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 0x450986ddc2008dd922a624d1363d4f90a0fa3fd0e2a6a4d1b48394ed0d5f86da. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f89ccd7e-48c4-482b-aeb2-8bdb9a959e17.json and https://artists.proofprofile.net/proofs/artist/f89ccd7e-48c4-482b-aeb2-8bdb9a959e17.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 0xdec3e0cf9db25283f428ed9c303a5f7f1617b3528eee8de8a86e103a1cd62212. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FRX201825837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bc8e54122156596691e1d56c9f09b622e722c7eafd8b86632837cdf6a2b45a. 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/FRX201825841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c702f5474f7e2f8f4fcbbde42379263f3105683bbc002ab118b76f6b16d658. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FR2X41669524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d9425ebfe1b7c1ce8ad7e57402c9b9738987e4529337c2221c2f0ff4fc347b. 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/FR2X41669525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f84bb4435005ff93fc0135fb5f6b79a63ca25a596883a21b05f24bb49cd704a. 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/FR2X41669526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667ec62164c9bdf6060b1a479fe0c733715b52ced9b4191819cef1535278f3ac. 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/FR2X41669527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24180c102ecc89b37a922073c4ca2c1f7c21330e934ff457605057e900200e52. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FR2X41669531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47c19a2900ef7df8a69eef3b3ad383ddadaa8a2172010d37ed50fc8638227fe. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FR2X41669533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100412438e53360bd70060a660baf38195ace26dac8f76f2fa7dccec28501d48. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FR59R1607776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96afb27d4a5b3895b387e67e54445b466788918cb87ecf009b2b9a454c61293. 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/FR2X41673662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ceed9f6b1cadee9c9c74d8d9176e2287dcda51edcf282c45558ef070f6fad5. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZZEB2390329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b25c77eab1a3c82310507ffe25097afd5674a378bda148b4ca881bdac06305b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FR2X41955083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefacc63c4bbc7b864faadcb214b40d8cac8c4b8ad546f8bd790888e0e4ed4eb. 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/DGA072102634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1421c18b4201e625565ab50ca3350da9504f24939bf233d96d2375aef3497b39. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DGA072102635.
Run and Go Hide - Roots Zombie & Gary Clunk Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f5616fb555629b5c8e98f796babdfa60822b44a6e00699445fc06310053b09. 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/DGA072102636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bfa980b53968f34a72f854f29ec687d7c2be45966869fa690a4371f3ffdc4d. 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/DGA072102637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2662356ead35597d3073704270001ce10a8b668bb6db68745ce58c62cff57bb. 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/DGA072102638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243c2370c2171d168242b89bfc9e6998ef27f70e333395cd28a0368e0ad318df. 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/DGA072102639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e65f947874b341d65c888f34c84192acc69145b9534eb533245244898a62dfa. 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/DGA072102641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cc0cbbff6ce0437a3a3ab259b16aef754023b1807077aae726e84e39809db4. 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/DGA072102642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2d3866ef5c1eb454ccdb00927fdcd899f76dcc6d2b17ee280c9451469b5ad2. 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/DGA072102643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75269fdc79a277546aed05fd8accb7953cd463a74a9eceb7fced663ccc4b38a. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FR59R1805421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f37cbc84a94691e5188829db933f6da5a5f9df9e4cc96ad839cce5268dc9f0. 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/FR59R1805426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64602636772b73c9a887ed9a9ed3ef486cf208c9d3ec2e917ebb77d3a17a9976. 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/FR9W12347128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36e105cb702d6977ca30b4e591597d987f5df16c832476701b634ade5424158. 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/FR9W12347129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9705abd87d90d105e64181ccc5d9d4ac4d1f55867fe02f1a99e48e07a6a04a9. 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/FR9W12347132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7bfdfe497c7f62eb3d2154cd975ab00de55df054af8ad71dbfad92ec630cd9. 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/FR9W12347138.