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 0x8a0f6a360f378f53d3b020226723fbb97fc0532de4125fe94e55f23826033314. 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/e4eec51a-0697-4e5a-9aeb-576a33c46b0d.json and https://artists.proofprofile.net/proofs/artist/e4eec51a-0697-4e5a-9aeb-576a33c46b0d.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 0xa45729b8fe665084da760a3985ca1a71641b94a86b1bfebaeaf82080fca93be4. 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/FR59R2346339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309a3b83253d14f4c93500ee892df8f543882555c7e485bdc8a8500b5b2ab9c3. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/FRX202355920.
عيش بدنيتك / اهذا اخر كلام / اللي بيني وبينك مات
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbc20db45f2de1c62da5ecb986e8ac5feefa6133eb1fef151b6f29379e2725c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/FR10S2463761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750a4d4cad18660d428999a2f8d4d6d9008c6f91220a6a0c79f46db7a3c9ef18. 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/FR2X42496070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558a1fee9df2131be6bd233c460e86e2a48b48176f73e809e4f63d97377e68d5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FRX762444084.
يا قلبي يا مهمومي - وينك يوبا - سرحوني غنمهم - دنيا غريبه
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf325a14dcc3b9a610b67823a5fb6e6f5c166757d5434a362669e09ab8077bf82. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/FRX872443050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06966db8590e1de88dc69211f43b29fef47193db3cf30017ead99d7fa180cbd1. 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/DGA0R2434791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7309957790dca57c627f050ef0eeeafc50a3299527394015a6ec28dc595710. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/DGA0R2453939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff93807740ec2b8d0a294a7d33b7447d786171793217534ff59230bc6262731. 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/DGA0R2453935.
سلطنه ميجاريح / صغيرون / اول نظره / كلشي حب
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50332612adaf15960ee5d09415f5bd3c6f80a321654e84992cb2aa8e9072982. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/DGA0R2453933.
لا تذكرني بحبك يا غناتي / كثر مشتاق / اه من الدني
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77838d17d5b97eedd4566c5dbf4d01e28083589de4b7a36c605b1231a2b17f8. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/DGA0R2453932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f33e3c0168eb8253f93190b74bc00c391874de7aaa396e1c7cf89367b45dee. 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/DGA0R2472740.
جوبي يا قدس / روحي نخله بتكريت / هلا بالكوفيه السمرا
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8755df54d157da8cafbddf5fb4d832b9c800ab39e2ac1af7365f4460b98881. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/DGA0R2499199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f40808cc56b3e09540b170231ffcccc2de477c2626050df3f2b3e15be80487. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/DGA0T2430083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaada4affda376e4997f7fc0240acdc148be6fa81fe0b2beb2aac7c7bd3814429. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/FR59R2590215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3194e802d75401b9b5098f6bf004d26f31f615eb86f90397ac20048bbd928d6. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/FR96X2529833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c57c90aa62d9e1b20f4081ff98501d22e3ed34c176ebf47d00b1b4f86a95a3. 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/FR96X2529830.