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 0xbc4f06700ccaa28ac90854325f6a3a356c6c6238d900c1af7698ec2c8a5dff0e. 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/64670e2c-7644-4cb7-b6e9-91ee35d5316d.json and https://artists.proofprofile.net/proofs/artist/64670e2c-7644-4cb7-b6e9-91ee35d5316d.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 0x4ce51747df71c16403f453dec07cd183d67905a41ae59d1eea0d05a711e0788a. 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/GBSMU0128111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3826f62c32a4d38112ab96d83126866ee27f8bd7c3ba3119fcd84d439a166e. 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/GX5MY2234165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1c7310092b35f3d90b42ddda251f40c6a78cdebcb767307a487c64e727953e. 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/GBSMU0128113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc7bf566233b89a54fdca0fe2b5dfc09e61b30615e3ef1b0bdd04ae2c5478be. 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/GBSMU0128114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe813c99f1bf32328549bb8d3ce2140ee3097276c5ceedd1395e8e7336fc210f2. 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/GBSMU0128115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28749fc743e0a365aa11386a25f1d5ece904f0b5b74a12b4c7b68f20064966f1. 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/GBSMU0128116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3c7056a494650b814a2a061398fb41e66752de338c8ab62c101aec819aaa8f. 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/GX5MX2284029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1de0f034eab22f0bdd8b74c1d23e75f95c1f59c226b71bc3e5946633d42dc51. 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/GBSMU0128118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5f3658bcd59ecb57620d7acfbfdf95a034212157f20091c335fe897030c928. 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/QZWFK2449271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5a42686c38f6950ada57abfc95f1048b536b95e8cd0a70597a61fcabe1a542. 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/QZTB62404730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7f0b51956ac6258e84d0d8321cd679fdac9dbcb3f4c662e266fc5363148dc8. 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/QZNWV2442611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471077cd804c1094837cef02367a1f9e821e07f7bc44a531da72927a590f210f. 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/QZNWV2442612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2e06675aa5344cbb6aea2810525260bdb448f95efdf81b1421ee97eba2ab30. 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/QZWFJ2356537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece23bc32c8b62513bebc813db6fc0481493621c72c8be71dae4b39942a731ea. 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/QZTAU2382619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea2ef688877d17be39729ae9d53a837ee90aa00c5c0a0708d56e18daeca4bde. 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/QZHN52320105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8924de6c66bdda237fe63755ee0d92bcaf402fbcf645f928aac6c59eaf459f6. 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/QZTB82263253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3826f62c32a4d38112ab96d83126866ee27f8bd7c3ba3119fcd84d439a166e. 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/GX5MY2234165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3c7056a494650b814a2a061398fb41e66752de338c8ab62c101aec819aaa8f. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GX5MX2284029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75495847f168b020235ace54e7f5cc3b2d682a1394fa22104aefb8c770e26694. 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/QZMEP2192945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4c0b37d18ca1135a0eca40c65daf450a4613d13988057d299fe16bed88c5c0. 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/QZHN62103085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a3189a159efd742dc86c25db494fb51b5050bdeb278b6e10f7d96586e7db64. 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/QZMEP2192947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32432b93f9b8db0cfe832844bf7aadfe8f04f10c6868f3830156bc14920b3c2. 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/QZMEP2192948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5208666218caa65e3ee501dc4c9073e4433df84ccce99b0e558aa7ed594510. 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/QZMEP2192949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2529c40e51ea30e7953ff6ffdbd7b10b44f11fb057b0977804116008f8b2e302. 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/QZMEP2192950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4c0b37d18ca1135a0eca40c65daf450a4613d13988057d299fe16bed88c5c0. 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/QZHN62103085.