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 0x2a0f0ebd317f3882221dacbc233415fa5505d171b9e3036840c8abd261df23cd. 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/a5bf5ce8-c670-4555-83d2-460528a7355f.json and https://artists.proofprofile.net/proofs/artist/a5bf5ce8-c670-4555-83d2-460528a7355f.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 0x340a4a1efe4232d3e5e0692fc50e1efb5ca992a4a6ad16d33ca6dcabccb9dd49. 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/QZHN52085576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2a1951577e4ec1aeb3b5065fbc2e617ed49f539e73e63b53a7735ca3a78590. 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/USA2P2251002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cc2438307f59206846d37109e788fe7905d8bd6a8c43f6f3958fbcfdc54ee6. 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/USA2P2251000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef90b3a659f8d6a6e75b58232b40f025d371fa513498ebb5d434bc26f5fff8a. 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/USA2P2250996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205cc4c2e0f47f4bd591267f5de123d58be46699a3f7e2dc9618c6f45ae59841. 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/USA2P2250997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624b25c7d5c3987926d67c41d69a1b30aacf250b605365ae60125b3d52c2d157. 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/USLD91738222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064e3c45e409c8c58311f7eb102e7bdc9beededeaeae766ef9fc4c912fb4d961. 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/USA2P2250998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1723f12400cbc7a8fb1a9a5fc50ada540364e49df82b0092a0d74ea26ff39b. 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/USA2P2348245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba61579c2784b40c7f91959532f67d1df1861d2319659ac1186fe180ddf2a0f. 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/QZS7J2320880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9f3402e4de43e6e18616cfad12fa327c7f30ed4715fe934d266e73ddff282d. 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/USA2P2337227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44129dc7884955df2efb2558cf5ed03f67324c017928a55fbf1f58d11b59cce1. 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/USA2P2251830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef90b3a659f8d6a6e75b58232b40f025d371fa513498ebb5d434bc26f5fff8a. 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/USA2P2250996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624b25c7d5c3987926d67c41d69a1b30aacf250b605365ae60125b3d52c2d157. 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/USLD91738222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15604b6b33e81c45e7c1f32e466dd50e2590aef8f247614f2175fbcafbc91db. 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/USLD91737595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0805b5f729d07536eb05e601c2e57d6a457653633fb8ea802718e8deda3daf7. 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/USLD91736612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe928c1cf5b82931417236e7db36e720c850f47893a845f50f82d3996fcd36821. 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/USLD91736613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad8f54a448ecb43042800521df26a750f681786376386b9fb77efa514b890c7. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/USLD91734862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab2517721c2fc4451ed8b6497463f340c7b0c3430c0a36633cfd506209929c5. 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/USLD91733782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b27632f076f9ba3a62fc505981b60a52d70e6bfde8eba0cb880108f10adf93. 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/USLD91733066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafe7688068698448daa8906d271e254e723132ab305c97a212e3efd7d99684c. 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/QZNWT2025324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552e8eacd8cde27b2b0c04a7d27fc174dadbdd6c182d688da9087810c33e06ee. 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/QZK6F2098292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a88e93b86720d0179d2309a43be2604c47a45eebc629ca66d5e20498abd168. 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/QZK6P2005908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8ae11ff54b99be93a594f337ff0a03958866089a6d95e40cff3bc24f6ea7f7. 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/QZES52067774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41681b31286edc8e82f6faaa356e52cdd1246a02ffc94208f36c2e45bd81d754. 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/QZES52067835.