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 0xfae6abb72c9227dc6e815aad2ae061319af05102424eedf243784517ed9040e8. 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/54cd41dc-a265-4168-8179-eb1192978df5.json and https://artists.proofprofile.net/proofs/artist/54cd41dc-a265-4168-8179-eb1192978df5.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 0x378194f29dcd7f294689ebb5dfc10aa5977ffa1f444d034f932e76e0d72afb41. 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/CA5KR2400865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3d4079073cb932cf8cb242dfea4d4a7b80953c18b6ad6ad313b75d341a9a4b. 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/DECE72301609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e3a1ef4a01acb35f0dfebf04e1c7bc0fcb7ded666f7b36eb35290be05836eb. 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/DEPI82303697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06801c37c5e62dfeb06cac554e2f1dc8c3349d5c3e77297444e90f979a6ba27f. 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/DEPI82204482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa94045a803104f2e20f718b7d526e8ea3766703bb584f596ec06daaab4efc4. 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/NLT2H2301024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d87ba707952f9b5e626737c6ff8a8e54a0e7a3f7e806d55f844dba05645ced2. 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/DECE72302336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4165eadfc91486f0562a5c0658256fa403b8d72a19d5169bcda2d01fd28bec. 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/DEN062201354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8ab00c632738a3635c03161b3fee32faea6d74da2c09601beedb230307f4fc. 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/NLT2H2200676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e080a070df915268210e264a74e33d13665ff42302852189eed365595b0e09. 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/NL5WB2200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe430389b04c7fd6a132e194aac85ccbed2cf75bf2e71578ba5a6d440e404cd32. 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/NLT2H2200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9f5b5dedb8e06f17c05c2587e728cb3aa67402da4637b49f7146e93f7f4076. 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/TCAFT2199230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd462d1330b95ae60946bb6ef2a7c282a30419d2278f31082067db2798daf705d. 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/MTA1X2144001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef01c46b299ed4ccc7829ae032764583ff952b334e68a6a31e3b7d89f58a618b. 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/NLT2H2100521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13479c8f7f0ca0c6c0b4154e38f13f0502c4a48bf98dba8e29526cae5a5454c8. 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/GBKQU2134400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4fe5e64541fe98309f3b9207ba1c494030d7bf3a9169d6f8119ed4c89df493. 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/FR9W12030970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3d4079073cb932cf8cb242dfea4d4a7b80953c18b6ad6ad313b75d341a9a4b. 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/DECE72301609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efc58256c0f5d11cf12a4ddf4bd6cc8e328123311d07762dd9f01b6cc999ef5. 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/NLZ542101920.