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 0x6b2963fff56f4614123c7ec209a0c125b75dca0cbe75c4b1f0c0703dcd2d5b23. 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/5257f6d3-750e-4c2d-9301-8f9865cf5784.json and https://artists.proofprofile.net/proofs/artist/5257f6d3-750e-4c2d-9301-8f9865cf5784.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 0xc84a1b753ea36505e264bb33b3c5a1e270077ad5ee836cacdb880021d95490bf. 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/USANG2293309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04448de187dc251a8672303736852518419f32209ab22f5d764c59c650680fb4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKZGC2409243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05dc1914d30640dae16898e15730bf13c55ca5563e792ef6486b1202333329c. 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/UKZGC2409242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63805647877e96bd2356dcf4bc0d6f9a6083badfa1cefa2a09e1b153bf68b895. 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/UKZGC2408711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd497ad4f73da1ca184ead66ea52fc459974dcedff44927b7d18c01b9ce66ced2. 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/USANG2402620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c8c251d1384b6f0ed136316f9f226ae2adc42e48370aa6afa9b9a347179d9a. 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/FR9W12429333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae4dda5ce2a66f6d0773a8955cdbbc1cdf75143db0dcc23e098988e255d9b67. 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/FR9W12429332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cea6acc1ac5683c78d2e44f5c4e519f33ca41053597ea41317770bf8c53933. 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/FR9W12429322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd609e9bca1a3cbd41a139581763f0dcedf36c5e83e2ee0036b3bdb4b2b873380. 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/UKZGC2309301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93c0450d80cda7c78130d9daad03780376403aaabe1aed208f3069a057b67ab. 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/US3DF2409010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f27d27ffb06d0d2cb2d1efb3658c53b76a9b6d16476d391d086cdf6c499035. 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/UKZGC2400757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ee866a94459ef814b684ca53fbbb454e9f8e919d5fccdfe4ef0e89bb38bb21. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMANG2242256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d2dac359aec979c023bb858e4356930e65a3c20e39c16923d175f442f177ec. 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/QMANG2242255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9a7e50c20798e22c0a0ead939996e9141b5e00d5a58d661db83802df25123f. 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/QM3DF2286526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5009d0d471a136273558f98cb75200b7c11fd44fe0676d4c1682373f20c479fc. 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/QM3DF2286525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4343a10dbcc96527d88691f3e57f643e15cc1cff8dc49bcc2823cf43d3a68e. 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/QM3DF2286523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fbadc7287a7a88cef42cbf0ce48a52d8933632f2eca3ccd23bd9cb4a085a88. 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/UKZGC2303094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a496393ffa4b4d0b1fa2d7cc420744e7860e42bea7d3c35740cf987b487754. 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/QM6P42377511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e6539224174182baa33f58e1d57fc0fcc7516df934641e76792508b48105c1. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/UKZGC2301830.