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 0x461a3a53ab059c558e327fef0d25cbf8f722ef14005ac376ab966d88959992f3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96b4079f-e3fc-4831-b9cb-b78468bc561e.json and https://artists.proofprofile.net/proofs/artist/96b4079f-e3fc-4831-b9cb-b78468bc561e.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 0x692ad26efc98b8aadb9091b84bd17289a28153d076a5040707ce9819432b02af. 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/DEVX52200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7ff61f9fa378724b467e193f71102f3018995a384afa33347ef199c93613ee. 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/DE1N12500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c6fdba61e688cdccb6d0cfef8294be83788e92a490ca8540041460860c068c. 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/DE1FB2400513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2917dc36a41cad01d9b3b520fa39f70615cd8f3d9fce44ce83acfcfdc2b5ac. 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/FRX202119081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708ef5dc7375aab7dc0823befb57b82462217528577d50bbccbc9043441b047c. 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/DEVX52200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692ad26efc98b8aadb9091b84bd17289a28153d076a5040707ce9819432b02af. 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/DEVX52200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8491408d39f8441bf619c0b2d3e18de3c8b5e5acdeccf3abe5c0cb3f97c104. 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/DEVX52200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27e33645e728dc2aead0af4a45fb2e16307e3044c0dca16fdb1fb8172987099. 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/DECE72002870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472c8051828a62db3f3c96aa61db7f7fdad45a39dd9ec3298c676fab4e6ced40. 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/DEQ022004013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f6a4a0fc75f8506a69f897f3ba4677dda24bcb0eed2cdcdbaa06536e733c1a. 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/DEVX52400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d7db51b82b4d40022dcf8249db1bc7e77fde53bbf692ef92fd78fcd58cf3e6. 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/DEVX52400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa610b2a3890fd809a439d2d29de1c56efee909ca8ba8432dab0369c833d603. 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/GBLAZ2402133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86edc332f15d1be046a45919ff9a4862372849e2489a8e946a5302218b545973. 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/DEE862201571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f6a4a0fc75f8506a69f897f3ba4677dda24bcb0eed2cdcdbaa06536e733c1a. 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/DEVX52400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86edc332f15d1be046a45919ff9a4862372849e2489a8e946a5302218b545973. 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/DEE862201571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e66a39a556e54442b00b4f0b9c125e54d02df85dc727c68a09884239d48845. 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/DECE72101509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20698309fc7ea5dc4488500ac8d4ab8fd1b649ad6da16fd6a5a9f022943e1666. 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/DEVX52400196.