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 0x83f3a0129ec6ca1abb205a4957949eed8d1958e4c561624dcb8b475f43cacedf. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/441758e7-c023-4179-8e81-fe404a96d44b.json and https://artists.proofprofile.net/proofs/artist/441758e7-c023-4179-8e81-fe404a96d44b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pavel Khvaleev presents PARAFRAME & Loolacoma
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 0xe4af5de65a65a98c42b18374d4410175296aff491951b9604392fb2d295cdc21. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLE712400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82b067175730c28e762b74f002b3532bbfe53a1d600735c41076913b0e2427d. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/NLE712101042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc92fff3ea2f6b8f93ee2709dfe0a4b0191c910f8728892f9fb585567ec4b57. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/NLE712400596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba53823f6109e972956aea95dc15a12c6fddcd7a5b1c407c5b614f500947261f. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/NLE712400616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc92fff3ea2f6b8f93ee2709dfe0a4b0191c910f8728892f9fb585567ec4b57. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NLE712400596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e194c5bee90c7ba4f43b78d3ae3a903ebeae758b767221158afe361ef8a2d8. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/NLE712400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252054aa6b2c3b03c59eb43be5bda71d3804aa4fc34a6fd82b524ab66ad03338. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/NLE712400611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eedb76bb9a54d68f6ded61aa35d696e5efeb55cdd4fcfd109a64519639aa447. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLE712300370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe861df17e7282890750cf9203cf5bbbc1c255e159cf26bef0bccd5f77d19205b. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/NLE712300472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c0fb50d3bc2d83daa60b0bbecf41023800f32af7adefd3cbb66c6ecb09b2ca. Chain 2 (Bitcoin): anchored in block 957830 (2026-07-13T09:15:55Z), 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/NLE712400612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0f85f8c400beecac38400c6b719a27b3b381c74e02ca9949a5d320aea1f723. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/NLE712101049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4af5de65a65a98c42b18374d4410175296aff491951b9604392fb2d295cdc21. 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/NLE712400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82996c5e4c4b8e7017fc5b30f9590a40fd866423d2fb2a86e719f3b59586ae5e. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/NLE712500299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2bd4c0cd7d34f52f0dc275e513b73a98ace0836a09018dd772b668ad06dce3. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QM6P42599560.
FSOE 857 - Future Sound Of Egypt Episode 857
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbada9dee9265bf863d86a5d7387772860a091058dfb58da400c23e24c5d429. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKRMQ2400584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf522042aa0786775d887f8ce5a059d3bcf9d0dc3c65f83f6363b17cd4d928184. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/HUB922300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce99a1a2a75044e97fa76ea25ae7016864d183750303fe5467ea95cc45ead8cc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/HUB922300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc9eb26431305d0acda0d35aa7a49f7dbcd6d648a5d1dd15560443a690991c5. 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/NLE712100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435f2ffbcd2f9696eee341467cb8a21f88f78b128653385e9d0a3afc4f6fca6f. 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/NLE712100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179aa5acfb9126447ae68647da00c2f744f846106641425364f14ce1b49c87db. 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/CH3132217184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b6bc652809224dbe60c297bd48b7eae6246bfff19f1a116531f57cbb386ab7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CH3132217185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61c5cd8b03882c69aa41d30d39363ecbff9aa2d96ca3c782b7aadeee7159621. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLD682400736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bd582d14f7a34778e4bf99ca874a31da03ccb226d9733c154c99a031dcd335. 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/NLD682402270.
Markus Schulz - Sunrise Set 2024 (Emotional Dance Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9430a853dae026b2ba1dd50054277f90209ec1abeb611bee63be0a5399c56e85. 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/NLD682401903.
FSOE 879 - Future Sound Of Egypt Episode 879
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ebf2600f42be09d4f1dac2638e5821a1d588261b35ae80e9983e07c7c84c14. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKRMQ2401257.