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 0x22a6a4ff873c74450b3759fc01bae2ae16f75748baeb115f089524b7114d7e11. 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/4dab91cd-26de-4232-b5f2-a48d436586b7.json and https://artists.proofprofile.net/proofs/artist/4dab91cd-26de-4232-b5f2-a48d436586b7.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 0x8645ac5680339a231d49e8e3090b68e42cd49d05d52aa8bfe553d3d0a2bae441. 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/DELJ81930696.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed257aaf23130a7e86e3613cafaa01d942e6f81f9df88e0f5dde8111a123a6ea. 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/DEZC62156939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59cd035439613be4f98a829698088e03a261ff6536653a94dde51f32b882793. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEZC62270028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106022388602e7a0fa1b2ea4abc0be999b303f0efe46b78f1a53df90af821b81. 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/DEZC62254481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb335747c32b2dcaa0c7de7f2064dea06fc3f7903e894f96388bfce641841dd66. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:48:48Z), 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/DEZC62130695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34127373f3ee4cd4d97efdcd8d98863cda8f7cd37385d74ddbaf2e359ef27b6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEZC62138270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4800d0706bb57a0e4bd47da735fa86be80aae886daab1e1543a6eda9f4eed83f. 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/CH7812220218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a53178511ccd20bd27dd507f5f96b6bbb8e9630174c1be10469aaf4bb600d82. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/CH7812345993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36f78b280b208871e276a80287f427bd78e5779c4c5e14cf571dcdb00a976de. 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/DEZC62362538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3371f65ee148036fb80fc0af518db6cde3d2fac6fc67da87c048107c3bc58e9f. 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/DEZC62358322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211423d5b9877a12d8d6cd93e97df661f6fa16b4eb0dcc4982464f07ce7c6ecd. 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/DEZC62361358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978d2fcbfdd2a0dd0f8cfb03fd74540b8ae98f0c5a1d1da84b938b2b76edfb90. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/DEZC62368337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e05b62b956fd9e7b244a8fe751debc39617737ab1912c511975a5353e64e8f9. 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/DEZC62368338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa242c4b69855577f5eb47e9e17b09127168c76fdb8361f1d73fd457fb7ddb08b. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:10:37Z), 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/CH7812360356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8893ec4526c84e4d2b6e7f7e93f2752cb2426f09f114eaf0bfe461c86ad9f7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEZC62371175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7002ac8ce7ec60caff7a0b9f208f1ec1fb6061e82cac3e2d621f6ea3c626a853. 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/TCAHX2432143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0fcc4e92697370b6974d6c5946dac73c08070daa0200809d646d5ad7d422fc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:03:25Z), 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/TCAHW2410432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28bfca463e1059726f050837d722e24b8affb6bc263c115912d4b04b8fa6d18. 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/TCAHW2410526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664927aa021aaae232f28ef6519fc4ffe46c2b8f059018434595e55b4cf239c8. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:48:11Z), 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/TCAIE2469566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cde52e97f71691a2209afc56462dbcc8835d540dba40fe3cec02f0d614db36. 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/TCAIC2483740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7eedae027c946549b9af6ba0c0186826aea10749f49f5f88bba0677df15777. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:11Z), 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/TCAIB2493107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cfe1e8665da5503b26d3ad1763e122c0331ef3fdae8b938fe8a74faa97475a. 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/TCAIP2456794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6302026e41da6ae0532e40e8a3225baccaf7e14a747db94ff6700ae7532da2. 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/TCAJA2481269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d537085aaa581dc60e09ceba5d88ae6da680ab582a2a7c3f956bf23f1941f1. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:19:54Z), 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/TCAIY2480239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa1423e213796a8603c72b740927cbecd71e293cba6b4f70dc1546ceb411548. 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/TCAJB2420902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a65e2680ae3145875dc01f5de8e8f8d851e28c5a3286aef64f1ea5b0f677d9. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/TCAJF2521856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9176eaac6cca75838d446ccfe0f5b8ba2196f644e0f9f54cf6ff56dbed8066eb. 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/TCAJF2522212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379ac4325e3f307f4cc8b6ab32bd099921554cb43a3b1eb0d5c94b9b5474d857. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJH2516560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12d6a75c8ac79082b074b4b30afcc1b98c0ba1851e63977025a0b32645a3366. 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/CH7812533930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a7fdc8ae16292bdb37148b4766df21be695150f788c48390ed3d95889f5d6d. 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/TCAJK2514190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe0f401844b87ccbf69c4adc199c3f0e397272c2a96444c38de1f5e3503c11b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/TCAJJ2506290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920d0c858d321bc0e7cd150de893b5f07b1c3faad1cdf35d3c0574b9aab7ee6d. 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/TCAJJ2506298.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ee89bdbda56b738c2ecea0869a4faaae1c3385e25b9849b9cf63c307cfff53. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT65Y2598062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047d24eb60a3fbbf0500cfd822bb12bedb951cf50e710db48707e85ea2b28d94. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:15:23Z), 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/QT6632504479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9993d3941d5b8c0fb61a9140d86fa104a69381962f1328f8ef5ad95a2c4ea851. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEVY81700701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed6e0081c02e4c9fbdb12f13df4840d1f7d90be980ec1c98cb56c6379972996. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CH7811924362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cab733f76ad6a4b9c2b86e26e7207c0c068d0f30daebb67f257aa824001702. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DELV41600017.