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 0x67ca3dc46e99d8c4e3887010596aaeed4f66e84cbb65f937c1c64f8cd9e42bdd. 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/6f0be116-357c-49c2-b28d-98e15dfc6ba9.json and https://artists.proofprofile.net/proofs/artist/6f0be116-357c-49c2-b28d-98e15dfc6ba9.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 0x6174508795a86d05d7900ba9ac4b13a1a030a46028086bb712787ae9bb1adf18. 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/USRZR0389402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2ea33db1340fdda24b9b9e6a9c8f82bc9e3815ecbb6e519fd7efe7d9ad196e. 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/USRZR0389407.
Dr. Aneub Abrey's Island Blues Cures: Pt. I - Intro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd446a047ed4b2d1dcb39a24ae4c9c2cb9bfbc8171ec124d6cff81f946a2f70f5. 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/USRZR0594201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a31ac13039f9fa3cc4ca584c62dfac6c2c6d3dfa5b0072c044460ec912d877c. 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/USRZR0594202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba65bd2717ff086241048c923a0adaa4d3297fd3e6d5a5a05839e1b76adea46. 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/USRZR0594204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d9ba57ef909451ce697e1c4db1aaaf718d2f93aac0a3eec44ce833fd38737f. 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/USRZR0594205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4d214127f2ef64fac9f38cc88d8b2258be1b5597b47fdbee3cf2e79e287b6a. 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/USRZR0594206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651ada530a5da51b90e41832c9ccf547b134266f135fa5082213009a73876f95. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USRZR0594207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5371b86a5f38069e969a5cbc4f5f81930c3962f53a729de68d65a50b7d8692. 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/USRZR0594208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedac3dc19c05adb0089fb78040155b1338457d62dca9159e0cd680223d6348d4. 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/USRZR0594210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155487e9db19022368f2111a921857040d99b89e89b975e45b33f3b2f7eaa57f. 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/USRZR0594211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca76b5038def1a319dfa4a5ea4eff0a17bfc6db42cbdea5dbc05a322ead765e3. 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/USRZR0594213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887ac49b7b6db045ea9f298cb4511f2611bd741cc03e491e6faa13fbbc88651d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBDCC0000672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adadacd4063565ff9ca5a5eea3f03f4b5242381817b57b4b41d735043dac900. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/ESA012188567.
Far Cry 6: The Music of Yara (From the Far Cry 6 Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106b70c8f4a663aca43b7847443520550232bf5f56fbfcffc6ac1b79567914cf. 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/USRZR0389401.
The Man with the Hat and the Tan (ManHatTan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56c574f37937758b8b0ddf9a26845f41dede6cdc8539d611667311449735ab2. 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/USLZJ2258537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecb098126da88e96a2604beaa1075e5a00054691f31ce11f4158f6f3901c61c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZH5R2000262.
Manteca 2.0 (An homage to Chano Pozo, Dizzy Gillespie & Cayo Hueso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3c69b81e457f2411bf6d231800b8290c3a7ff3a4b65c8218f6b1cc7f2c5fd7. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZTV32384359.
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 0xca8359e147a54264434df0f66bc68e59fbf2416600966b8c45c9cc5441334b19. 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/QZH5R2000273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3137f8961a862d4b1c3c2a84eb4fe5123e26347eb1139930e0904767370fcd58. 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/QZH5R2000285.