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 0xe837e3f79553753a33343073cdb9cba11517f58d065aa1f67c0370817c4dee4f. 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/5f197a9f-a753-439e-a469-bdd3132c4d39.json and https://artists.proofprofile.net/proofs/artist/5f197a9f-a753-439e-a469-bdd3132c4d39.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 0x78dc10a762425e58be4e97ba934c408dee15d78c736a676cd02bd91046750117. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QM2PV1739942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ed086d2f658ffeb68d1f08492ffdab20d8eed7de81090cab32b09bb04cabe3. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QM2PV1739948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b04ffa193ef29b5a71be1462f5acc2c00450c66eb80675518b581b9d18800b. 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/QM2PV1739949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecb90de389a2287208103262cfea6d8a791405fc41b35196ef3b4cc3ccbac5f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:36:19Z), 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/QM2PV1739951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb089253652d0c7765e9947bfb5d05ce8abc53a8c77a0d9a8fe9febd51b56da0c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:52:14Z), 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/QZ9JZ1796558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e8cbafc8df286aa2e97387df7ee748b051b71fed457860eb6c15b8aa40bd8e. 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/QZ9JZ1799989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1732e365c285a2b4ab4b7512374c9ed11e880135be00eb5bb9038fd633464b7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZAPG1703487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0443dc61bc6b86255cce4ff0ef6b60abc0d7658bcb37702135df73f7c58b106. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZAPG1703495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c366a54381fda4bcf60d8ddafe307a18abcda148692a8b764bcb746e66e021. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZAPG1703498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda94dbb08ec778b702c19f894e3a50eacf4cab2533a507175443c8ee0e765ecc. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZAPG1740231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cea3c25d87128873f6b116203ff5abb0deeb727a18734be1fa6fd1ce033499b. 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/QZAPG1740232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9073d7b35b721d61bab052a1f2d8b2b62577a3c38e5bed7f693bd7878b25dd6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZAPG1740233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22a3868b8691eb303181eceddc83d6f21e958b87e0802748cb48c705c2b989a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:33:53Z), 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/QZAPG1740250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f95d542eadca597c43801fee49ecaa33673ee573484de6757eddab2aec8736. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZES51869568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c26b87ecf2ac38619b9ecd1a9a41be5d73456e3839a9cb7db8ed94294affbf. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:36:59Z), 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/QZHN31922884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf77092acf28515ed3e68ee7e94516981d7abb8d25a5b42de4a567e9c437aaa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA82076630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7262e4cd79101e5f9ff085468063825e97ebf0a655552b147573f21a04d4b16d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6P2053012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cac6d6fd10a7d3e729c76a74237115bc5cb307ef4cb59209aaa616ea5c2361. 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/QZMEN2024998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997c908cab4b907c7b640e66267055adf33734f19fa1a3657ccf87413840c747. 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/QZFZ72145998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26799cc5bea0ec5ad8b9e8dee6ac973f5f695f1be99ceb1e48a6f9676597ac11. 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/QZHNA2177113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd266d65c807d4f4b16946dc2f6d144cfa7c91dd0f30993e6d36184907ce63fd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZMEP2126747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5e54f4f2757ca6124591103c589686b2f930d580e378b50f78e60af4565411. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZNWX2194840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374074c21cc21e9cc82e75932a8542310ee63bc225af4b6281428004417d9206. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZRP42181164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659838ea5cd4835620c2c04535e50d73d9fa735582dcead89b1defd7e1ef7ce0. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZHN72272424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677d8f7766a2e53f63afda8a02e8f308a84f3a9961d80e359fb5224111932e70. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZHNA2253126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190beb2599d32b95558f206430627ae1359d9610177b56a32e524d6072e8fa03. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:54:32Z), 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/QZK6P2212512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd569545c12c903df7fd656c5b94b70dd5d9e1cb31d0351f81a97bff087a9548. 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/QZES52322499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a21379aa4719ebd043cf18b5b0b6c4a8dd3a7f6b029d217b4eef5887962cdf1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZES82347140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d361bd37dee5b6c6274f7919abdbe8dc5a70907b7d0563180f92571378fa587. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN52330142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a21379aa4719ebd043cf18b5b0b6c4a8dd3a7f6b029d217b4eef5887962cdf1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES82347140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa584d3a4a9e8616cdd0035254b1937de37dbc9eb7a806d83d88b97873aac4b55. 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/QZHN92389092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28ce1e2087810cc6100797dc493f342cdcda90e279269d55f804bb57eb9cd39. 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/QZK6M2331195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c68fbd90de74e44cee36795b5799e05f3bd067366bfe9a1940c999b00d26033. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZMEN2372338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3850e09da1fa4c3ea390613b4ba266343a38d6ac40d7481ea3d9d439098b7b1c. 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/QZTBF2383336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824445fff59ca2b2255cb08bd5c2eb433cdceb693c6d85f223ff960aa0c9726f. 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/QZDA72428012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13feee79a6d9d8547245d005cf43ac21e7ccab4a87048f0a0159aec5f144432. 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/QZZ7M2570976.