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 0x94e4bdab885ff4c0131d6e7c6b434a91b5380fb9342877eb63c40c191eb4b976. 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/8b9ac53d-f168-4437-8fe9-a650039714bb.json and https://artists.proofprofile.net/proofs/artist/8b9ac53d-f168-4437-8fe9-a650039714bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
fabric presents Sama' Abdulhadi (DJ Mix)
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 0x16979a416c415de932af0d23c20c914b59c7b69b747f789003fbdaf2178c4c92. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/GBEXH2300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7132040b893840f406b2991267ce1b03b077b59b98f6c2356c87e80a482fa96d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWDD2244285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b0189ee66e5e270b4bc733272a23d8833927db9717da7efbd44c13f9897762. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBEXH2300185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16979a416c415de932af0d23c20c914b59c7b69b747f789003fbdaf2178c4c92. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/GBEXH2300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fa6aed10e8ebf09d35707f4848ffbac62a90e8ce61a5b8b76960c095d28c8c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBEXH2300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7132040b893840f406b2991267ce1b03b077b59b98f6c2356c87e80a482fa96d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWDD2244285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a1fab44b3bbd8f55465c68fd725359a8b1d97f1b5e8c48dafbf27339d28950. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:04:35Z), 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/GBEXH2300182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513409a316ac4b4a6d249d0d39d4a974fe4e2f278cc0d288e8214f176b44ecc9. 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/GBEXH2300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe767aef471876733373cc70bc18d1ebb9aa820334c2c2e0e4993812ef37e4ade. 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/GBEXH2300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b0189ee66e5e270b4bc733272a23d8833927db9717da7efbd44c13f9897762. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:47:07Z), 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/GBEXH2300185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb919bf221f93c5aa179fd96c52b908c88343c53e7a1034be94196865d06eff82. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:46:30Z), 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/GBEXH2300186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d01512edd7b34dfb792987ca165a7271179c4db01f92febfbc5b3bad772a4d. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBEXH2300189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07cfc2077c5c1a04163aaf3278dcc7029ce85075e642dee8c7a368781e2f0a4. 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/GBEXH2300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf1456cbffeebc377d345211f366b24bb46e26ab6c28ad0d783e8478bfcb4a0. 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/GBEXH2300193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83c401e9e87f575e78a994628082f171ce921d30496ba4447fc5f7b1039e6ed. 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/GBEXH2300197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda0fafc240752ef4715d651af96788c955436c8623bb9a0dfd1127eb08a5dc3. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/BE6F52200120.