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 0xfd91ee9b40c168827753a22f55c620c90ef538f77ebb4aa89cc4664a6f77de2e. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/258bb357-09e5-4ac5-9762-770bf4eef156.json and https://artists.proofprofile.net/proofs/artist/258bb357-09e5-4ac5-9762-770bf4eef156.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 0x0182388d49d87a3978829c1f76355b351976db1968f40fc1a5e3d0b99c85bec2. 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/PLF242211689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2325912533fbe31d88a82e430eb09a1bff98172f0bab624d66e33852e039b7c. 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/PLF242211690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ee2e8ecd00cf3f569410a5aa0c7725ec97b5fb81b70305530f369698275f41. 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/PLF242211691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440924d4d9b43b1a62d1c787c3eda88690d05467d4f793ab6ad8d2bc992c3d2e. 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/PLF242211687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee98bf1a2969f15e5f0dd37d14ea81b0000543047786e6b052d5600e76eb2155. 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/PLF242211688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2365019ba2bd3af704d6a5f5a40a4137c0f737e2b062ab15661506e378b47aa3. 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/PLF242211692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd0c9b3497fdcfaa5cafa4909fe1e01f19d40b0d30b9d3daf0b0030336e8b2a. 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/PLF242211693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5aae696c6d8eecc6c613648409d6c4d6ad88f4e55481f98fe38bd5076b7111. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/PLF242211694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7190169464fd0b19b36c17e82ad44f3bc1a4301c90efdf3d6dcc9a17095b540a. 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/PLF242211695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4683e067cacc24b42b097f8abf2c30f687bdfc1702b081158766be71926a3ffc. 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/PLF242211423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7747d5a02f4cb1689794781549ff9c53af114750db5f698c770c904910fa9a5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLF242211696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe265b1bc3d019e70c154904ba481b7932129e8b2bf0bb2428f76f0bb50450bb5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLF242211513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f50644ab05da648d1360b7f2ae927a5c93d0ed3d460782b260e34e9e2a90ed. 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/PLF242211697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaea0a7f5d6b49c0452189a36a2e9dfa3e626b17ff24b061da7d462d4ce8053. 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/PLF242211698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea976296b32c2d16c28d8198349101e74e288766fe4da88fdd0f4b2b46d33a89. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLF242211699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf543f5fc2d613a2ce0899ed869376d57ca9625a9adbdceed95df835d08a68d7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLF242211620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2f572bd708837e0705cb3de012e0db1e29fff8edb64affc761619d992ba98c. 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/PLF242211700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff0b25949e40bfbc1f17fd999fac7e7bc4a2b944d4199c8da6ec2e792754edb. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/PLF242413538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bf21e43a8edd1b5f7a136e8d7182a667f0f093e7790cbf8dec59980b9de185. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PLF242413539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d623bcf8f2c28c5a711c2ad3de37ab6c5bca1803ca19f1551fba3bdff26437. 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/PLF242413540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16faf0e97ec3174c4ce6f0ac20ece1a97b70e67a03f623c9ddcdf04c61e2835. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA72447225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd210d5efc64e76dd33ca82bd5a6343bdaeb4c423ec8028f0bb00a53bc29cb95. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA72447226.
Ballady o kurde życiu, część pierwsza albo ostatnia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c66087aced204f03465b1c83da45da91e17967f2b483c8c9ebe71dd05ebe52. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PL57G2000253.