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 0x829b8870e7a2d5ccfe46df0842afa573b69991bc1513549ff789192a2093d417. 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/6ee77815-f680-426c-9fa9-f0386362e398.json and https://artists.proofprofile.net/proofs/artist/6ee77815-f680-426c-9fa9-f0386362e398.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 0x508eee000a087c87d06782a2a02b626c73a94f9819268787e3bd47cad01169f4. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:30:42Z), 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/GXHAF2520585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0e66870b6b472857b62d998979e2b55269134c002e3130e3b160649249f7d7. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GXHAF2526444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52465e04ea4bb22afd58722587a68f6dc25784315abbfc00a104a1c13a2e40fe. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GXHAF2526445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399d09c723ec54433d145ee8004b41a0754a1c4fd51afeb236887a8daae09d9f. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:00Z), 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/GXHAF2526446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ecdd13e5ae9fb3b52278a4a5b28eb2dfeacdd1cb9ff7877bb68c5f2c5838ea. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/GXHAF2526447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e173fea47ceef87a84de732d42de6db3b4c918efa4273954a51b7a821f65e0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GXHAF2526448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2357189fa2e783d0d83a25861105ffdbfbe699398e3f79ee86422559b7570220. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:40:34Z), 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/GXHAF2526449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff9e0e439c86efb488e8027d4544f92d5723e8e066df56e3a2502c98d55420b. 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/GXHAF2534498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815f43913ea24fc223f1d04ad593fe4dc785606c264166b82c6672fa4254e0ea. 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/GXHAF2534499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e08c3a55e6dedc9fda699bdef23f403a98ff6eef25650300e5ce5ea8e5ab3d. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:44:20Z), 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/GXHAF2534500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28829a52e1be8487d50765345b02aee459360fe9e560fffeb4bdd05a1b55c5a3. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GXHAF2534501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26451ac9fa97b98a53639b9faf69a19122dbe691f7ebf5a129fd70ef6d02711. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GXHAF2534502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a091a6e2f80353a4cbbd3bac530e160d32db2654a62788f4af3d6ba150c770. 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/GXHAF2534503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaea19c15e109f26230ca25607b10790805d3c2549326ac102d22adaba43c1e. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:23:28Z), 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/GXHAF2534504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afc1d3d41f261818792c8cae1a7db87ccfa8af310b9bd807cba74a91bdb0863. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/GXHAF2534505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed69cad346e995affa83e07708043660916a792bf4f41f54c78a2732c541a605. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:33:33Z), 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/GXHAF2534506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a5a8ec9458254ee2a1e47f277270196b2f0d99de82d702d49678690a137cc8. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:23:28Z), 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/GXHAF2534507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d7f45251a1d549ec6c5a9619d1fee9567f9a3455888162a4301792c153b455. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GXHAF2534508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb4078a95b5df17583e1a516c4276159a3608bb8f475f164da2cd60f591c29e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:45:18Z), 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/GXHAF2534509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b0a535fccf7306a83084c01ba72a50e35af7d161dc07a42ee63f24958c91f9. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:56:40Z), 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/GXHAF2534510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19591a319183c7a77e2b0d02952ea52a81c2fea80f417802cbc233b982b2045. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:09:59Z), 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/GXHAF2534511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c805b8dbcf140712ddae9b7d6e97e943d1f337546bc83575aaa6961e5a7eed5. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GXHAF2577449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee7994bee4e7d3028d8fe4bf01727642d25c614c2d61d66a5822f6b5b124cf2. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GXHAF2577450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35231cf1201dbc0fb298bf7375d4b08677edb5c9f12213ef180c1a0d5f5d53c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GXHAF2577451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2227a256e77f18b1a3eaddda6ede16fbadce6a056200fa0b893b06e155157e. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/GXHAF2577452.