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 0x3e76e9a1aa5d86c9a9caf23d3344a05cdd3866709cb2409cfb1e8a06f78ce33c. 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/6b3cca23-ecc3-46dc-95c9-bb1ce194ca6d.json and https://artists.proofprofile.net/proofs/artist/6b3cca23-ecc3-46dc-95c9-bb1ce194ca6d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Opus: The Day We Found Earth (Original Soundtrack)
OPUS: Rocket of Whispers (Original Soundtrack)
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 0x491dbbd3d689d0d33dc9cb86ef8c2bc340da5ac72149dcc2868992c00014d199. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/TWDM71700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b379063e1e6d04c0083f155e74129b64128d28c6c3366506fa74b76b904bca. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/TWDM71700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b01c7024acfb68355ffe7553d0bfa07ab581b0b0157ee8f79e8926ec7d1a6ae. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TWDM71700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c6da92c23128e19d6654aff52db410958af42920de70cc94b49a7bb7b42785. 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/TWDM71700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99abd285e7e948a0ad8e661bb6bc2a82e2b7ce6c76f4c29ff98d793ad45a2bac. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TWDM71700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a663245f11b1caafc03ac9382736f0733317afddbb0fa726a6ae6332ff09a55. 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/TWDM71700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa17735f78500b4ca31adb5adb9f172fef2fbaf2ba82ffd99d3225aaa2f83cb. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZFZ52044506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc288b5d83c0179b545a051e10aa275ba22cdcc5bece9e40598f822368659eea8. 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/QZFZ52044518.
OPUS: Echo of Starsong Original Soundtrack -Best Selection-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c24c5823880debe62e21417a447135cc9e12cd0a3b946928d8f78b249a494c7. 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/TWAE32302485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d42c32cf61b4adf777b5c4ea4c57a65c9a3e540ea7d9b033c1ca412f882b05a. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TWAE32302486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa727f3aadaaec4247a280aa24a93171db6bdf43ca71d35a40149d917eb16a683. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TWAE32302488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb14cf4c5ab63f00b025a8f4c5f0e4d6a5808751d7d9ac3c986644e087ae848f. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/TWAE32302497.
If It's With You, Then I Would Love To See It
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba17dc417fa2bcb4c9d56d801d6831d2245f9e151645207c0e094f5048c8122. 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/TWAE32302498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3166a0e67e7b86ff3c632e22c3c605711de7d1d2c6b2f5a7efc503e3fd1d8506. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TWAE32302499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542de2cee78b35a6bb5f5d96c3fb85f26a1c83cdfe978090c195e3be25c79433. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TWAE32302504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdee0f0e36a6ae23ecf90a3c9d09d39f46fc1586c658f3d821a04a887afce68. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/TWAE32302510.
The Flowers There… Are Always in Full Bloom (feat.Eda)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a2720289d4d186261368035fd64d29204336abd810e8ac2a58381bbf5ffe54. 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/TWAE32302515.