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 0xc95c0010ef2a8e25e1a08d8a27f4d0e153f0961c1bd6ca4acf4a56c91c897b42. 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/f90a7b37-20a0-42a6-aa9e-bd5e85ec2dc9.json and https://artists.proofprofile.net/proofs/artist/f90a7b37-20a0-42a6-aa9e-bd5e85ec2dc9.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 0x33b164562a1aae04cdcb082aa6036ab5dfe6a1ba7c4e186aae3cb950639e422b. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/NOHLX1876010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd8d31ad77d37050c94b513261237515e86e7c38807484901e14fddfe4869a2. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/NOHLX1876030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95b28f22d0ac982602056ba3943581b7a378e511c18971ffe98efa3c8e12f95. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NOHLX1988010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b8190c8703b387e53fba25190415bc5f26732c39d852d51901a967375c2399. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NOHLX1988040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dc10cf4736d19abb9a8ad61bcd17f9c052e88a790bbb5fd7672a6ee35f97eb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NOHLX2344010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f613003e05fb2c96d6c28b90e4916d64241ddd35db28459bb0f1b366bc2f7a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NOHLX2344020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b67a22a4efdd951be59e4931d6478afa7d5f95e1d850f88dacda90e78c5a828. 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/NOHLX2344030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055d7d94f87651aca2fd4ba9cad0c4d93be9646c3c5f0793f5ff6dac3bd01f32. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NOHLX2344040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fc02f8d60e65dcc6d45739b60a03a3552628dd984ede6252f2ecba47b5822c. 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/NOHLX2344050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fc02f8d60e65dcc6d45739b60a03a3552628dd984ede6252f2ecba47b5822c. 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/NOHLX2344050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda057a5a33e91220d5df2bdd493e7cf22bccd9c6d1d280ee9eaf006307df4db6. 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/NOHLX2344080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dc10cf4736d19abb9a8ad61bcd17f9c052e88a790bbb5fd7672a6ee35f97eb. 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/NOHLX2344010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ca0f4d79198de9e6479bc17881c86c83a29d07797659a6c3cb2331b76dc9f6. 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/NOHLX2344130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f613003e05fb2c96d6c28b90e4916d64241ddd35db28459bb0f1b366bc2f7a. 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/NOHLX2344020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b67a22a4efdd951be59e4931d6478afa7d5f95e1d850f88dacda90e78c5a828. 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/NOHLX2344030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e13bcea700b538adcb6353db0db47438ca31bc4c25cd1d839e5a421c8dedd8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NOHLX2344070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055d7d94f87651aca2fd4ba9cad0c4d93be9646c3c5f0793f5ff6dac3bd01f32. 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/NOHLX2344040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26021857d20168d5757f5eb206f45e7261547d938f0c4a20898453b6995ce462. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/NOHLX2344090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb960ecba3c96916d221bce83cc009953bce265fcbccb3b86b8ce360f717a0d88. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/NOHLX2344100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc4f53a7e7b02a08dc9d50a1c004a170413e15b2199484e77be1471c6383b92. 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/NOHLX2344110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615034567dd98516fa37d42676197cdc1636ecf9989815905d0ee6b31caa8d06. 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/NOHLX2344120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7484a2b6f07b0146e6d8308211676376fe91b0b3f52bf8a710f732a34fe8a0. 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/NOHLX2344060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997d3a56155a3e0b8b3667ca2ff8d04701a2f6aae58f1abbc2ca1e7933eed810. 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/NOHLX1985010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa154d104d6501fe8ad7f7432e933463b2a3e6cd1c3439d9b8798f644b4d0f78d. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/NO3671801020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bef4e6dfa05a3a2dfaebb8fed936bd0df899b8254081ec6809a08176b16c84. 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/NOHLX2096090.
Graveyard Shifts (feat. Larsiveli & L.U:N.A)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665f2d206a0e6f79ea67f00f664e08ab0c39048df07589df4ff672f5b440a664. 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/NOAJR2200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665f2d206a0e6f79ea67f00f664e08ab0c39048df07589df4ff672f5b440a664. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NOAJR2200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117ae257a380c1ea4b6b0d5c5ef2629efd61a30c1a8fcd78f29121226a09cb94. 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/NOXPR2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0185c5f470388f60d703d21fbad9219affa39c7e579aebf3dbe1873e3d1f3e5d. 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/NOWAT2201100.