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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06c477aadda3cc0f28e95543ec4c0b02ebb3889d88532b24e6bd7465280767e. 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/881c1a19-06cc-43b0-9365-eed89cd997cb.json and https://artists.proofprofile.net/proofs/artist/881c1a19-06cc-43b0-9365-eed89cd997cb.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145e2c6e1c6508dd828cfef1915eb3c2ed8edb942e852b91923ad662e8ed8713. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX282306310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9376de186b14d18b1a7031e94276b3a55ebdcbf693ae47f559b4abd56ae2f85c. 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/FRX282306311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62368603aac715932b16661f19a098bc16a2ac0ed87f69316f9c8c7fea5fd171. 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/DGA0M2342090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213ce11d2986d0916fd782a6a2243585ca97b7691f8a6093f8377448f61ff319. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DGA0M2342091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f4021f0fb54ec695f7a8920aa5f4e4907aa0052296b408328917dc0a0b0cfd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DGA0M2342093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dcbf85df74905f164e49d302341645c2d80c65d69c29f3ce7f582eaea1cb0a. 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/DGA0M2342094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cb396524199a508068fffb45e4296a2349e3232e6c8e00bf68775e8d8799ff. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR6V80349525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716ae676f303ec5a2f9dcbd750d93506c83bf47bf9611592d61b0d007fbe83b6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR6V80349526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c35e046ce484662b365d70b21a2932c3229d92e46c2abbfe449fe6e891d328. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR6V80349527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679af3f3d9c9ce103075bdcc49a51ff70805e444b8e9b7e323de9e1a1c06a1d9. 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/FR6V80349528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e6b3c39cf2ac3ba503d8dd751a80bb36cfe153154fec27dfe88b522c6fcc98. 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/FR6V80349529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adb565481b30936e2dc683a728cf8a9308099a6b7ce9b20057ff6b57b98c25a. 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/FR6V80349530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72bfe382437489cfbf880b24d05c57608599839ad2b9c3ecec4cc7e1b0b5a14. 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/FR6V80349535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071943f7b3c8251c270e934e5d4c31a6356aa55d6d787a9603086766f4ede50f. 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/FR6V80349580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229dfef2b0f9be9b92a085a6690962fda037f4dbe7c45984ae34965446c440cc. 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/FR6V80349581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a345af1ab326cc2933d8fc41cfeccb9b213cd67eaa2506748d87f8d1102d72. 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/FR6V80349582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1b8985a533eb405c72c8334455556e72bbfd0885581360ae226d5f61294be8. 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/FR6V80349583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7809ee861b692c4bfc82206271898c854ece743fc859d530f8435809e9e7b763. 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/FR6V80349584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d709c29ca5e4fe69ae748c885a15f868cc918c2f6afe532f5a7a3891db50d1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80349585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5848c57a81bbd6875435d9ecbe988201d4873a6e4764a6517451f1671f87250c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80349586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914a34957ede9ac6bf8283fabe35a719c8da13ffe95662af9a0846ed6079ceff. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80349587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899d5de073041fc29c080efb0eb175a02261fb8c5038672b7f378c5743714009. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80349588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72656a5b701b580b67c6f71968d0fc79782024ba3aa10504739fe0b3ba093e6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80349589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebf4a01312f5c9548657ee357a311de4764de09396f5ef9863a0f008e61eac8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80349590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690a4fa0237514272bd9388bb11d996b7ba9d0fafe5573c55089dfae334fd11c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80349591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706a007c29681c6c59818df85b50ffc88de24c57a334511ba5b10cde13d34ed7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80349592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2053ac99e7a51d795dffe839b1618e70c00f6bf57969592be44497d657412e9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80349593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7eb6dc5dfe61962319978e79a39a370fd2bd7bc8aa0749f90969a70693edd27. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80349594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d644b92287f535f905abc43985e9ea07ceef9e266bbfe5581025679e2a177b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80349595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744c81f6a6fff662204feecfb97595efdc8f9ee7efd250028f157a23cfd84d44. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80349596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b2c6f864c13bd36463c94ce71186378c7101782bdb8fe60c43d3189fc2bcd5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80349597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207002b7c9b336a2723c4b365f4f25bf796de0537e7bf69bd373cd3cc5ad1612. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80349598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4f89dc58b3083c1f8c3c8d8b404b23796b45021ec2efd599a713f9c262d4c2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80349599.
Naghamat Yamanya Kahlijia Ala Alat Al Oud Vol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912ab18bd2483dfc5f148bfc016e62946fbb1509253512c8bf3a02282a018a5d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AEA140700628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe835e66eadc2c3e4959d6985ec9f3ad2f812a6b67538db0ff75d75f637c32679. 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/AEA140700636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e5c314b7df0396d8e1525b175d394f10bfc71a251bc8a34ffd28cc8f3b92cb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ARQIW2408877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24206151f0c7a0b11cb92c135075b3af22822ccc1935db6c978945e067357557. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DGA082356217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3c56990d94a823f8dae9b4afa473892ea141f91d624c8857bb071f9ac833ed. 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/DGA062381993.