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 0x3b186e827e47325c1ef6db74b823255add1ecafc6cb5cdf635de07854e4187dd. 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/88d2b44a-27fe-45db-8355-7fce4ba737c4.json and https://artists.proofprofile.net/proofs/artist/88d2b44a-27fe-45db-8355-7fce4ba737c4.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 0x41b143c615b3eae34cade4cc7aeb6be5b3656a0189c259353f02c89b4dae529e. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/FR6V82184217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6079b64a09e5253064a5ef1ce0d6e2fd8746015bb8200cd28a7291faf4544e54. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR6V82184219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73eb031ca2f3b256bd3018342fc548e981221d200e2ce0f29be3be07461bad3b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR6V82184220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a48bdfdc8bf01e750d6026eb586c7e39fb77c61625517c5b7d5b213e876c0e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR6V82184221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a62608af0e0d406931a94e350c3902c9d9913754c29cf5876ab4b715abc2c4f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/FR6V82184223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9ce613ddf49541c7a62516265263d087749edf5b6cb1e64ef06829e7c23d1b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR6V82184224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a5ae860821e0d034b8f1ca8398ace33546197a163dd5da773e119d2e8a6386. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/FR6V82184225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96ef5f0ffbba6a40c727681312e77cc0e0bcf89899d12274c8409b4353b7bb9. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/FR6V82184226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570251b8fd7c19af4850f6a8307f37e31e835364dc967141bcc93af8966f4c44. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/FR6V82184228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290cceeecfcc213fc9e9ed2e970f57e662642990b71140c15da4348ede67d67c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QM6MZ1831083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60dcc2f91eea652365fa279579eecda3d62c41ab3f4fce0b36ca27c3679e8ce. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:25:20Z), 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/QM6MZ1831084.
Avorion - Music for the Stars (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1a01fac7c46fa80b50c4df687b7d339b3edb259bd50bc3face6c42542fe362. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM4TX2024512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57701a7f97fdd08827617509be622aa024ace3f6e0bb00625eeecdfe745f7a65. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM4TX2024514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad9cdce1d7b4b652486b50086b5c5ecf25b4d9fee98cb4ed88bd71b176a43f5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM4TX2024517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63030c4bde99db890d239224f9f95c2f6af79fd1a88ae9629f68d87ea36dd27. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM4TX2024520.
Body, We Die in Peace (Jay Chakravorty Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3344cd00880996bd8dcd8ab622ee6d230dfcd02c7e1e81ed254b93b90e8ac2bc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMFME2127950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a715b561dcff7c41f200e3a43be88683052bacd1a03d21e502ee62c9fdd908. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZTLA2374177.
Breeze (Vargkvint & Jakob Lindhagen Rework)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2f3a0f1d7f2dbfaf8ae7200a781e828233871d730201b34923d23db36f613b. 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/DEG932200542.
Opera - Dobrawa Czocher & Hannes Kretzer Collaborative Rework
Opera (Dobrawa Czocher & Hannes Kretzer Collaborative Rework)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a5d50d38b9593a4c5d1db1f05707af123661e4fa5d3c6799bb34db4119c2b4. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEG932101944.
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