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 0x05f2c222a9492219cc6d8c5e7ace14342d56385557c057bfcf0cac6dc8319ef9. 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/ba10a251-9e14-468f-9240-e691d80897d2.json and https://artists.proofprofile.net/proofs/artist/ba10a251-9e14-468f-9240-e691d80897d2.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 0x31a28a14fc3289dc42ecc2a5a739c68553606b4d9828e3c3c5083bb82ed9950e. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:05:36Z), 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/ESA012030985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f6b7fbafccf25c30ef7a5eab2bf73b6b785d9415b54c9060b112989e39ec07. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ESA012030986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4b4e0323aeef20e1e111b5d838c8910840003c35b1bd024afc4bfeaf03d0dd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ESA012030987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb303e3f12057b8d997a6fa3fa015fba3d93fe7d42e957def2e887ece78bcc0af. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ESA012030988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c3cda0bc3efa205890a202b5ae9b97d1f64f384f2b14aaf355ea1fa00f396c. 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/ESA012030989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1883f9bc7518084d500a8183c7c081cd50aef0dcfcc39fe5c6defcb0330edc2c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ESA012030990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3217cf6e270265df7d49c700693f4cc201350349bc3c089b48bb19ec1156782. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ESA012030991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefeb07cfd4f333fa9d4bad9ee06f61b0bfe96df5ada6edaaab3abbfdc1aa8484. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ESA012030992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23197b74a486ea319f671f4320943d3dce163a0d9dc461e57ae839ef4d3682b9. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:53:31Z), 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/ESA012030993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db2cc159962930e7900126ac53b2257bba236be6defdd8c250505d1d55ca33b. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:58:36Z), 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/ESA012030994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf57493410faf9027743fbf7a9479bad7b304ae549f79c27205ea87a2258f9ff. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/AR0GJ2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd9d90db5c8ce1cb7b8062cd11ac4f61fca7b14f059a71901fe71cf3c7d7a28. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/AR0GJ2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf3fdc16bd666415ee93a18c70fdb73ba7c7c4c7773250e26b7c71f51df5faa. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:00Z), 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/AR0GJ2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7878149c8da5089722eddd95dcb6de34f97d216e18423500d3b770d5c4945eb2. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/AR0GJ2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef70695ff0d8906b745a5b7c43d2247b0282545f8836bd67c350bfe45f33eb1. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/AR0GJ2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d200f6f3972d10e172c3f025f0442ea8d8d958d3256e1a7b6c8bcd04d49b44e. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/AR0GJ2100018.