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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f9360d6ecac817b975faf8997fa7db0182695afb7827c684cf0a69b12834a5. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9dd0ef76-82b2-4b3b-9069-87791d06a6f5.json and https://artists.proofprofile.net/proofs/artist/9dd0ef76-82b2-4b3b-9069-87791d06a6f5.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307429937d2ef11117ab3c0deefd7e65b33f1202fd892e92159d0ff0ab57cd46. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2444224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7890e535150c054c6d5704a74af5336ee84f02cea8fcbd054ec081496d00b373. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2424882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdba365fddfb4ad8320451f07beee4c916c45b0e0f12c5e50269fd94111e78bb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2421073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18bc3763b9c80246618bcb611f1c18eac7bec220c9a8ff146fc9036b66a5319. 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/UKU932300260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5563ae783e3f9a7f2ea73640985375fa70eec0e84706830b7a9ab6b9f05939c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKU932300261.
Soul Connection - Karlo Wanny & S.ONE Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1087f0a01d8752ba45907111515ab6bb3f5c4a85ed6805db718f496ea9ffa0d2. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/UKU932300262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406a4085748340442ebfa9c3302bfd210f17348d3ab272ab21df7d4273168560. 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/UKU932300263.
Soul Connection - Mariz & Léo Diniz (BR) Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46eb189d15f6d16313dd20f41bd60e08fc5e5a05644c9fae7e03ba826f22d82. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKU932300264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b877e4f69b717bdcf395a48e6f8c859aabbb79537f99208bda57111899feec8. 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/UKU932300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bfa4175a3b5e4c62883d9b8bacfabd8bbe716ed83c17af67d876af4be1eef9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKU932300266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92332580479670f1a6bc3c2f74a3e283d4ef97a537a5dca1f72b029b38e6f7f. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/UKU932300267.
Soul Connection - Vakabular & Under Sanctions Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab56ee2d0e10416753f917a4f0ec0b4e16e7b11728042f809f1ff853a01a8c2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/UKU932300268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca95958f5d8212f0e43e872d744d83ac786fcc2c05cd42719b5e4f7749f0563. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/UKU932300269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf7a1daf22917666d671939289e8883234601c3acb60b3442bc18b3ab2a8da1. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/GBRKQ2435532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08db7c5aaf5418a3d39b79a2fa4784675127b6f37e8723cf6a4200adb6707428. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBRKQ2435534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d96f2698cd26f681bf5a8b1514f7d8e215c080885c83228d50b6ec557e60df. 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/GBRKQ2435566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe072fc5e5d4c8087930c9765ad365b315135d1b51255d30f129eee609f013be0. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBRKQ2435572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3f13ef939207a88074345a3882c51c9f05ef697e82b3bb472de4cb64d82347. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBRKQ2435584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8fe5a1d80a7ed733e5e0801d4779d3a744bd9d6558ee4f679c3817638dd01e. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBRKQ2435587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db8aebe2a227aa328bf8e80599215929ee703d138efebb3790cf3bfb9716f12. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/US83Z2407301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db4427a290f5637c5bc125cb2477b9768ebb211467da662fab2e74e395513b5. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/US83Z2407302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ed196918e45ae6afc83f5bc0d67270f98422887e161eb816b819e6bb342c3e. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US83Z2407304.