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 0x1c0e690fde4ad6d1ec1ad4d3284518044f21a509b02509f101fef0835ff5d9db. Chain 2 (Bitcoin): anchored in block 954031 (2026-06-17T01:43:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b6337fd-0d15-46c4-a06c-dda498c40373.json and https://artists.proofprofile.net/proofs/artist/3b6337fd-0d15-46c4-a06c-dda498c40373.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 0xaa5499a6087dc925368094ca62fd3d8411fcc1f54710365e05eacb3600352b4f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USSWQ2305303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e34ff0cc07cbfb90b945f94fa91c1b2c969ef1a468f4dad21c3654250b3e32e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USSWQ2305301.
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 0x24673646633f0cfafe87557fd802ccd70d275d8cf9b20538b236e4632e812225. 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/USSWQ2305302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45f01bfadef299aa6bf57062d0c6888b7fed8e58b0f32ad6c1e740f625891f5. 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/USSWQ2305304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78329d97000289d149a684ff42f3cc12fca325721b175053bce1a9a5fd842029. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USSWQ2305305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41846cb4aafaa5c3444d307e89dcb8a974ff894ef337a78b8f8b39571ab0374. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USSWQ2305309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b54ccffac9b8c203edeafb0501f697184efba97e55a7365c7f2c19005101a5. 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/US7MN1901600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2702370c85755d802c4e23327b9b1e6d25150a08c6535bdfcf002516a1631e. 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/US7MN1901601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481e913bbfc4142f05b4fefacc93895053bd412e321eef14d10f8af1ab59743e. 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/US7MN1901602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a627096bf548dc077780a9ef0424d2d31f8160373d02b03a180c7dd1e2d3a13. 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/US7MN1901603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7320d2e6327be10aa2e455fcade56d47103c1598fb81978492e737b9b5e63c20. 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/US7MN1901604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2596fd50b081107109a57de728be2a8fa59932c13fdd825b07cc4e7e94946d. 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/US7MN1901605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d554576ed567112a81ae8711afd29d582c2e9e384acde03513ab935def919d. 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/US7MN1901606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989f3202caa0d6709f31c51cb380cb660bf2a1c921720a450cf0dd13dcee3958. 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/US7MN1901607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13c5dcc4c179a7183744dfae614ac5332e847ce40ac6bc03b2686624aaf7087. 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/US7MN1901608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c04bcc87bdc736dd57a2ef0ecabb912c5d75a82a53a2382c97d1058f18b67f. 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/US7MN1901609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7027b0e90494f04844b2525123dffa9de8315f166d85bbe1cf2f40771aac2377. 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/US7MN1901610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0b1580e128a6107487d16a72f8e365a2c72330635244d4caf9a440a3cbaf33. 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/US7MN1901611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece25b043263ff4393ec13a92079ba4e089fd3ab5a617ba4f4976f366e64319b. 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/US7MN1901612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db6d7a12c1441be603e6aa933a8e99b19cdb6f88ba274146ed6b8d90cd878e4. 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/US7MN1901613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8614e2d883bdab6257683cb5b4740177e38d1949cc895135ef7698851c9ff7. 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/ISW212101201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976f7fb9d6b787041ca4ad03fbdd9b34f7be5f81e3072e1513f51513185a8f16. 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/ISW212101202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031187dcfb2e985df52778d2bbffb641435b9c02b455a1f4adbaeef6594ce7ac. 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/ISW212101204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa979a1e65c8b7745a6ffc76c1e608800d6817b60897da05a4912d7f2f1d741cd. 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/ISW212101206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bd59611e08367754fcaef94f686f91da4ed33f60913a4bd34e4bf6051f91bd. 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/ISW212101207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc96e01d0a0f9b3976d96514732133dc98e540043888bd2a5576dd5a757e9e1. 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/ISW212101203.
Music@Menlo Live '10: Maps and Legends, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740084d2dd27033adc20e82f6c740db06fcbd4a2524f9494ceb849c024a71df9. 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/QZEVS2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba05f43b701510a65acd0d3f60f0e170c1e046f85b1ef7d74e88369bf858710f. 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/QZEVS2100007.
Live in Isolation - EP (Music from the Film)
David Lang: Just (After Song of Songs) [Composer's Mix]
Just (After Song of Songs) [Composer's Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15be9c146136abf9bc8735ff6027023dd490879ce9519d5a4eb0a4fcb1ff15a. 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/US3Q51711301.