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 0x94ecd951675306e3f08b5004434153238b89e358c558bd92767639cca6bcd21c. 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/b184a9d8-5b69-40e5-9a27-a82df63cedea.json and https://artists.proofprofile.net/proofs/artist/b184a9d8-5b69-40e5-9a27-a82df63cedea.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 0xc278df685c2e2c883b82b151a287a0c5bbb65a16192e226c7e7c0caf1ea4f4fd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE6SA2261060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8353367d3fe389e702a55e533b5150b936789537daae8dd304aae2871f1a2d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SE66N2278317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3b8510d6541733ca4bc523e24db4c5d4d9a06ffc74b1b97feb002a73b3fdef. 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/SE66N2256979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43530782a1c41b68a3cb23607f34604fc29edee3139abb2db5242da6701fe13f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE5BU2310479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb522f45a24cd4b828f074d554d27404ae1caad8717a73fedab97af30ac8f4ddc. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SE5BU2372823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b117ad687ea5f8b7cb08a15225567b9edec80a41a765c811ec488f239217d55. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE6SA2347776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c988c29ecfa0ac957a53076f8b069195eb34d50e9d505f864e788b2c20f24db. 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/SE6XW2348688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd3fe342d38688206c2a076e0e16f2577a8ce10661f1efdd89417c7a43c7333. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/SE6XY2372856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b131be86be7085afd76bd3db70d7e3c41ab3c66ceb5663d018cc8cd9410440. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5BU2429584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a82cbefc60ce02fbf538faa59d1c16b9639b455e18b2b39c944dec07c76c36. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/SE5752460493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19341f13cc8c64574b5b212d474210ad52d5f9ea83647e79760e328874fefb0. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:32:56Z), 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/SE6I32400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bffcb7f24e9216592689e604b0838462d43fd661a988b258952f4718916cf6. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:47:11Z), 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/SE6SA2404689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bffcb7f24e9216592689e604b0838462d43fd661a988b258952f4718916cf6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:46Z), 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/SE6SA2404689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9984835bf60a7379f9fad0cf75278ced2e6a48a90ee037a8481167895882ee59. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE5BU2590210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da7a15a112c9f945095b1117328edad968726f2a724b04ee295fc00d5f55411. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWDD2566121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e3099f5f2efa0d12c8ad514e6e52e9aa0d497e727f30d6f9c5298b682b1dc9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWDE2528419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53a14be3050ee63c70e2c07e6f488bfe5f3a9aa8d0d0744b3d108c3c628a7cc. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZZ8A2541758.