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 0x3037e558266d9e4def2a9f7b7409839edf1063807e0228e2906aa0ec9c4e59b6. 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/76e1b17d-86a9-472d-b92f-f16a8289446e.json and https://artists.proofprofile.net/proofs/artist/76e1b17d-86a9-472d-b92f-f16a8289446e.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 0xd5cc7254716be0b04388f8142d01369da7866c94a94f549a5f523707f0be92b0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:09:46Z), 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/QZNJV2007823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ad896470ebc468a8099341ddfa70d2bdd6185a0872b88c9cc62d4ae69cb283. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/QZHZ51997637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6d189654e84f6e7975a57f2f6570fb2274cc67165113e44ce2ddb2df279941. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHZ51963199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f5274c6299b71a98ff7ebd2e1f4b7f372d7762efb0556b8c283b450ac98cba. 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/QZHZ51963703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2757c113b49d4af804455aba2779eb98f2736fc9fd8f37aebab4610a9f8582d0. 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/US7VG2052649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab75d64520a6f44be8d1333f05881bd710990d06ff3306a9d3767f274e9869d6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:08:39Z), 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/QZHZ62098572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc9e25d78dd22cf8143fcb51ab66ba9f2a47f4e551aeebc3b9d0d78dd127442. 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/QZHZ51978873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ff41c1f554fc06d12ceb5788983e6fd864732086f294608db49a52a29eb624. 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/US7VG2274925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efd8cb8fe7fd6b18f172142471ab6e13664967168d91563cede855f87b0f9a8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHZ51956896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca736a7ce0bb628dc0b8d39fb064e3d0a419e05c5ed044668fa782fb321994e. 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/QZHZ51961296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae0bf63786a2ebe4c0eb2945853de3807b14ad33ce5a18744d9c54675e1890a. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZHZ51959474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45af190e6fd9f0da732a12e8090fa0982b6a0a7f51d121843de1fc137c28379a. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZHZ51960349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7016e147273601da8d45d46a0ad69014ef24b343b031fd6480a1c1abc733d1. 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/QZHZ62098500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84add0eb8ea690bb5847ac48cd8e85ba566e388ac2c9ae32911313c565f72e1. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZHZ62098414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd760606979e5b7f01713c2d2d7453f5c2f410f5f0154ee7d413b5427e144b0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHZ51907880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc543ae9592758fcfef416cf152ec62858195eb5476e830f6c7efb10d57f1635b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZGLM2026037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3f4e8bfa9c9a5cd547df9ba413babcae06acdb3408e906efc07a2fef20745f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:14:35Z), 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/QZNJV2023250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47c006598807dab6248959da25dd9ad7ff26691c7f682e0908092cb49b75679. 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/QZNJV2153435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02eb7fc7aa8c4f93c5a3f7410b3b4ef60d3e42842c69185c1e1388e03c229b9. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:38:45Z), 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/QZMZ92232260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9556662d84c135843ed80fabe1f2b8f38f6bd200abad4ddbe0340060db6a1c7. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZW9L2376454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6738b1f175f478ece14aa78e43a05d7174801c400649640ad67c54a5a8d86152. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNJW2408048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74012a89c88f24bcae2a5cb839595ecd18e71e167332b7ec9943414a0cad84c6. 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/QZW9K2466853.