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 0xcce163c8ef5a168f8647cc626fd49204b41cf641960656414aef28cfd3568402. 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/90b3b3df-9f74-4f4b-b75f-916276414007.json and https://artists.proofprofile.net/proofs/artist/90b3b3df-9f74-4f4b-b75f-916276414007.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 0x190224c01e0e686e8a958eed4eb3d55c11fce63f9b13d735ccbcf6206db65d0c. 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/TR0061900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f26dba99819db73a9e0a8bf48e7c873d9c513a9f40e7bd278f682675f266cc. 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/TR0061900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128af053221c1b59a57cd4f68b0e1c917e9e03818ab49603f600b9c74178d096. 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/TR0061900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47048280b4221a4008154ddacdc2cc7bcf14c95fbbf839f395e5d08cb7a340d4. 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/TR0061900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bdd16e199d4aaeccada4dd07ee51b3955aea36b032a0c3998349c9d5be25c6. 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/TR0061900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8891e1d009d2742a68b330264b9ffa4017a413f09c3475e33414657b664dfbf0. 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/TR0061900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590c998f20d2d9b5cc7c39d74f9f97aebdcda17244053e5cd70986fa2a6b6bf7. 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/TR0061900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c11693427b2ac02b5887030535b6eebfd1f7c4692b4fb1c2a2770fd3d169d3. 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/TR0061900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada601cc9fa35d854b481e756fa6097f1340770b5044a831b0c8f3795135e179. 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/TR0061900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dff5b07f2d71bde1964def3fa2f9e3ffe87fa8f6de588d02e10fe7c704e449. 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/TR0061900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a5a34dd41ae24ea894ff559c5fad441e92636832c9cb89be54611607552233. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TR0061900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917c94f8ccad90e79e89f6ea607b9833c6ce43dd9fe0c735ee21506af06a40c7. 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/TR0061900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb21d64c8e1940fbab5f56935085212f61b4973c308bf9d12db61704d974046. 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/TR0061800342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683e4d877fabb80e5eb01a5d0990b6aa44833a18d511b3aab05b9249281be327. 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/TR0061900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bcdf36f3205fc55abd9b3cb7ba1fda8780d0fa073ab8e20638094094ff3cc1. 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/TR0061900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a04c82edc7190307ac3abf5387c045fa1e01017de9d8d263c5425dd8257e5b. 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/TR0061400366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ac2d96fbb637efa9638183ec135c598d1fb3a7483df6db56f36d3fb85221a2. 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/TR0061400367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9d722531f7bf6bca378a76fcef0a845a15680c8abda772a4c0f477ff055292. 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/TR0061400378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa5e20256a05eade6015de2b555092dd7fda0bedb9ccfc4f75b90ca2567a66d. 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/TR0061400368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f3d43ee236a83786b379279f689d35853be438aa55a1f2601885548201b180. 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/TR0061400369.