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 0x3790e9cefd62313f1965f2aa8324b9a182192d68a6f3f331b2aec56695cfbf60. 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/2a705fd8-0d16-4883-9e8c-a0d7bfe3431c.json and https://artists.proofprofile.net/proofs/artist/2a705fd8-0d16-4883-9e8c-a0d7bfe3431c.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 0xf1ab0c56a53add91c706261353b46c5281590c45ceba74c2f3d0110533482980. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/DEY470907374.
Chase - Maman Kusters Tres Cher Bien Aimé Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b738ff67049a0d93e301767c6687a18a1b0ce9f41c7313f38d3be81b95a4f6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEY470907378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a8d147ac5a2ca3c9b222258be43cad7c8a778f5c5e924cb1e5e1f96ffe7123. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEY470907379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875d21e3e1d14412a4bae27fee972b53e09ffb16734808f48aa873a21d333748. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEY470907381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc60deb20d6ef5b1e02b8b1b46c7873907c2e0b4490048ccec1e70e55ccd968. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:32:25Z), 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/DEY470907383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca72eaef6c1ab59fa44294e19b76bb90070206cd228a7ad855a283fc9b75542. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR9W11318210.
Le Réserviste (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04340a8ba64d3b59023a7fdd87b8a5d58e9281db2fdc43ae756199a664ca69da. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR9W11725720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2583d6004d992e73a75fc6efe8a4900c60ce028c5d5cf1411229da509c0ba822. 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/FR9W12010613.
RUN : The world in-between (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb91b7df0138bdcc66a3c79c5b42b6bd380217f10e57f286edf544a2ba888270. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:08:59Z), 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/TCAGC2262500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5505ce32b75e40f9822199afdc75bec92baa57e0b139623921cd1a41f0bf13. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FR9W12239012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba65e8089aef2bf3dda9aa960b60607fc9fd712529b9af5c850ed1daf2b21d7b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEY470907373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe60146fd09cb6ef20ac242b7a2af0220cd795db2821a0e29762cec0ca538e1. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/FR9W11424942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99b89984f3691a264ef1678e1512477d9b3f3ccb297a520e4e10f7e34860912. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:30:55Z), 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/FR9W12325856.
The Quiet Earth (10th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf495f2376c77bb36228a791c99104f40d4c4594d5ebbfd62bf3d1e285162e32. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR9W11727007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a00525e93d5850752d1e99655eb3fd360834dd38b3425394a37b08a603ac268. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR9W12320859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3872cd0db3677986746135ee642842add018dbd19fcfe5a77d8a551c56c2363. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FR9W12320861.
Seatrekking (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d6f5ce0123b7eafca7987271a8a96fd0ca85024fd66eaf2a365142779b472a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR9W12445106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a502956c484f9d9cf5c1f49870ef3c65aa109492867f31ca3ac44415373441. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR9W12445100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1974898ec7d09d84906523f4896f39db555df2f3fa815eb5d92dde64bed2d1e. 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/FR9W12445099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9d93d541936a537e70fee319ed48ae8fae2eaeb343fc9331686904005271e0. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/FR9W12445098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d76f73eeb113826e0556db46d68746eec87dccd46a9c8333c382dfbf9a5a51e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR9W12536870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023eea27d871777f262fd7dfe8968f831f3733dd69055aca449e112db8a31b45. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FR9W12536871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f450f7afcf438b2332bb221ece8e43083492941f62ef013e54e5df8253bdad2. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FR9W12536872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bb9a213c8fb72df08a160bfa7adfc2d3946ba935dc43faf5c20d778cfccb49. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/FR9W12536873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d8f15ae7719c1a3b117dd62fccff9e9c653cc6b1c0f959921687a437e59c1a. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FR9W12536874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f620189c7d8fff177df940ab5fd3724dae250e7beeaf2a5c5b0e249d69fdd1e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR6V80285721.