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 0xd492bb8f17c2c9033a074e37a1e691a9301bc15b9e8141b2e2c147385ea0b544. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/911333db-ea4f-45a1-ab7c-1752ec1c79cf.json and https://artists.proofprofile.net/proofs/artist/911333db-ea4f-45a1-ab7c-1752ec1c79cf.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 0x1588467f9b4f94a86b981ce71aba829793d6b5960d6e024ad53e207a2b05f67a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:04Z), 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/FI82V1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b11d644d4d3690831af77bbdf51d59fffea16113779fedebdc73a8bb437b877. 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/FI82V1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2df7bc0bb67db949cebb021506b4d67056db9bb42f6fc3c6f6b0bab76f68db7. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/FI82V1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c90f681c96ce7e3bb8ae18e1f5270cd6ed262a288d7ad378e5371e771a4371. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CACWV1890271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9ac888d6aa7a65a8c1676103d40a50cad3c3a19772dc639d51a9256e016ee1. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/CACWV1890183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e101c531b8249e35f2fb8c175cc8795a92eb31994931231cc7ee82a0e0894f. 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/CACWV1890179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418ee50ddbde05229d5eab2c1b4c46882972e6bf41f94b65a30e5c6a56f0b29f. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/CACWV1890165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b64fbb3545250ea0d22d797dfe690cb820d53c9fd417eeed1c68d67519bb75a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/CACWV1890177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252603156fe96f1d85e5b8ff939f6726daf8295c0b22e7dda0acf0b697e991c0. 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/CAENV2079784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9e1b76596e89531f26bb1f43795749ceec90037e518426c00ccdcbddcf2327. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FI82V2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295fe6ae36fb8de3c2e0b59909d9c426cc29e75ea7212392d7b748f6f417f3f3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:40:56Z), 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/FI82V2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb78a2586241dc875569eda8ac21c57281f222b9fb2a4717f88e36f2346791d. 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/FI82V2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe73b3865749291f28dd6e0502016ebd189683f2127c6e8bc34b5fabb1e1449. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FI82V2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46626a170d548e5e04fe2faa38537812626be235e82e1c31d65d33ac6a303a56. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:41:47Z), 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/FI82V2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b733c43a016f595617e69e4ff39f5362bb7dc9aa7bfce152c48071ca00ee97. 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/FI82V2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34309f82214dcdfcf21dfa4a7b3be5c9fed61ea8fbd3aaec264d17b861ff60de. 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/FI82V2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671b2a6c43a56aac4be2afe0bd3bc4526d978a908b0bb14945980286727aaa98. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FI82V2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1fdc7c7207438b495c0de57d5c7c840a0871ed406610de3c6514625e068288. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:02:51Z), 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/FI82V2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2f5165fdcfe7d1c7145630f447d942a41e88cdf677c67d2ef047a6ffa2f2d1. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:41:07Z), 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/FI82V2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7159cc6a11a821862fea99d8c9ba10c348c604e61819d3b67bacf9a8c143c53. 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/FI82V2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c09c3643957e5f4645b9d363af38b086c82aa9a07a1d1abe5fb0963d24fe832. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:20:10Z), 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/FI82V2500010.