Subsonic may refer to: Motion through a medium Any speed lower than the speed of sound within a sound-propagating medium Subsonic aircraft, a flying machine that flies at air speeds lower than the
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 0xaf963e0d4927220185d133fe4e2b2e6c097a061771b1f6f0707538830104d3dd. 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/dc484187-1975-481b-9c48-844de55ae5b9.json and https://artists.proofprofile.net/proofs/artist/dc484187-1975-481b-9c48-844de55ae5b9.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 0xa05d2ef1d1f1c866550016c303bb59d79605baaf93002c1a4542dba6020e6bae. 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/GBRD51900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959816bc364263bf11c7e38831f59a1bbafbf89cbf96dbf0aaa24319990a412d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:23:28Z), 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/FR96X1902418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a0c33b4b98ff2ad9e6f973b9d0c927496db16713e3ec38b81d5554b48978f1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBPWR2000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f117675ea88c58294234c23c13d0dbd6f8513744c69fdc524258414514d079. 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/FRX452158290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8000fd335294d4012018686de33fafb2138c37733340ac331cbb90861d740e0c. 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/GBPWR2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1023de326575d2bb4fb51867e0968393c6e8e9487ddfecc26702800be48b08b. 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/GB2LD2310048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6c6dd7abfa5cd0106ffe401d5219d6f644382e3a66e55d3bd45f824e1fef47. 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/GB2LD2410601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fc3dd8715ee21dc129041ae80e7111708c447b58bb0c8315a0e18cfaf3f4ce. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:31Z), 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/GB2LD2510368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdb6fac7e05188d66ac4478f5d2963802fad0067350bc9bdace09de07e3f354. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/RUA3R2394877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ad53cd05ee64c0d27affadefc4dc80b30ec79c9aa591bfcf0f4bd10ce44fd4. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/RUA3R2394878.
Deadbeats & Brownies - Drum & Bass Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913a83692b8f66bc1a2e36c20d3d62bfb0933b396597b148f8d0b2b17f1cbf17. 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/CAUM82300384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5358580f6cfb084146905f637aaac9d2a698eba4c175d7f3f9cc62890a8c3641. 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/AUCN32200280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10961ee609a672b68a3baf3b02b609a0877dc6e8fd01bb1b1fc6782c19d96667. 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/GBPWR2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa429ac1be1afffdbbd69797058ca8baf9382f2c604448ba1a40e5cea8bcab0aa. 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/GBLFP1928125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7a5a09f68ebd3ea632412014ccb81fec8cb844dd594ceee412c2900cf5ab92. 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/FR59R1978345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8712921a6ac8542edd4fbe443b3faab6a63886ba372d3414b6468176370254b6. 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/DED579504280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887b74383d2f80beed272de13e26114a5d0ecaa75f19acddca5d41d9f88d88bb. 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/GBPWR2100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b27a894b2f1043861df05cf1525accccc7569b3722b88833d48a7240a47d8b. 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/US38Y2433679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c86afc6b064d29a46d06c9d754d8b07460fc3c4ad8222e4b6a4e318148ab3b1. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBPWR2000059.
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