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 0xefa07c59e293803d1518e80d9500f29d04a22bc01aac22b78bb5057a223a8727. 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/2ede747a-6c1c-4962-befe-8cb9d428733c.json and https://artists.proofprofile.net/proofs/artist/2ede747a-6c1c-4962-befe-8cb9d428733c.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 0xb79a09c5d3e4a3909169ca12cbf0f4a03f958a896d7d6fcba2b585fc50866aea. 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/FRX282204206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1f94531c26adf7c0e17bd25217e7124d19cd779c77dc090332d0a7c58e33de. 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/FRX282207943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4f6dd9bc31f90d12f9823383a645e0843eeb61dafcff173193d9f518f53c45. 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/FRX282207945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2f69b0706c2933709df69f1528346ff92f4ca879e6552644f34cdbf6f4c8fa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX282207948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b8b944f829a149b2b779a0aa56f5be8a76e90575f8c0122c77638feb3e5f0b. 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/GBSMU2340577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b4213ce4fc6faf314eb8ad46a7da06220067717817c59f124d9a3f6342f98d. 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/DGA092410155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1762d8ddd3b7fb08f8fb38351a51f3429fad0cfc8bf9901c14d49e74d22057e. 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/DGA072372079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880f3910dec282aa1702ce79f1befa8e451b87ec81c84376cb371e88ff6c4325. 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/FRX762374341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0c087ac336cd0082b621e306fca70120d4835065143197f476d96881e5e17a. 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/FRX452306461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889723e5123a8ebe1f0c9c3548912f304fa4cef1fc2a01170f6baa5452ae3aa8. 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/FRX452306460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a36734d840d746bebd89b8e4d21e231d072d358d4c5f01dbe2bc8674a038ad3. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/FRX282317877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed590d0d0730279b1251a8a6635ac64f4de65c3c353daa45ebf40e41d91601f. 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/DGA072199693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6bef39f9022a8e333c032ce5d95e0d2fbfb5b2db0417f4d4597925ecb49b7a. 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/FR59R1986838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1afff54e165070d6830952c03c554230f4e4338688ce85f9fbcb9cdb810a973. 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/GBLFP1700409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddd1a805ac1e879e87641d29ea268dcb7a81016b09660121fa26bc860e2d5b6. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/GBLFP1700336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf989bbe09313b8521ded24bde5afbbd9d31a8b32fb3fcce534efb860c35d3c. 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/GBLFP1700337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad45f6425d2181d6e10d511ef7cfa27290c3d48ab86e24c618ccc57faa51aa68. 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/GBLFP1700339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14422d8f33c4f7a096f4a7abdcf53b0c03801bf839012d181038885cf3665eb2. 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/GBLFP1700340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5243e3df33681b769e7b286c61fe9594a5f5a709949e41aa7eb2ec5fcde27786. 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/GBLFP1700438.