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 0x84d9beeedd3dfc26002f16fa77bea74c9b8c24c5eeb11a3597ffe25a02e605a9. 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/17c30fbc-00af-448f-93e4-7a950015f18d.json and https://artists.proofprofile.net/proofs/artist/17c30fbc-00af-448f-93e4-7a950015f18d.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 0xd26300a29ce8064a700332be94f9f66a4b6696c4646260f3c208d7ac8fd64b1c. 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/QZNJY2490549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01830ae66f493c35e5c2fa36f7a9a1535baa7cb906aa3c88b3c06f19b053be81. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/ESA112565780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368536cb7386f0526c11df4bf03f7a01a9893261223898dedc595eaca93cb166. 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/ESA112565087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0022868f9b59ef538b193e3869ecc93ca93ae4e0b55afe5d190fd21acc0df7. 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/ESA112565089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9431642a4185c2c9d32883967b1925074628d254e27d75aafc1abc58581ccee. 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/ESA112565091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68c7c54c364fa6a78eb3d9fa52e138fb77255b09f56879727db09d34daa2d5e. 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/ESA112565092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a77e6b7f47995f638c22dcf59eeed2ab8a29676566ab643ac456cf457a9b11f. 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/ESA112570664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcc8edd686496fa9f0c0f9a04a00e6c90ba5f8ee4144648c4789c8a658513a9. 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/ESA112570447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a35916fe344a030b8e5ca95866e1924fbf235f7b309f2a37bf27bda5286fca2. 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/ESA112570448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70a22824e6c9032c74eed4a8ef3e4c1248c5fd2f45d385f6153701c11bb7464. 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/ESA112569958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5962f89fed898908ad92131bf2b9e0abc06e6a892cff21ecca6c5d82cb263bb4. 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/ESA112568971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f11a9d024bd7f654eaa16b23fb2ce515777466e2a5c204f7c2c2cc869857741. 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/QZMZ92599343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee2bd566531e97d8346a0404163311118d80a475fa97a5730fb2dd0933317ba. 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/ESA112567724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36a12f8443f172197e656d1f9b701e43efaf9b9253b5715b462cc51db0b8f2d. 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/ESA112567683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fb74f214a7e6df621ee71d697792d16e5a339f7b1adf77d974cbc544b6b1db. 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/ESA112567117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b01497f9fc027f249cf8b824f76937ad15634bcc50267de65c6ebf812a7b55d. 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/ES22F2500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caa3c08564c4c0ee181da9ed5d5b8864625e83f8e94fc0ccbb412f35572bfb0. 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/ESA112565838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c6bc3d370a22546b06c0c0a9c21f44b5497c8615580de56e4db8c32d547835. 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/US7VG2445266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c553e968efdb3ee4c5c5d12fb7582688ac873edda7455b99e3094f20e35ad43. 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/QZNJW2409133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c70c48d959cfb9fe10fc470cdd4ba66a32fd3f7f8b89107f0eb8293ca6acb68. 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/QZNJV2425814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765dca22d4ff1fda0dc4529d0795abe483ea8afd0b4a49de5616b9b392be58d1. 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/QZNJV2409764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a26006c47539cf60fdad86b7067923b925ab5c9ffe4698f013a3cbe0471b188. 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/QZW9K2363567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3d376bce75c883a37c03687f1b5abf021b726d61f17eb53d4e69a523cb4224. 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/QZW9K2363574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78de6990413316eebdd74299cdf4bce573db72f7668005191d6856d273c62ae. 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/QZW9M2372597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a2b15f3cba53034f4ea9eefd6cf4619cad5c70e9b6b7a1a8be02b69b29bf3e. 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/QZW9K2371014.