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 0xc3f8d0e84567b1938e1cbb5081792cd5ad67a2820e143a48dfef692e659bd504. 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/78fcd773-7aca-4e3f-8505-9a2655ae6253.json and https://artists.proofprofile.net/proofs/artist/78fcd773-7aca-4e3f-8505-9a2655ae6253.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 0xcd5290d325acd796c6ba7d081200c481c36657be4285ed6e1a4ec7b4d52497df. 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/QZFZ32347461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d3c663403d815f34582745deab7777e36c255560c0f376bc9c9e28db2a0da5. 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/UKZGC2410552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5795c2d4d5b36422ffba0c87be7bd30b6b294042b282ad0fa6f0dfffcf0eab2c. 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/UKZGC2404273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61079722ac3e6784f1ba8c8edb397aeacfd975a66077042e9683d439cf2cb150. 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/QZNWY2370658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2912912d840270cb132e3626c747c7011ae060798580a7a9430c397b7de70eab. 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/CA5KR2362741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b683a156c73393747823b759ff3659f44fab560fa73c0415297c98134b7fed0. 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/UKZGC2402240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426e938f8a87ada1e92aa6301fa74ae15e1ecf9c3cf432408f0d1cc54438ea67. 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/QMFMG2355418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db340e2a69df60f2523836fe8c1fbecedca8c0dd85d9c0f38d84b8a6f55faaf. 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/QZTAU2260996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4014da996fc891818c3b2c806f0c1262d3e753a4cdcda206468693f415c5232e. 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/UKZGC2408314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39ae4c0338706b6fb14f37f2b7f04de3b7bd470c152e4108141647c8d9690dc. 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/UKZGC2405481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383ecbd9bbf94ceff9fbc36ac1ed970c2a6b3487b876ca8d765b5effac882e78. 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/CAQOI2301499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b228fdb5ba75f953e82524758cf7cf4b75b4c9027f03a71b4f7d1449f0791fe. 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/UKZGC2401552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458064ab3af1755d61e21fd5ff2dcb21bd93d51b06ee35cbf87d7c348ba712c3. 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/QMFMF2305216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c0da285111df10110acba02627e0a8da3d2f818e73e4368fd5716fc3897479. 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/UKZGC2403400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b6ca002bb18ee146c740c13d4c5bd40e9d9592ad02cae30f911429517af377. 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/SE6XY2224763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7c0397a73b02c2106a9bc7160dad0b2cf96c06327901c6965ca57611170985. 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/QZHNB2383644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33fe55ea2741abad1e9c7908cb90a088001991570c43d14560b734abd32e452. 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/UKZGC2307149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15884a9b002950cfd96298b21ce11025917b1d9b118cf6f250f0ec584bab8825. 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/QZFZ62223168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa09c360883befca047bc76935f420e14143d7a7d7e5b77eac53b0611712b23e. 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/QZHN52287343.