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 0x832c5997a814a0fe74e6fac7b7b207003d06f105bdd4f2defb1c22b6ad03a185. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e14fd24-0a0b-468d-b4b0-5143db8c5ec9.json and https://artists.proofprofile.net/proofs/artist/4e14fd24-0a0b-468d-b4b0-5143db8c5ec9.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 0xee911f2f5a658b84098f3a12c641896d56d5186545e3431f579610a692edc7d2. 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/USSK32142814.
On the Town: I Get Carried Away / You've Got That Look (That Leaves Me Weak)
Maestro: Music by Leonard Bernstein (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c65d10f5929790dfd9e400da3309b53cdeddc4b98d4c044c464154369471ae5. 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/QZ8BZ2307131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f930f84cb7e335b3b5d06a5a23947dc89ff9d45be2d8239c8d7955b0d952db. 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/QMQYB2123202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b9460f84c3a4678f7b0a0781362deaf47aded3e18e7eedad0fb2d906ca4067. 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/QMQYB2123207.
Company of SpongeBob SquarePants, The New Musical
SpongeBob SquarePants, The New Musical (Original Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0f5401980b71d92a20ee35d2e7fc1839685bc90577f3f892498607445e16b6. 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/USQX91602685.
I Was Born This Morning (The Cicada Song)
Things To Ruin: The Songs Of Joe Iconis (Original Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ac86b1f54e64c16374c66bdb7667b3f875395571ee1b4274a3085dd0bf78ec. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USSK31052801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe655f0a10c49620038f4b5d227b3ffbfa810f51dd4d0efd8d33a38eb813e1a5. 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/USSK31052810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf422f7e5eb5ee02608570682740e70b0dcf004106426457ba773431b026bd0. 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/USSK31052817.
I Could Use a Drink: The Songs of Drew Gasparini
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2934b19eff13e0fa5b36248a8329eea8d576f3521fd19053e4954ee2d331ab28. 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/QMQYB1301009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d54edd8076dfc2ead710b7e48c8b4ac91acec258a3b0df75490416303cd19fa. 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/USSK32142826.
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 0x1cbfae28d8f583209615567cc9114f28e771bf9587f12ea5e4a272357dc7d81d. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QMQYB2123203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ffe171ee437eca91369ca32fb03330e41c95297cf0242e5547696fccf053a7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QMQYB2123204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd812ac94579344b5a7dd65eb8b3a10ca5b6a92a5bd19c435a137a56713190ff. 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/QMQYB2123205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1839b6f84427d4c08294e7972b9d227f0d1145f8601ba35c2eb088cc6d121a41. 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/QMQYB2123210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0196101a0a76495c1bf752c5fd382b3d020b2c2c1fd03a4a832316fb8625c09. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QMQYB2123213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c77334d7c11e5e2749b7cb232a8bbf5cab64379e1e27ca9328f028e400925d. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/USSK31052806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975d749f69ee98aa274d27988b42b71494e7b346505cecfbcd395397de32338f. 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/USSK31052816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57815040f6871759ffc25e28e04071c07bb7fb31bab3e75c553f4ae400217863. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USSK31052819.