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 0xc3780691115508f9b6be6919029932d2affadc2afa996daedb4ece5492c198ec. 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/1dd3e39e-feef-4273-9a7d-8070557a9836.json and https://artists.proofprofile.net/proofs/artist/1dd3e39e-feef-4273-9a7d-8070557a9836.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 0x904cf8799d0aa5c71e7e253d9e92baddaa165deb41e631927e706abfc9845f5f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM42K1967618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5583ae649936e6e04ff7a05e5811544fd5233aa1d3e4a80f64cba80624d18f6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM42K1934372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614b4126163bdce694677435dcde2810c32324f655dd5072143416c70fb9c4c5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM42K1921968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e87db49988aa7044e9c6c690f4fb5422257b34e64acf301e3890d3668162874. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYU1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6162f0d37540a865a6e727ea023ae233b140b2a3eaeda12c40e65348e988fec4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM42K1958066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca66cfc16453ef23e81f037b8596fbd48a885d167632ed04271ba4fbf5d7590c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM42K1964667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac6d470544de50d3ee246e991cfd7f14f98aadd642f31fcdc68f34c63c57d7e. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:35:21Z), 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/QM4TX2195536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4d25bced080a873300611dc3f5f24200c2a508fe0df943d19b0400e327452d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM4TX2195439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a7046156efa8b67764b18cf1b81c8c4576a9ef45546c55d39b274238357af4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM4TX2195412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62013078a8e7431716d0dd91e1d34d72dcef02702c0f442033ad3546e9e45d8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM4TX2195413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105fd888bc3158dfa575acb344795cf06277c770f13cb72115d507cce46cd6ff. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM4TX2195433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7e1330407dde09931755ce6621f8abc0be1ca493e4e54211256868dee16b3c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFME2178328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd56d6100e745460bb339dde464b47da21d1e2eac6653feb77b9f1cf709e57f2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:15:13Z), 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/QMFME2178332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8e018340cc6aeb33e1c91efaa1f0b5bb633aae640f1f86287a0dc479e8d411. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QMFME2178333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf21f90e910309c37f98d58ea6b9668a68e1902fce744ed1370ce43376c4bd3e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QMFME2178337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2ef3dc40bcd1a7000854246ff39fd1e59e955b2dca1e4329520d09bd15977d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QMFME2178338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb82744d5899a30268c327a262a2085ef376678a65b7eb9a56596ac8b6c56f1b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM4TX2218094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de3b6d94f92f5f94ab232fb23310a7eceaa347d61f4a7d4a7e1128dca7c54a8. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QM4TX2218100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6097f3a248dab87acc9e9ce585579dc4386841a0374151eb6bfb56a5d18a15d8. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM4TX2218101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc9fcaa3dd899a2cf97b2a5da33d8906ae2d6e175049abb6b68bf637beb1d9a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:07:48Z), 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/QZWH32300002.
Last Train To Nowhere (Acoustic version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb431c215d10240b0c796f18113e25c920cc443bf9d93374d4b8e76f9ebe319b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZWH32300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac3cd162d188f4698dc8a1524caa63c5b29e7e093f64b66ccf4338dfce696c1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWH32300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8000f4d63d1709680719268ebf775e7ceba1bcfff06dc1990cd1ea3e2610e1c2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWH32300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f1ae1eeeffbcdde9fd821eacf2e9cc759fec68cfb68e0892b1e50c56bfa2c7. 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/QZWH32300047.