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 0xba4f4b5393ea65194c1f1433c2f935a8da53bd0e62049c8c679dcc4c203a0101. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b2d579f-f700-4a1c-b79e-2492b6e46d2e.json and https://artists.proofprofile.net/proofs/artist/5b2d579f-f700-4a1c-b79e-2492b6e46d2e.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 0x6fbb63b9c8f78387362c395b976edce16e60509db7eaf55d117ed273156d5b82. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:47:32Z), 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/USANG2182919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e2d955a660eb02b1452daa9b7fdec5733b28e0b7a245cef19c2e907fab6b20. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:05:37Z), 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/TCAFL2117789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc629cf93862f2037e8a1169e5cbd54330543b0543c6d1ab8b19a32e3ef8998fc. 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/TCAFU2164425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cec306f7005e54cf85b5c923ba220149d9adef7cff5ba5ebfca0d9324d3e9a9. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/TCAFU2164441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50ef87839599500cd7c13b1bd299248282d3d0c8e9751e867711e604f1dae4c. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TCAFU2164446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702ade355d6ea8a74df29f2d0c70a5e3a9203ef1d3569ad4c3bdd82b54c56b29. 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/TCAFU2164462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021bf22841d1719ee5b771a4b094f3d1df01ccf86ada0ea008ef97b92ac33f51. 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/TCAFU2164467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4eeeb8ea28bd701c507376362cf1b7196c5d128fd4d9ece2616c557ad8d6016. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAFZ2284934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9a784baaedae99d0471b68fdf166a7796847157e9d0c99c34f3de16da72022. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAFZ2284949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec873bb935ef6f321d4e275f25ba426656ce0921cad7f9f9f635d264a9aa569e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAGH2262669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90019d3360e25ae7b60a7d5aa798361a2553c525e4281fbaca0f1f5a07b90a26. 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/TCAGH2262689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040800a627dd285bf1f8deb4dd16e1c1922b494efb2f3917c0a64b24d150f5ea. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:06:54Z), 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/TCAGS2385808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0f41761f2961c4a016ec69242c4e300b0dbef57cfa45443fb1caf3979ba8e5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAGS2385923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf9ce451d1fd2022f756f7501af840e227fc509218c5e21ddbbe19dbc947cbb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAGS2385970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f6c86a5030fd3197b69ff1e8e60fc2daca201a213b03a7af252ae44371cb4d. 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/TCAGS2385986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0f43541cef9750af514fff5af396868bd98c74261504edc8569d943f0d9ced. 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/TCAGS2386013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76afcad8beb676b0fc5554cf7d9b4a3da5627a1f9173bc22a3b3e3f0147dfe3f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAGY2305460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa405d7308b0f8bb1bb4ca7a2720f13b64140d2cc4de798072aa540331f35bae. 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/TCAGY2315207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb561133400e4355721d2d943f96d35ef3b583a3b037c633c2126020dbb528e6a. 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/TCAHX2413407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32844055f468523f288dce1d547044a5ff4ee793dfefe3514dad9ab2e858f50. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:45:01Z), 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/TCAJB2456932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbbec023fdf1ebdc961c9d9fa4ad6f593eb651d0e98f4173d01f246f4be70a1. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCAJD2489037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1733824fb8cdd4135a6cfcc4068306be4555b2c0a056530af2812bd63fd507d3. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAJP2570148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eefc222b7b65a995dbde52af353d2c26ab81f95793827f010f37cb7056cc775. 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/TCAJQ2533593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167e349f823382e8f0ace93677664739ac29bb598cdd87db590a4cdd5dc2587a. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/TCAJR2538245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18cd52365ee9269ae1bd5618cc481a676d7c14e9a35bd8740de9569b5117824. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAJT2533881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f22d39ed30c2f6976557106845ff3b20ca5efa721cc2d78de0d4110be43071. 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/TCAJI2560682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac570ab551be3bfa763b65e1c46c9fdaaa3e4ea4b24199ec8b73b0e2d548303b. 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/TCAJU2559931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27691422c5dbeaa734a32922ef3dc7311eef7f7558b7d0590a30315ad010c542. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCAIA2445949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294e9c1464b08dd9ad5d0c95ecd522541441985fcbda55c5267329e003524152. 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/TCAFZ2284947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39079474f19ce1562885750aa2e79620a4e0f01ff9485cc023ddd63d64fd337. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAKB2500423.