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 0x39d8629e167ef2d6df93556044822adc1299d18c7432e1ce967ef579106839be. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ade044fd-30f6-4125-b8e8-fc4709d29ce6.json and https://artists.proofprofile.net/proofs/artist/ade044fd-30f6-4125-b8e8-fc4709d29ce6.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 0xc9e2d407349c38a1667c3275bf7bc20fac4ecb09c4616a88e05c320bf34c5be5. 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/BRNUL0800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d3c0bb673df82066cb50c23ba00bef957a65c23f816e3559627cf66d6699bb. 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/BRNUL0800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701b90d7edd4e25ce5eafbe1484cb629b7ce0da41ad8ec4e6fddb7f9ba399aa2. 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/BRNUL0800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eff0b799b0c992af604d357aa26481d44a563bb18d26bb97e3d1900f62da3ef. 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/BRNUL0800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460a3bf19d7efbacd65faef872959a60f517df01c88d1ced9931cdf8cd42c6fe. 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/BRNUL0800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c6801674d5007f7968145b6396313022f4db2326af653863e916be25265c6b. 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/BRNUL0800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c300d6e17c7af6409122f9c34c3a6c73c058600c7c7eb17efddc9a94b8866c5. 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/BRNUL0800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8f5d407b0e68fd142b09fa80b2baa5ca67f025178ab355f511bd4d2e9d2f20. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRNUL0800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9985e8d690fb0b17444e6d7025bcb15706f2ae1fe1ab98992256c9b3738fa71. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/BRNUL0800002.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995ecc65ac9119ecaa3f0b755b4afdbd2ea39fdbada4cf7b7bb74015b453f6d6. 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/BRDEP0300274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996d90099e76ff2513ad92ba6c260b28320e5d1fa2371dd238caf14536f51ade. 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/BRDEP0300275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc933ced2048a6beae22d8a070ea2c48b3721b0294507aab0e5f9615ed752a41. 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/BRDEP0300276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b3963791b02ebcd21dc5a1a6af2145e38add514bddba1e2e00f02647019770. 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/BRDEP0300277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f58708c8c867cf187e0eda19a7a8d03a4ad8c6ec8e403991ccd25bb23f5dda. 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/BRDEP0300279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f541392fc96aafa6b2d1b01e4252e3a759ad5192aefda88a338b1af1528da21. 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/BRDEP0300281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1994152fe5b8346c244d5dd5096e511014a73b6e85c0645617e4dee2f3bbbd. 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/BRDEP0300283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7343f1c67651f5eda9e4b68705b077e6dc69a74264ef84b1e2950c04bb2c5f. 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/BRDEP0300285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2a35a5f6eb0cb6c06fcc676c30f1f08190a1fbd96196e0d5c1f2a1d4108aa0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRDEP0300287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc3c1742a1a59576d70445aee0c2a767c089d5c9e2bb9f682014ecb144e1d27. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:04:49Z), 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/BRDEP0300280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f2872c5fef2951f2ae3b1e15de857e1614189793e2fb8f9bffa6e82a998855. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BRDEP0300278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8cf2867fcaf79ece634d19df3699497541691cdb73b0536f9bc84c52660597. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/BRDEP0300282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb800555bbcf844ad76e7967bc4ad5220ab4fca3e67971e64dc7c0e3019e8b62. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/BRDEP0300284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf592ad6ff0a25b6f5ff1a38324515cc151ceaf4288cb7d2971d5d58ab53c4bd4. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/BRDEP0300286.