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 0xcc1ee3e8c2bdbaf0ed6bba2fb109a5da7e34a9e0c2e4ec3326b5723a0362c9c7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b427f4f-854a-43fe-ab19-797a5509c563.json and https://artists.proofprofile.net/proofs/artist/8b427f4f-854a-43fe-ab19-797a5509c563.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 0xae18ce12724bc3825c78824f1d92a9ea0f5209b621b9ef2534226467928c5e0f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/EGA010560758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42ebee56f7b5c8a6d6baddb7f623cb5d9f9804373b13220d142793be00b393e. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/EGA072200986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42ebee56f7b5c8a6d6baddb7f623cb5d9f9804373b13220d142793be00b393e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/EGA072200986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5019f2756f4d3e3bb3851ffc8fb9f2ddc502134dcab4dce340c73f32c814f4fc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/EGA072201102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5019f2756f4d3e3bb3851ffc8fb9f2ddc502134dcab4dce340c73f32c814f4fc. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/EGA072201102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c5456b5665369c32dde3184a57b5250e9a58cec9610f10e096ed25ab9b14c8. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/EGA072300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c5456b5665369c32dde3184a57b5250e9a58cec9610f10e096ed25ab9b14c8. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/EGA072300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7d8d47a6bd41ff074393f898833e5bc3d6046d02f9c64b988f24dea29ad9e8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/EGA072300289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7d8d47a6bd41ff074393f898833e5bc3d6046d02f9c64b988f24dea29ad9e8. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:35:04Z), 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/EGA072300289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c1375f7bb4bc7ec45a20a532d0d28e96fe68567a7411ca9a69697cc586914d. 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/EGA010560155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e8536c620691b476a90060af9b7781a54f15f09d7a640533f3b0569060e7d1. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:14:10Z), 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/EGA010560813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6280854daf3b95197ffa59a11244e1d2660d93e21cb1553871e550bfb991f13. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/EGA012500501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdb5068196e7d3d162f0c47182c4dcd1dcc4ed0439ac50e1b3f2b402a9437eb. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/AE2DY2500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae9afbe4e2c695b8f1505716238137c67ff423b5b229974cfcc4913e113714e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AE2DY2500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae9afbe4e2c695b8f1505716238137c67ff423b5b229974cfcc4913e113714e. 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/AE2DY2500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7738369a464ac3b7bcc8c2b647ca685967c64ce065eca013fd80885554e7b6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AE2DY2500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc789bdf18662d28d74be0deddb43bea1bc1b3241c46cd9478090e240b439db50. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/AE2DY2500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eaa3e6eb729acf9c33dd4b7831685974d6b50a387b208f48a043f1908f3fdac. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/AE2DY2500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a129f5164452f1c13058dd22a768c9408a10811a37c0eca39e8f63783e02a3b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:40:49Z), 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/AE2DY2500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18db0c8a47dca3cf78682d75c3b6fac77dfaa7afac1050ebc1351903d2278cf6. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/AE2DY2500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319bb283ef39fdc697ddfc12d72aeff06977b1bbf540044035c0b8f99cf8e034. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/AE2DY2500170.