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 0x56e5432787531d3cffd29ccafc3f0c4848a439a39926511b8ef074eab3a0d254. 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/625cca7b-bbab-42d8-832e-e93778f7f60e.json and https://artists.proofprofile.net/proofs/artist/625cca7b-bbab-42d8-832e-e93778f7f60e.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 0x9cd569918b6fa6519b809f300f5dc2d81c968ef62c13cc2cfe38eb8a3e9ace78. 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/BRL1P2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd984ad7fede08179bd1e75af3576d62b3b3895804c577c1dda568d41efb2b5c6. 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/BRL1P2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d4f06ff9db7a3af4fee4957a2f823c78c7232a9f1d1a478a31c98ac7a1c2b0. 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/BRL1P2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fad1b09534d62bd6933f08d2262ca4f7f3342a92518e20763e2d1f8ba855aa. 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/BRL1P2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9c4378db41e6812e63df12579f402a7b2975fc8ea73638fb827c8ef2b56ee6. 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/BRL1P2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7239b99b53eba64e216d6d0e19e3619614f2ffd745d3019badba7e4a562af0ab. 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/BRL1P2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4200be0fba3d9e07e112b0b07e67450b9f471cb6cc3849e7add1ffadb7b800. 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/BRL1P2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f10dc0288c999e35d708de9d8a5203df12ab422a8f0649524b67b2706748eb. 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/BCRR02300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7f78fcb2e831541b2d147293e41c52ea72103b91648377e14b81be94b84a3c. 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/BCBNU2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a472913166335b1565aa85b67b689a558d715a6720754a92f90128da6ffe65a. 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/BCBNU2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87bab9f6269e0c493f1a0c43b4a718ab06d276802f8b1f9a7e40866ae2a0511. 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/BCBNU2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64807f4440fc75925e36338353fc0d81e23813390fa6b7f7ca1aa811d6e8dd4. 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/BCBNU2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3762b09660d2dfd3a4519728f4f8a0b7da7b20b57dbe1b68dd86a9485b03b7e1. 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/BCBNU2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560b8c52d58cf08d005cce5254432bd1cd8b4c7d8e80b38d59437543a1ae9de8. 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/BCBNU2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36702469dbdcf5f2ea36904b3cf0c9c15243e1068afb1364e8359a399f0d4fa4. 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/BCBNU2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabbcaadc4911cbbb3d7436bc87609b93967edaa0affdc3acd64e3aca3eef365. 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/BCBNU2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b7aca6f3bbb364a150f531ed3b5c4ccf89a29bdf468be5e1a12c5fbcd45bc6. 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/BCBNU2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64807f4440fc75925e36338353fc0d81e23813390fa6b7f7ca1aa811d6e8dd4. 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/BCBNU2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1e78f516d542c63de4aa5f947515853024a25d1a00c321227e0a687c411e48. 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/BCBNU2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa933f2ffd0cb067eff58463cbd17ba7079533cb1100da9146e2fea27ecf7e8d9. 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/QZNJW2203348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee02af8b27015d539f98e6cee152980d49e0fa0fd24bfa86c45dcce711004ea. 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/BCBNU2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7866fde0e5f6b960a3c9d68eec902a12b9d142b6e10259a06d39bb0ba68a8d97. 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/BKMTI2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b87d3ae6576195f93e6340bcb5ae53f7a0520627a196fbe10c2f98c043065bb. 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/BKMTI2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b2d408a53ea076bb4e77a865c040bfd92ef721d63b489ae11b90951300a5fa. 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/BXE9Q2200003.