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 0x0b711b7ad6e3d183f97f0d66a5a9fdcc77a0448ebad2ab945bf9a800288c5ae2. 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/bae8948c-040a-466b-9123-8682e3aa83ce.json and https://artists.proofprofile.net/proofs/artist/bae8948c-040a-466b-9123-8682e3aa83ce.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 0x3f6c079565d25817377666f3fef791e33c58a2eb9734524926ccd9d8d7ba6dad. 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/ES71G1725029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207429c4b4c4fa5bc167597226875ea499c78fa6cce365c42fda1ea9e4c52914. 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/ES71G1725022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39b6abe646526c480a386649df7e427379fc81c1160e42a6edab0cc647bb544. 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/ES71G1725028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b97efe418d4b114a03465334cf1d066f9b27f0e2df521960e9cb72e90707acf. 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/TCADQ1877042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b8272804bf3baf138956bd31df1e96f37528fc905768434df7cf836e603211. 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/TCADQ1877057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3e9e7c06d87131e2ca1fe3f4c8e4e84e6c9d20784e58126706f041c11c7ad9. 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/TCADQ1877062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e346ae8b5305f5ebd4871b6d8b57818e54b7a954ef714170e0a9ae2513377b. 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/TCADQ1877065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c204edc394c1bf81d44380a2e98ee7c7c4a12781544de9df20007358ab3bfb0. 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/TCADQ1877069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2db809f5c8001389dc1fe60a4eca3f43c537cdc3ba6a9a5d75dd9928975121c. 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/TCADQ1877070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf062871d97aca83183d73fb692c54310c51d686147e8afc139e25e056b1e7145. 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/TCADQ1877072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ab318f0fa5970852f004bffb5190d6d49c2d5d405a520dcfd35566190580cb. 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/TCADQ1877074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0980ab5f26f46261a175bbc020d431e850c21a6eddedaa5c5341f391a94de84e. 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/TCADQ1877080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbc0b18b3f512e0db5d6b72d755035edab9aa81d6797e293aa783407ed34bf4. 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/TCADQ1877082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e88949782c20e762bc7549e7fb8387fe2e8bd1f5c0082936bad11f952d8a28. 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/TCADQ1877089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b54fff443141f54c1d56e36de559915a18f85d4de04c0bd78dda1bedfa4fa8. 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/TCADQ1877091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a41c94aa1a8504536eed2570d76dd2c6e0c6a3d46732df6bed4cdd30194b2a. 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/TCADQ1877094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc034f07c18e48df5a4c9327f28eacf3fb1e4b48c97892af80f96a7e7cf38f7. 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/TCADQ1877095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7b6e5abb03d55d3d222050766b9f12707572a82ccb16cee7fc5b41795490fb. 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/TCADQ1877098.