2P2042558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e407d606f9012ed1609b44ac1a6511940e6676b14d030b84e8016cae90eda4e. 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/USA2P2038841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b2ce69077ae37d89e95fd2aaf3b3c84a9d5612d1dc25f602ff135b765d3033. 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/USA2P2033962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baac4d55e7f48a856dc3e7f86fdd23671f6cef368d3da1f7c10b9a895d29629. 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/USA2P2029695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa621b21d44156b252e8aa6167b03cbda6a70754727d294087636b2975b30e19e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2025750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbcf413314b9ef125ea220acb60aa4a29363c25a3cdc2e72ba8a273f34113ad. 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/QZK6Q1946888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bfb04853e41ab9f75783845b256e2ef2cc0c4d088d6639985f567806d3f276. 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/QZHN71982003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88c974e75ec4ee3302fb25b2a9f9eb1958750c790d676581d09ba55eafe1157. 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/QZK6Q1946889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda87204f11f4c972f1166731cecb2982c211d03ba26b83c8b2a48c5e5253290. 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/QZHNA1944842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498496135475a66f86ee706d2b3153f0b896235b82b454a999d2fb2f2690b96f. 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/QZK6Q1946890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda87204f11f4c972f1166731cecb2982c211d03ba26b83c8b2a48c5e5253290. 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/QZHNA1944842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bfb04853e41ab9f75783845b256e2ef2cc0c4d088d6639985f567806d3f276. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN71982003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c391e06006eda88b894c2a419f1ba57ef7e95c80db5f281a82595a2327ffd20. 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/QZES71964247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38400be7710a790a11a0e6a7e68f88f9187bb078e7812b115cdc11c9bbdb605a. 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/QZES51966468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd4fb7c9456d0d981a28200057271640cf43682aa33466b338b9f192f920f05. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA51925825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf51533bc429625dab4c1fe5d6b1931d74490e962dda10ead297508c569583dd. 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/QZES81854130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1975e51c7fed3b35d86d72401c3cd1ed6510a1e0cc3bd04966853d5d840542ee. 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/QZDA71843780.