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 0x8996aa067eea53605eadb10369dcaf25a0486c75f3bab113370790a2c7a7f19b. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f371a3ed-011a-4d78-838d-dceb962471be.json and https://artists.proofprofile.net/proofs/artist/f371a3ed-011a-4d78-838d-dceb962471be.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 0x11a98d2f1b8088e3394e5d03283735ef92973ba52889a0e9197af45704ea45e4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBKQU2088791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42caecd0c41e59c11a3f749aba36526e0cb025bc716b7eea9d25c05942462bab. 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/GX5MX2346813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5ffaf98b7ec99a78dcbe0b31105a9b1bee162ad911dd5d8debafcd2a216e34. 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/GBLV62109875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c3e6a8ef5c08b28d119e71f554168fed4c377da3c30f75ee65f3524ebfcb02. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:41:35Z), 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/GBKQU2353218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bc9297ec983bd1ebd727c425215a43f3cb48b9e9d64a8a5a06297c6651445c. 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/GBLV62214173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ef68aca9d3ba63b156aaf227160137dc9f8536f35d7b05134326f4f3e1b659. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:59:14Z), 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/GBKQU2333870.
Fallen To Pieces - Invaders Of Nine Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eba845be3638acaf623243e8278f734bf5d34f38deee04339b1241ec7072581. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:08:32Z), 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/GBKQU2362903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab271519209f693648966f1ca8411cd9e6250988cf667e6971da00364e9dda6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBLV62021751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdebaab786edc007339faa87e52fe0cd27e588d28e95c444594a9d727285090. 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/GBKQU2411767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6acfef3170064ef667c9cd08522655576f259c5eeafeeb98e587d85b8a278b. 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/GBKQU2461002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8096286c72b9c89ebe6f4589b8730f42759470688c3d016350b6d3cb5516b762. 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/GBKQU2421383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd357ee3d6ad92a268d728f4a27a333285c59fef97c2a8149c3d9893a5c58897d. 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/GBKQU2484779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08e0e28b7c44870192c8499f666216703f8987d6a6760b3d676b8054951f624. 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/GBLV62401414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe497688f1161495bce069a5a86b6c840223383390c804b52585d88fc683493. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBKQU2413725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566db340691a372f13435f53bd9871825758141d1834ba3f1087709d7b6ce76c. 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/GBKQU2435670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827a059c88b7a6a3605b31d47beb9a7abbf925ea907f31d36a226e2c42628b9b. 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/GBKQU2472924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e89b8ca5b0999e62d17356cfdeee10d9e73a7a68cf7d12f36a74261001b581. 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/GBKQU2455755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcba8f70ef3439a9f16bccbd87d712fa8b002c0b526342eb7cfdb90526ed1a3a. 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/GBLV62407996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595a6cdd679ffad9f585c5706c9401c2571f568e2f4047c33c3709eca86f61e6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBKQU2497446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54c2ce06683e05679d61f0d0a689a05cb11f319ef7b2bece4384e50a168607c. 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/GBKQU2487307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a9028918d5877888620b4abe548308968d46a72b4e6d95868c6a516431ee76. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/GBKQU2492515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1221d0edc6f1026222f60ebe3200e397fd73083b98a6533aec03ca3cee8d0af. 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/GBLV62411306.