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 0x0abdf72d1aaa308a7b811b11481ef7cc12aeeacb5b9eea99f93fa2ba7e833ca5. 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/9a38ab61-4299-4995-9537-e772c2813ff0.json and https://artists.proofprofile.net/proofs/artist/9a38ab61-4299-4995-9537-e772c2813ff0.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 0x272144e301af320945dbfb33caa5cf063d0f3d0452feec3959cc4b7e3e8826f9. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/QM6MZ1967751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61e6a3f437a0cfff1fec7664eb2c0592b626dd0f98ddc6254d2cdd0054004a1. 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/QM6MZ1969043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d388ec53512c79f5847bba1cdb763a6ff106c6ad9ace03d63b522934bc1b126. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QM6MZ1969070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854eaa89a02e5dc21d17b9c239b53b888e89fa0a89ea496e8e40a8fb4aa6f5f0. 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/QM6MZ1969074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b929065efc68a2e8c319b1ea34ae6fe07871aa7d010c8bc58925570d432d24. 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/QM6MZ1969090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e1ae97dd8c6f8e47cfc848b4f183fcd242b3ac66f9b2aae4d446d9ca701fd0. 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/QM6MZ1970247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01eac1fd92b486faca0548a26aa069cb7b7d56ac48cd0054c4c82a08d93e88cc. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM6MZ1970257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492cf6e89d7cdf2ff9a1d56b2b7dc18278264a5ba487e13cfc6a32d3841652ee. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM6MZ1970260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4623f99804c653b1863ca43849271f57dddb4f3a56646b93c12392e158af98ef. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QM6MZ1970277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa6ad3c7ba0397c6f9ed11f607c24426fb49eb1ba02cf315d3be6677eb31cee. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QM6MZ1970283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b75d2c659c2e601088637ccbb2b7dd80c5439dee9065887be7639420793b7e6. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QM6MZ1970284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccea1ea7441919b4c930c61d33828abdc5431c2dc33d2b35967c11f54f5a83ea. Chain 2 (Bitcoin): anchored in block 957737 (2026-07-12T18:02:09Z), 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/QM6MZ1970286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e8b8b88ea137266e70017b2860846fae5dae2f72e1bfee16cf44d7824a1d88. 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/QM6MZ1967638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3cd356cfc2c106bf0eb969b662530294fc2f2024cd4ecc2d02a319e5e96a74. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QM6MZ1967641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd944d5606ecd87d0b6aadd2a452901634d7b9cc7431c69c1629476814b6e75cb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM6MZ1967642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d88667baecfbd633fde7408704e575dc25d6a62646e5e3d4fb664434d0e5ae. 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/QM6MZ1967652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd60c5b7a2db92037449685e28dc219f00de2c088014cc148ae8beab0cd06b2. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QM6MZ1967656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0aeaee3dc7cf0e5306a3a2f478616351098b3b83d133782c0d9d647fffeed44. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM6MZ1967658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e6286228cc363ce6dd18b2d4fc3da3e61b12ecec12625c086c48763a41fe64. 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/QM6MZ1969166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8d70aa6b2e7f74249a7116bff7450075c9f1d5ba02df88b28b8a0268017218. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QM6MZ1967447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f2f0b1c5a427992b4f4676ba28bfe707b690c7f6ca53ad3f3fa10b4b2070b4. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QM6MZ1967973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bca4065015d9c8fde9a3106b1d229649bd1b96fd71821a9a781497706dd3f51. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:10:51Z), 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/QMFME2084311.