1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xddb6074e57e40a0b5e1b3f6af8d078218fa50ed476bd15f930bbd9a55ac982a3. 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/7bc44d22-2b48-472f-8150-705336217326.json and https://artists.proofprofile.net/proofs/artist/7bc44d22-2b48-472f-8150-705336217326.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 → block OTSBitcoinBlock must exist at that height 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 0xa4bd1cd64d29db2a34415661d3c0f99e1191a718335ede80a65026220cdc4d74. 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/FR10S2560738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009fc792204438d8dd6013563c6264e64c1d0823dad196a796b7afaa10f37fd5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NL8RL2502446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf28af570f494c77a9c3bbd5fd4184c9d20a21cdd4ab63f2900ca5dc2a6ed6fd. 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/TCAIB2448091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f162633836fbd1217790460621b9fcb7d2fd106f82cbc67444f2cd7a9ff7f5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZYFZ2349027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c120f6f202bf046710a1e01aa594e40ba1f01a78c56c9cc3a67268eb050399d. 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/QZNJZ2329819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b37480473564e44a046fc842fbfb0210da4f9c4fa6d482e4f60197408222dd. 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/QZMEP2321151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cab31d6e11c500c03bc7f53c3202303c63587e1b4e9e2b4832a4e29e7e07a45. 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/QZWDW2337570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e996d28653218c6c4569181136adaf5506efcd7400b8f57b8b569af37757b8. 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/QZWDW2309090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafc2f7abccfa320acb381429a82101cdb04d05fe67605921917138811725976. 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/QZDA72331803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1f36403f4130025c8cab3ace135e28a7ac1ff1785c96e480141efad775c9fc. 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/GX3Q92329619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1018f8e03b8861da3d063efc885728fe79307df3c7cb2a4f94dacfcbb9a173d. 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/GBLFP2427923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dc55fbad3945ffa48149dd06d779f5f473e51fb19061b9fb5cd182cdc21752. 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/US7VG2312068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dd9e37851067a5268910da9158442d425612a6037b3c5025024045e257f600. 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/QZTB42239530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad498663788b4856608c6b21c94db2a0a0984d7f73c6a584bc646c59bc9304f3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMEP2280924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3144e869ebd40d140e9380e27f219da750a928ef9f3bc9bf29932be7ef55b7. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZK6K2288755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6130246582b5127cf35f992b63a79ec89a5f2b3891e0c7c01ed997074af93051. 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/QZFYX2281914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f36f930f2a7400ff6619a0b5392a803c921c756496071e04919fdfb43dedab. 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/QZNWY2195436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5d0e390ab32b3ee30904b34b908a9f241facb36b90c7b60407f646a1d33f9b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMEN2148050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43376af9d6ff813b417a2d3a7911e860063911368ef75e7dc24c164f4b2a3b7. 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/QZMEN2148051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5792625c04ad12384064da394536cffb2651f8051ae0fc6452a1e22db8bc5f02. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMEN2148052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84a2af4af6e92d4649a6d3571f89a6593f00f0bc95a49e2856a001cf4d3f292. 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/QZMEN2148053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30a0180802ab62c4d75e2704a150030f6487cf164ae8a2339fc084976e4e8fd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMEN2148054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599f9c16e4fdb87d5a20ac83ed5eea355017d5eb1396da15d0b77450c83c4ff3. 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/QZNJX2402001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9a156be5f34921d83650a66ad2bd62873a0fa6522f37e696d60861b24fe314. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZW9L2242933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701d5e0c2926c0a8f84e971b66506d6d36cd501871b021e8c11ad68e845355fc. 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/QZNJV2326527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6936766345a290653c11979ef97949dec9ca7e31912bc498cc54e6f14cf47fe9. 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/QZN882503633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55e57147c01df402e6443af8afecb636d450c52741846d4e68ae5c9100c5c99. 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/QZW9M2233822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96697e348f865ed952a95f78c48f98b58d5c780f3229b311644606a1fb90a085. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWFW2473821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41061dabc07fafe6901382f40e6f4898c35a7eea698ca7a77a9b2fe263c64ac3. 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/QZW9K2218020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff651f16554c1cdc30e37694c9cd86caa8fff4ebe635dfe48d161270f897643. 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/QZWV32533927.