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 0xfae7074f51e9b74ede4960dea7cd62eaff36e618936a92759a5d8ee9f9e288ac. 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/77d0391b-94aa-4c09-ab5a-705644ccd953.json and https://artists.proofprofile.net/proofs/artist/77d0391b-94aa-4c09-ab5a-705644ccd953.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 0x80707fc115301aa422e9f4ba848fa6bcd1e7b47a4d8d4e8c1b58181d3888f301. 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/DEE862401123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1dd164b64f272ab4fe9093aa41fd4f2b7d4ca110d11ea7feeff244ef21ff9b. 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/DEE862401587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08d9843de94b6327681be6d437875c866b1082a31eb956b7f228cbb32ba49a9. 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/DEE862401588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a3bdf2165cd4fa05fcfdfca80288f5fe28d531b15f2b34bb7dd493f48c1171. 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/DEE862401589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02e242709dfbdfdc0c6063fe19613210e77b59859eadf622fe18f89e9390373. 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/DEE862401590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8a0cae2f97245779e9265d0820c89f35d3aeb2938084de077c0dd7ee2b1191. 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/DEE862401591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453d3a03d8084a681c6d04610bdbf77a8eaba11232b4ad1ec98bcea8db1aa5c3. 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/DEE862401592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f07e21e54c008036c9c0f692d06c55a77974ae12f1b8031facb3b01e3ed048. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEE862401593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf0332adf836b3ba21de1e1274312dc9577eb8f5cd38ab4b9549eded6a9a866. 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/DEE862401594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78053929fea858c80b6eedb60860c39e03461d26db8cf2c9effcc8e48c990dfe. 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/DEE862401595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97604bb26d8b182ade30414ad15700950241deb3f9fb87c3ec90ca6fd4399f6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEE862401596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52dc658ddd6e8d68130ce0a05ab9a15f162f25baeb26a6295e1f5f63a08d0cba. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/DEE862401597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700c791ad202769f1327b94745738f081c7576171eef656d6d31b2bf81d86fee. 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/DEE862401598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc1007a02e4911052ca60adc678ca1e8dac3fda20327a29d1435f061a8150b2. 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/DEE862401599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b946ef5d8e02b88332a98c698d95b930f6d7f5919ba0af0cdc665873f273edf. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEE862401600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa81c0fea0c32c3ee96c149630f2a67c3e0acb88d3b6af66ca5be8e15ac765e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEE862401601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca2e5c212dafe385e429108bc3be57fd772858cefc5d0eaa1d49e9cca9522f3. 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/DEE862401602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453d3a03d8084a681c6d04610bdbf77a8eaba11232b4ad1ec98bcea8db1aa5c3. 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/DEE862401592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52dc658ddd6e8d68130ce0a05ab9a15f162f25baeb26a6295e1f5f63a08d0cba. 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/DEE862401597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a3bdf2165cd4fa05fcfdfca80288f5fe28d531b15f2b34bb7dd493f48c1171. 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/DEE862401589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f07e21e54c008036c9c0f692d06c55a77974ae12f1b8031facb3b01e3ed048. 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/DEE862401593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97604bb26d8b182ade30414ad15700950241deb3f9fb87c3ec90ca6fd4399f6. 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/DEE862401596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa81c0fea0c32c3ee96c149630f2a67c3e0acb88d3b6af66ca5be8e15ac765e. 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/DEE862401601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b946ef5d8e02b88332a98c698d95b930f6d7f5919ba0af0cdc665873f273edf. 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/DEE862401600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1dd164b64f272ab4fe9093aa41fd4f2b7d4ca110d11ea7feeff244ef21ff9b. 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/DEE862401587.