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 0x511e1ac0014fd04fa30dfc00af0e508573f02ded254f1afbfb34c5ade52c6632. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37cd4497-4607-4adc-af06-1e1e7f4f6cfd.json and https://artists.proofprofile.net/proofs/artist/37cd4497-4607-4adc-af06-1e1e7f4f6cfd.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 0x2152d41bad830997d4a3e035f5dde566ac1a2be5d10a042a9d23361225b03e0b. 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/SGB502276379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a1a0f96a025184465a249b6add6b04fa0e5e2ac834747fcab51d0bc882c5d7. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:08:55Z), 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/SGB502320955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060b5ffc63b60fdefd10691a66edbed9b98c2fb6f1db2003bd852f51ababa4c2. 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/SGB502346632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1312e63c04620f8df06906e227e1a5c50e1cbb9b3831cd5f83bbe58c738bc81e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:53:57Z), 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/SGB502352112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f86f8814da6d8fb2034d1c4acfbc5afa33691ed2c8cd2bb0e06b80a3c940f29. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/SGB502272870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2db0ef3813a82bbddb8b5717577929953707c1b4a1fa8d595c24e2786e807a0. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/SGW502318551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2636595e4c2b9d2ef32f68881b4be3d388c997dce297ff1c8ceaf537b1d5444. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:56:48Z), 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/SGW502319462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693fc1178bb2d7af0ab373addf516a903ed1a73250fe1802a3d8308749700bc7. 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/SGW502328799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102d3bd613e964e6d7cba1c555718110b176b9f59aa4f061779e7c77593ab256. 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/SGW502394757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245d8bb2578189fe2b15e6105b212158f1c5ac3de8e4cd5c0d20c3fcbd3f8d75. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/SGB502388282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd62f235a871584b6dbc5e82617a1147157d41fd64497e1f9bc86678ddedc6f8. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:43:04Z), 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/GXBAV2372239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75de8012edccdf9c6862a7eb35ecff2fe11ad07840eb2fd04002d81e63dac272. 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/GXBAV2381038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4781272e0194139862c8bec7a964304bd8074126dd711792f48727509060c9. 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/GXBAV2425971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e6609844cc6ba8f22741b8823238066c18955c330ede73147f6fc286cb1c57. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:35Z), 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/SGB502482588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67b6f678637f9cbcf92ed614991e2f892c05da9c48394b513cc531c7b0a465d. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/SGB502482576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ea0a87ff226ad5aa228d1fef8ed6b532c2053bb41cc1d868110c457dddc31e. 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/SGB502478795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ab410c7ded1c9101731e041053d8174b198ffba76bcdbc387c1f3420a77cf4. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SGB502483212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d8d23a53e4062c2855eec852e5a0dcd0181a36bd5dab76f134de308e3c2802. 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/SGB502485963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d8396eed4d8156bdae3cc264729ade46494b3fd1967ab6902d8fbd3a640403. 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/SGB502494303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18595f06e2d313092177c44a80be506d51e155d7fbd2a17c47861cec0ef0be83. 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/GXD7V2380828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8316682a1d7f761933aa6650d5f4827cf1ee1413999bcab09b707437746e8202. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/GXBAV2272796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4706ad3cbe98a3ed99c641e1add3330fa58c55e9dc8ad6f6119e13daa146c2. 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/GXBAV2286496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959e9d002121b24caf7e1121ae250ff65d2019b39c0179e5992660caeba38a5e. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/GXD7V2235646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6511f5222e8a5b5ea1409f2d4201f1ec3813cbeff775414cee7a33f5e47ca068. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:42:58Z), 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/GXD7V2263940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e0371ee52fcf435e246ad47f7230300bf93bd3b74c6227f169f6826e3c627f. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/GXD7V2283393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12913611e31f633892e751337784e1105f45303703595bd410c195b4ce095827. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/AEA3A2441972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0388dcf48ba96b47b75d0d3585e22eefd92630aa77f247ba1c483fbff129ee. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:39:09Z), 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/AEA3A2480559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c16c8fd928318a93a13d8c9cf84b05584060555d17ab2ea3650e664b8ba0cae. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/AEA3A2369179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7920bc4a82c1d5d525a2d34b18b634416668b36d4886791ddc5dba1971b5a03d. 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/GXD7G2551759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2204688347fa4f447f24c4bc0038b7aedf5c578394c060a102404b38d3f2fdb8. 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/AEA3A2595360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f57a6c64be900aeec5c68ebe35b4220697c8ab6bfd58f15ab243d12c5790ca2. 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/DGA052561766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83091b0f42b7e367bd32e454661d0d23a4f50e68262ae9990198a3d574901f9. 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/QT5M42581232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ee489dbb18e1ee3dda155ab902d48778528195c648bd97024e4bb9f6017743. 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/QT5M42511128.