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 0xd1d73cce739b37db34291028965e5f29de8bfea72f621951444e6422a9d8a3dc. Chain 2 (Bitcoin): anchored in block 953627 (2026-06-14T11:43:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2dea2309-f3ee-4ea7-a08f-c01d93f9b1ad.json and https://artists.proofprofile.net/proofs/artist/2dea2309-f3ee-4ea7-a08f-c01d93f9b1ad.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 0x4685e319ac6d3aff6ec373e891fbf969b0820b43c3509529c896b4261196b78e. 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/QZES52562777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff80a35460b184d126db9ecd024d79aecffa8f48e7ac971e3adf22b199c0d6c. 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/GX53U2002886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4dae74b8dfe9a487b4cdf9536344cd003624f1e4719f5f988aaacaf1f1f1ef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GX53U2002888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a44687e8ffb6e9d606b9febb1916f1a51f0f0da5e7102992e8133b16d1b7d9. 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/GX53U2002889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ff27c72601b2c17d2173bd61a59e0129571a407d62279f015ea39acaee65b2. 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/GX53U2002890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56814ce1432d2daf5d4c61fc8c87fac455e978ef2eb0e50c1b6a74202ab26378. 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/GX53U2002891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0479992827eee771e2edeba7c55974ef46d56a767d6073520d4f1ef1b7668d3. 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/GX53U2002892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b459c32e3f87c24736461ec585fbe462539efcdaaeacb403353f52af52daa56. 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/GX53U2002893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6714c6780a1f30da53fc4359b6281318584d2f19b311732239092d40c4a81abd. 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/GX53U2002894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e9d28bf26ed3a35c3e08ce13a5333278f27f7a12ddf5c2aaa586ea1ec3c9fb. 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/GX53U2002896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6af68b0e7ca2f140ca5760a55de9b0508df0ee04527f2552332e997606f6a5. 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/GX53U2002897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303f16b3c773ec81bda7d47dc8a80f0588dace6d7019b61098ee331385b6cd31. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX53U2002899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa571921e153abf043d815509ac91351c9208169b6c04f5712b84fd12d25991d3. 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/GX53U2002900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba85d9672d47043857c5d7af66f0ff00aa2619914330e9c1ec79cd948a58efe. 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/GX53U2002901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcad1c2c27dd2648a2a7562aada63f5ee0b4b4e60a2923c1ce174440e1c60d24. 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/GX53U2002903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d27bb9951a0c84a1cd70dac4cf93f4901dc72f12ec1e4c3b11df92237827c1. 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/GX53U2002904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac408fcc282da3c32621b3fd7a33de4514a4dd5f09d56a897b11000e65280e42. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GX53U2002905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f1397f80db46088bf7586da13421e4d185aedef90027def74c0baadce90b60. 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/GX53U2002907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd22283f8ec7ab79cd1bfda5fdf4c8762f865cdcafae62478cc739f5f59162ad. 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/GX53U2002908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6951e2fbc78d205094041358fadb22c1de5d32f01b4d9029b0a4a368652df55. 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/GX53U2002909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0fec3f0d23cf85e51fb0be0e8f03f00af15d037cf831f3ce73a659ddd488b0. 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/GBLFP2205033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9c4a7be83f13dd7f1dfc28e7cf6eb49e8d21dbf571efab73a076a60933027c. 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/QZZ7S2421196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370f1eeaaf105167ab38bc86c4a86e44450f0dfd3751d09b80780b8992eeeb9e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFF2513187.