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 0x0d7ba1cb3a7a013dfef923c70616f3239acdc2e2630d67e54c117f2c323645d2. 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/48773f52-3d3c-4002-a120-494b5e85ed12.json and https://artists.proofprofile.net/proofs/artist/48773f52-3d3c-4002-a120-494b5e85ed12.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 0x05f7684f206946987ae1c0203b30b141e9701f07c0ef466c41ecdd920a72b7aa. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:03Z), 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/UKR6V2358012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59eee3ae4adcb2d20409f116d6c1293be507019c5ec20eb6567dc3608503de58. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:35Z), 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/UKR6V2358793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c513fad46311c06f4c0a804ee25938f15818f55e4f74fc3059fd248494350e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:49:42Z), 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/UKR6V2358731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0835a2e4ed0b6d40e107452c58770a12a237b4bf5f897eb02d0f0f3dd99db08. 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/UKR6V2358054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe982f231327e9ea3a84a8dcf5acf27e1622193ecca287188858b185ded271687. 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/UKR6V2358540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e529a84abceda73c99b74634912b43eb83062b15cd84817d4d20e3c196992de. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:27Z), 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/UKR6V2358537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f67f03119ac7b5bc9912eb053ba711cfd01649a09cf61c154c1b4e012ee3c4. 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/UKR6V2358538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4770f176a9e77913013faf3a1df99dd753cc33ed9f1c4d60bceb6ae7cba205a5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:01Z), 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/UKR6V2358990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61456d184d19602df2081f5cad896ce7032386badce25978b14689489b8e2757. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/UKR6V2358842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2471eb40330b98d6b5e822b413419b2a3c0a4e8f2e9632e49e9a824a3307412a. 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/UKR6V2358087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c655cd26c71696aee92ad530d2b959fef4991fab8f1459bd30e8ffef9838cb4. 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/UKR6V2358068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88556ce2e4981577253d5688dd6e11aba4603fc6efbd62d46359afabc8639b72. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:12:14Z), 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/UKR6V2358321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934aa173a0b7512fd3ab27bc2025a3896c23a0e67d5b6b384521f59e9154cfa7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:54:04Z), 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/UKR6V2358014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5dfae9a7e2245aa88bad4a2bf9d6df2cf9e87dcb0c316321f319eed895e1cc6. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/UKR6V2358020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086706a4e841ad9b850fb37e9391d1ac4e80bc19bc37092b228efb999da08e6f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/UKR6V2358530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec9b168619e06f1f3ff174cb0d2c544b88eb2d05534d1fcb5290296eae322c5. 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/UKR6V2358955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e773a51528c3bfc9aa0a635acb76d8716951420b292f4b0049627a0ff3e3a0. 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/UKR6V2358943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8568999b8b7d2044c07db9ee9fd6f8fbd01808f58179e4c3ca9e61c4f9c30e04. 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/UKR6V2358718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa179d4f1b93e6f47a3bad4de7fe54cd973ea4183141b71065f86450c49b11d5c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UKR6V2358075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8c5386e541df6b30e09f40f695e18b641e61d6ccb962b30dd97d1b66bdf3fb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:04:04Z), 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/UKR6V2359423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf047e53c6c1735a1113c0f7380af47f3175d0662bad435c3a489413c5f9f5d03. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:22:18Z), 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/UKR6V2358713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3e4ced9b0f81f17c8834ccaab0a6dbf6f3aadbba1ab91e7f689eaf255fac4b. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:38:48Z), 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/UKR6V2358735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec59a836eb0305260fcf0afcd0675551bc432c2e9858423bbc580a415d152e32. 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/UKR6V2359211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4c188fbb2b141ad04d6420417376f765f53a6aa4a903143698b677d4202307. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/UKR6V2359216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb8aef73f3941a9b1f1d6f57a627c9957c1e66a8fa5a358ee6d0e59f7322c7a. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:02:06Z), 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/GXBNP2446491.