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 0x25147fd00f87362b8c4752d8b76455a55639e8206f68591b6fd6ab54ee2a8d19. 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/f6388baa-92a4-4c22-9264-01719f15ec4d.json and https://artists.proofprofile.net/proofs/artist/f6388baa-92a4-4c22-9264-01719f15ec4d.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 0x721f4854c666b7eafc4d0f8930be59cb8559cb541765cefd2e76745c3150d40c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/SMRUS0058770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009825d78a8db895bbbfa22d53d9a03d1cc8ba9fd0d9e000076af26491636637. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/SMRUS0058772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84d219f68ab3d579322c3d9c8140f1078e8c2b3260b9e2e1e724bfc1e2a19ec. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SMRUS0058744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8c078c8d3829f6aae62f462fb89dc731b76c5709d83b40c1ab122ad4f9ec65. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/SMRUS0058749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373bc3081035eb958797561d588e113cc26d4188f9d848be5767f525755e9df8. 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/SMRUS0058754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cad128ee7f25bc8b5c37f38250cf99709610915060db339e452294ddce3f6d. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/SMRUS0058758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f58ebe0920cbe9da256863afced227425d1bb813031c22ede1feba6dde5019. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:27:28Z), 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/SMRUS0058764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2489dd85988f99e7d09a1d595dedbb5d9c6834487e7c90b3fc9b30645aaed5de. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/SMRUS0058768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48486dfc1b4547e57b6c216ed003e4b5b0653d82c1eef67e02e427ad31ecef8d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SMRUS0071070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215620789e6aeebf417029af7b94482a207322a1d0c1db073fe822ba57cacb3b. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/SMRUS0071071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2c9e548798c137195483da7ea4311857dce0e8fd17f42a6ebb2372f9021ce0. 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/SMRUS0071072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edca63227b1037e19acf88f2f5731f02a8e0d4d308b51d28075fd9bd10f6988. 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/SMRUS0071076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3efe4c4751006f5d7c2040c6fb509edddc2e9d9624218cb9d9fd90cab9b01ae. 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/SMRUS0071082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d89ae378d9588a34131f82ed6de0a186042463128dcfd52f4af4dd3f9c3b37. 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/SMRUS0071086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a45719e3cefe1e8e62e9157a28688a79659c7ad1f270893189768c848ff8356. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SMRUS0071089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a79647f375526b57743a1e5cc0b3c71d5f0d9af92b8c0101dc013e6eea33f6e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SMRUS0071097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cf4636ca06866d21dc163d9ab18e05fe0e0136275bc9c4038c8da3627f63ce. 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/SMRUS0071101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0290a62f567649184de8c9d5102cd314cf2dd3ac18b6957af3309cbcdfcde07d. 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/SMRUS0071104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e73af22a75279ebe3210f687a387dd0fb44d8e9bdb48552c19b262c83a8f22. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:56:06Z), 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/SMRUS0071106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdace7bed17840e2537199e9653d92b033b4e27962e4c909b889b7e3431c01fff. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/SMRUS0071111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda66ad76171bdb49a16ee6e9a458a66e5fe5b955c6cde2418cc8fbcf19937252. 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/SMRUS0071117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa345495638dea161db86c4182e789e7c71c92f7f59916f58fc7d38eda0de0ea0. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:20:39Z), 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/SMRUS0071118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebf7d60e59f6672a6daf109a3b6648621a03d1c9df2cecc558f962dbcfd61d6. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SMRUS0071416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa0bc9816eec1f1811325af69216cfc5bad08e45f1402b5dff6bdb8e38ee5d9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SMRUS0071419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4195928b00176e4730a4732f0b79c1690b6880e9af666f04dc500562dc59a7a. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/SMRUS0071420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa300fe8b2c2cbcef3d88e409e0110bab62c0f39ebbbe584fb8ff047789c4c985. 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/SMRUS0071422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3aba3defab83c58022b3932bad573044abc6c9311b0703add5f0b4a097c76e6. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/RUA1D2570851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576de0a097daf5e79f911ae22a2d3201a32428259e0df700113b9a6ea3453e9c. 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/RUA1D2570852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37be826834842a889b252605446a3530a03b61cea52e38aed71464b94443b15. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/RUA1D2570853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09fb0f9d1160be4e5df236c28c70383a8ce9e5578569efb87e9bd26f4864ba4. 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/RUA1D2570854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2053b8e1b13bd90c9707270e9d6f85a630a2c52ada7fb0139e7133c7bfd1dbb. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/RUA1D2570855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bf89a5f27fa54b13babdeab314d37b67422a22967dddcb01787929ece1e2e6. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/RUA1D2570856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206bd602092f0f7eab174041866f79298ba7ec0203ed16d243a1fa26e43822d9. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:04:10Z), 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/RUA1D2570857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d808aefbfe55c63083ead6a94ec246e545e2ca559e9080c8de7c2064ba589d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:55:46Z), 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/RUA1D2570858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fd1667c1d3f14f553b1a9a8fad3478a29fede9db6665317fdfd4b8afc6fda0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:43:05Z), 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/RUA1D2570861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062c5b8635e28030357ebc32f8eed487c37f66696d1a77e14598196845c7b8a5. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/RUA1D2570830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b5f7b749b504d9dec0bece7d0a274014c110e05934ad4915dc6d06fdad9e2d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:04:37Z), 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/RUA1D2570831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3508db711ee7aec5a1c9f7c7ac985107e54ea5534e43e4b87a4ee80b53599404. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:06:37Z), 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/RUA1D2570832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36428be69f8f36ed98228788c1e9df7c09aa603f47ed7ea9d2a3725d5ffaa398. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:57:13Z), 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/RUA1D2570834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0872575f153ab25c8f05ea1bebb74b238f49b4ed96b8df2bff8f12758d987f0c. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/RUA1D2570835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a231eb96dbd8c2d435109ab8ff4e241bbd11f065d129301206f0c0662acec0. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:27:12Z), 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/RUA1D2570838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52485f38aa96034a3e5071c64c1fffa10a52536f6d4043b17c2b67a7bdee5906. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/RUA1D2570842.