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 0xfa2db93e238ae55aa8388aca801da2cdaef1611f413847537e64d1e1e9fdc988. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b5706df-1e7c-4840-8393-c22f381acd9c.json and https://artists.proofprofile.net/proofs/artist/7b5706df-1e7c-4840-8393-c22f381acd9c.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 0x50b32442552c9492357b0de43c16b323d08e54a3035a613d8d879d22abeebb01. 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/GBLV61611956.
Music Is Taking Control - Oscar Velazquez & J Warren Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055219e16ed441cd9d8537b32676524034e311ca22e63e1a23b9b9b92fb8d29b. 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/DEH741704054.
Barcelona to Mykonos (The Circuit Music Guide 2024)
QHM Exclusive Unreleased Instrumentals, Vol. 11
Here Comes the Rain Again - Chris Brogan Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39891087529487a31962f9232af87c46eecc53ad51f90ff1a9e5cfa1fd375148. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/DEH741700636.
Here Comes the Rain Again - J Warren Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108d9afffe4976f0d557c721d428e8db27017013cdcebe27b9831282bfbd0dcf. 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/DEH741700640.
Here Comes the Rain Again - Fabio Slupie Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5827acf879a4dc9c624657fb03ed87ff2bccd40d2fdaf418915fba035802087. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/DEH741700635.
Here Comes the Rain Again - Jonnas Roy Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a39acea036e07ee478db50b4a05698c1d1343ce959aa733b84d474836ac162. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEH741700637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fc3f2b2185f7feb183c4a3eff0fc67bdd64004b1ee3374b26ba7598c4920e5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEH742439077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d892db15d2b359b8ea3ef308387cc4a39526fd3dd33a3f936cfc7ee109c9d11. 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/DEH742439078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edcae02691fc95b7196a5e76391b86feacf128a2c31724877fd3166e4ee8d5b. 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/DEH742439079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18912cccb029979656ed38187ea872d787cf9c22355535003f4cce24543f74fd. 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/DEH742439080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bd66e5369ff6945f70e502916c92ca283d107899a5b203d2dc4c61046ac42f. 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/DEH742439081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf465180e2ebb0d951c3304def49ef79c7e292af50dee2dfbc244a3f9db505b79. 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/DEH742439082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5f29de7765f3b04b1f82f172604d75df337620c4d3e586596d61bfec2ec8e7. 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/DEH742439083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb9abbef33b9bc561a808633f3f2f9510bb3dda1ec828c654383009bd5b4378. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEH742417968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3d171c12351417cd440b6ebd6fe2a08fe0e69635c2935cafd09ec1cd17618d. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/BCML12400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa11d2a9f336f8e027c4f83cfc08c8785a593c468ebf5d6589c7eb3ed4839c9d. 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/DEH742423272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3992570a4d62f80029c7c19699cc0bf2d977c5669efdd5898f7adc42bd1f732. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/DEH742422276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c29ffaed9466a6f399162f5501cf7904381a52aa4992158cdc96c2f0b4c7ce. 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/DEH742437293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509486a330f88b4029687570e4946996bff56e096cd085e30fbfe918e26fdf1d. 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/DEH742440587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39338f6c72d60229ccbd5f7143ad0122568c45534e8b1d0ae78157b67671399d. 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/DEH742506522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5e3da79ff145cc91a8b791ad3498a3919234bb65aa1d67c860a548ff11c820. 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/DEH742507016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a2d317a6214e1f184e51dbac61b0b9d825c5609e3404032368791a18ad2eb7. 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/DEH742506745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc93ec4219ac4da98ed0ae4c01a0e7e4002970538446505933c9e7ef0204130. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TCACU1672518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a1697d8cad9d03db946fc76a469cdd46f126e742f261d00e90d1ef1b9c866c. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/TCACU1672521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9205872abd15b825b69eeba76923f7ed550935d4810d1ffb4a8daa80302f50e1. 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/TCACU1672526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524654a374ea430e5b6706aefce8e0bb57e622b0f5d55ef6fe937564c17c25b4. 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/TCACU1672531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03379fedb6e390429a7b573dd11a81e777ff579be5cc045792a3537173a5b43. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/TCACU1672533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7c5ba8afba918d5a7adf8fbeb2f48aab4d6e6f878adbc4b57fb293a87a9864. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/TCACU1672538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbb71e164da65131fa92e3514208e8e1e631b77aba36c4dfc2cb0f0457a0855. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TCACU1672544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32416b6b6596539204c532d4e05b4dee4b55edd332306e8374230d5118196eb6. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/TCACU1672546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77330f28fd0f8dba8ede48ab9790b348ce7bf7d184d46860642790bb9b6b136. 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/TCACU1672547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6d9022faf3390c32322eed17359b558fa0d51c4449116911b7f9ef618e67d6. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/TCACU1672549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76ee18b6e004ba4c2a76265db052d493d89a120bb4078b31328404b85ad21dd. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCACU1672553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435d077271650e3190fff33cc8b9f52b24224875dc1c079d7d3d3658c722d4dd. 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/TCACU1672557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035451ca6eb373c8fb26e9f54a78d9ad4afa031a78390ebe977ce926fd164e45. 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/TCACU1672559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6db5965e5ea71d4baafb4d1f398e6d6333f2a659038eb23540f2abcb41e97e. 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/TCACU1672565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a3a722b65b8a6f8611bf82911397687f3891643068ea88bb8d934539789a78. 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/TCACU1672572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a71a60a129aee45f7652cd16a2318a0e175652a6a465abc5f15d485730357e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TCACU1672576.