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 0x8f83f7b84f475cfdebabea31e8e5d8f368b3427f14af1978bef6aa6de35ae88e. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49ceab8e-60c2-4bbd-ab1f-c2be490207dd.json and https://artists.proofprofile.net/proofs/artist/49ceab8e-60c2-4bbd-ab1f-c2be490207dd.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 0xb0d7d0ce537045da23ca580ff3ac7ae11b3b3f69b51616960fc092867d318026. 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/TCAIG2478717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077c7091923db1866baa4e2d9c429d04795121b087d032fd2a8b48b92b6179f1. 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/GBKQU2488642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914cf32cb42bf594f74f23e407c42dfcd6fb99acd705d3f1f9e31c1139e7a8f6. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GBLV62420006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47c23a615e92c9cc016b518576bc3089e742ee4d14fa10ca414b1d12934063d. 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/GBKQU2507679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3722dcbd139d78659dc1c0eaa0ddaef382b33a763e6b5ed1e9a49294a39686. 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/GBKQU2507720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d6c2ff4902a987d0fceb8c73330397c90cfb000eca7d54ee8111180b161e68. 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/GBKQU2507683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343b0e88c0e37c12d8ce699bff091a3f9096d5af6297ebcacde400ea9ca6357b. 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/GBKQU2512167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0364742fb8b584fa5f8a455d5a552d8a81c03c1c0e3d836cb256b5f7709fb7dc. 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/GBKQU2512168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a299be541e9575d78be92b900627968f8fab85a107acabafca54d756829cd1. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/GBKQU2512169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58103c52ae398b280d1d933f65e37afb686dac0975ac7e5549616c217a512fff. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBKQU2512179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95737b1b638fc47b31e4b52d3580af547fba3959fabff4a7e9ae7c9da219bd5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:50:19Z), 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/GBKQU2512180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fbbb359deb67842ca0ad499379678658c2bb0dad2559363b6d023a7c18725d. 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/GBKQU2515119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0c943d956b056b164bfe9c299dd6f8a6e2a6b83bfdbbdc1b4e69cdf7e02369. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/GBKQU2515123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6da31c19bd7f6c8dee231df254af0831bdb72fdf40a9938b2523abe368413e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBKQU2519690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcccb3ac3e5898176675dd0ad2400fdb0dc393fd7e8e2581043a8619cc43962. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/GBKQU2519691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b115500dc0ecfb8404015235f69cdf7c350ccadc2bc27ea806d3596e37a4cd. 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/GBKQU2519692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45ce9150c7682d925fea14f03b3d003e059f8b2972d3162a4d1808e01d959e3. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/GBKQU2527967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6306b02ee0a6d291f13c77bb0235c3907ef21656da82c6c74e93617374c3cc8e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBKQU2527968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a509e8334a912628d8b848766c311f66d51f64724f8a5cc00107852a7964205. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:56Z), 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/GBKQU2527969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289ebda9d3ab318eed153c2191324386affb97a9d09ef5eb71608adaf3ecc928. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBKQU2528009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb69e411956e0b304283240d842db2006862e1f5f2d1796aa67cd66c9eda70b7. 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/GBKQU2528010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9048bab24830e609e9770a880a182a37ba40735c4735f345f44013a9b9c4e8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBKQU2528011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbf5558440deae9082237532d0166d38abcbc7c5d18c1a9b6eec1fb187c9a23. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:36:23Z), 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/GBKQU2528012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5910ed1703b2340bdbbe41e9f205ed6746ca91b87c05379cb06a139b7aab2ef5. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/GBKQU2527974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a5422f801b9c1cf6a8b8b6fb48c567c79d15efd17010cb3c1efdd0d23595b6. 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/GBKQU2532048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5975e0e32041cb4d9f3a4349732acd4f47bc1ac7be7f72eec7fe6f593eaf2c2f. 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/GBKQU2532049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324a1c879c5b00eafdb4e8575c19f67e09495fc2652f236e4761dc2aa015af6a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBKQU2532050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9230c8f2af7c95557511ad7f66075eb53b4230dcb92600e6091e84cf9488da9c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBKQU2534547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470b0619c99a0d8af49fe2dd51fa5a0bd2b4f6d98e769d406653aeff01a2f77d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBKQU2534548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f30950a40e6c4f01dad30ca9f262bae1dd6275fc9c6f003f8a7271c3b3685b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBKQU2534544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ae8cbf3a00a3af81bf240d336578844695a8b18904acc557e2df5dc902aa9f. 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/GBKQU2534545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cc4d0ad649edbcdbc43362f0af9fe04197eb796315beb31f7bba60e57a4b9e. 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/GBKQU2534546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92914653f1849a8106f5520c9c87e8fb7f156a3f3a0dafd20e9b87c507045c1. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBKQU2554596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981c1beb1c2926002be911f98fc639d7716ee1dc22eb31f13d68b50d22c99235. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:03:58Z), 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/GBKQU2545242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42fb2a193028255c285841cf7f2961be255184bcf5594086945236d395c0113. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBKQU2554597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0723f09e94b3f24c9295ab1903ba478990290892b0553ff49c80aecba271dc4. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:35:45Z), 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/GBKQU2556488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69134da0b024e36e53e5b9b40f047f17fe26dbdece737b9bca37d56b8176f47e. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/GBKQU2570892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef68eee2f2acd2beb0b853d12f27881cf1f632457abfa65533b30b48af843a26. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBKQU2582213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdc342c79e954362aff805d14675bda5c3897f1e6be7f00d6c09afd000f1c3c. 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/GBKQU2573741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e15cc8b26a27f8af6d52a84aa5692c527f16e2d3c274acba0803b01d59aa984. 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/GBKQU2582226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067951f62aee9da5ac9942fda09d2acc2feea19dd060e7699a238dda46b781b2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBKQU2582227.