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 0x65400c30d292c6952221b7075f385411cfc6eec0f1e38e1d58176888cb698899. 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/8d97c07c-8d10-4fa3-8b33-f738069ca8e3.json and https://artists.proofprofile.net/proofs/artist/8d97c07c-8d10-4fa3-8b33-f738069ca8e3.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 0xc3975d6da923e6c8a21aa05f23e9f67cef623cbf8a4d711f15308a0fe23911b5. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:00:42Z), 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/QZTB82373092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b1b7ac0796b62f2c10307384e6a20591e66bc9a37f0a5adba90195c3f4f366. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTB82373093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88665182b7cf2457c25412bb386d98fa777778bbcdd3044aeb99191bbece4a7. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZTB82373094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb19150142e2358d90a8c8eb77de1a2c3bcd7ecd748d01f026315e30c8b8c40c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB82373095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7f74e4fdc8b861a61f6c52a504fd38ad99f43443bfaee0bdb29bc0f347f7d2. 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/QZTB82373096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda945fd1a15ab21e382d46ccbbf56f120b901fa0cac8f17241cea6db82ab2780. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB82373097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3d130272f65a3ef217afb534c9fb951368c05e90163964281148d964346772. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB82373098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b2be268ba544179eaf4c576db4f6de0ce7f0d110dedf64c9298cf61fef796d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:38Z), 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/QZTB82373100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d8a7a91baa27659aae271b5b3010dae3911d4bad469f22f5cec4c2297c7444. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTB82373101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a54c401068a95ca5748497a457b9b6d4f41e3a469887f473f43a08e9b0ace9. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZTB82373102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe556b256d899435a017e7eb2270c3ba9648632fb1fd6d5073ab98b9d2a0c7fa8. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTB92354699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6080e9d1f5516c6fa3f752eabece502d5769e0b7c7cc858e6c1d76b08d45f313. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZHN52493858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5695ed11282f96b32556ee59b03d30294991c4abc28be788444ccba0b46433a7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHNB2480359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ea6e9209801f3e8f40e914f3952d1b31b1a89f247f3ecbea57522834257967. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6N2462942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb363ee75865190a0df75f7d1f005758461dd5c507a5fef2969b2c842aa13c0. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZNWW2454253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5909b29f0d5d566217949a87bda556efc508b1eb501ffdf999724bb7b9be14. 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/QZRP42459258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2455386d2a2ba4d3920036fca09fa3c68587572be7452f3056dc00f4e66ef4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWFE2430921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a44ee0ada688badfd2b8bd0d79f842cd23af372b3f0a738531d23c223b95dd7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZWFP2453319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1d29ffe03a064b2195a1e9785e9d62685a1325e9cfc0913fc0227933647669. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB22473884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe334cad8ffdb65a144cd0f2b26b9d854c8372307b768cbf7594f7e71fb659b40. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZMEP2518243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f29ef601a8c5ef079637ec47c99500e3f6793000216654f4e56e48db29e5914. 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/QZNWS2586333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1b650821402c52872b6063b65acd2b31c4304cbe619559c5bf6a4a87afb463. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:54:55Z), 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/QZWFE2513674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3746c3a11bc627935032df5f9aba15b114db8c18b320634c66bd7b4609bba025. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:03:56Z), 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/QT6ED2521646.