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 0x6895d7a0e9d11863ec9e640a83f99a1d359c0898fa72e5c0aa72f63d41311067. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0ad0029-bdab-4a5f-998e-e5ff86e0d121.json and https://artists.proofprofile.net/proofs/artist/b0ad0029-bdab-4a5f-998e-e5ff86e0d121.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Madness: Project Nexus (Original Video Game Soundtrack)
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 0xb0eabf9f6f6fc6b0acdc8be5d6387ac13bc6515580175581e764d6e189e3deec. 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/QZFZ32057294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004d02035225a16eb902d5d75d4587f02d34a8d782667ccbfa2df8d14b055a9d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFZ32057296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498c280415a42c7e1477b3303ddcd922c642cf5ed39de2b031f6b84c1ce76d28. 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/QZFZ32057297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8732762fbccc140209af6805746f0d649be08eaf48c023fedd1d7ecfed71ba57. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZFZ32057300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a593e49d110aa1aab221817815c1eab28fa6be67f8489cc6b79225323e702e2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ32057301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f75081434f26afd5f2781e3434a500ff628154a141d46f9aaa6e4b1f1d59896. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:02:34Z), 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/QZFZ32057304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b4d4a5c82f67c499a78a1a5ed99c7703b9e33200452027094f1f9cb92db6b5. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:53:56Z), 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/GBSMU1979380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231c3d4ab4541fbfedc816173c3cded81f6975b37b11083efea8d658113e3b65. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZFZ32057305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7f464049a081111be14bac16535a98de56253419a559628f5e307c4074666e. 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/QZFZ32057306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f5f575e4115a70458a9cc8867668241a2c4b3f1e833a8418b1216270205718. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:36:09Z), 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/QZFZ32057307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c071c48fed6000225fb844dce01f68c8a16b2c5343d2e638dbf5281e1a87eb3. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZFZ32057308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dc4b4db88e27cd732d6dd90b81968cfa03dde779f4587613e83a4d8f32c6e9. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZFZ32057309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a96447c72ae0cd921c32809b910e0e756d05e9be4b4526c1b2862baff966aca. 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/QZFZ32057310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04c23c84abc7f5d4f09cbc6d9e152718fc647442247c5082be46c98ce48d162. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZFZ32057311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7bd18870eec508a8bd71a5ce0110fe7cb4371ef94e727b84892878ff0c5715. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZFZ32057312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ba689589ab26d08623ec506e05ea2a103add5fa209c9eff0b6c9d4b3610ba2. 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/QZFZ32057313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78bdc4610c74a5b04bb857a70fe49ca6df3aac22f339dd07c86c1a46b7e2fed9. 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/QZFZ32057314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bfc67f761db8b41279cdd58cd0a8ffb97099efb3b18be82de7bf753ec35ed1. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:25:23Z), 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/QZFZ32057315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf57e263c7ff44c732b9f929116262ad0157bc92ae89768b835979a623b71c1. 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/QZFZ32057317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa704bcf4e15be13783a57feb6fa4b26ac15909cc3fa20678ee5cfdaac28e917c. 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/QZFZ32057318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59636a2951a20dd4d64fbfa61dffe45d0241d68843082186d3cc5c468fc58801. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:46Z), 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/QZFZ32057319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e11e9e1aa4b3792c09d038b94ed912da42a0610e809e28b0a2a48c1aecc551. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZFZ32057321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edeffb499437441482644c84ee6e998d4f1f4f7428cf850646a465218a5781a. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:25:55Z), 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/QZFZ32057322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311aaf0e3d304ae740faa35659c829f6ffbf547ac3640f1014579cd0086d4f92. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFZ32057323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1f1295dd4fc8c3aa122cac597f2c9f800c29de74c48505ca5163e868be2877. 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/QZFZ32057324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdbba8c6c79a73f311d76f673f2d54b35819ede2e7835be373c7de01c8bf27b. 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/QZFZ32057325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0061d71b60dd7933689852e2b31c023da84ad5e9cce0b62bd506630db22c104. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWT2001456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb861240dcbd30ab28e43c1186f9972eae7be83bc52a63c49939d46c16b08ce80. 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/GB8KE2512587.