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 0x15d31d8d8fca277ff575f75930e6b5765883a92c1833ace1eb385dcad50e9064. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3b422f1-6887-4b98-8300-3132a1c10601.json and https://artists.proofprofile.net/proofs/artist/b3b422f1-6887-4b98-8300-3132a1c10601.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 0x5dde2857ba642ce34a7aa1d21d84cfe0075b5318b533c96ea20ef9e6dde3a58f. 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/KRA381702395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3210694d4c1e6d5d2254235a67b0a17ac9560fb707671b613126a650a081afca. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:05:35Z), 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/KRA381702396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad20818f78e82eae020186a303e495118600c7fbb670a8e1aec5cb6a996e7cf. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/KRA381703061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53681863705b24bc4109fcff069c43e11af224d7398b40594dbb00957b7d4c2. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:39:21Z), 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/KRA381703064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9393f77f3f3680e5e5f2fdf80fe68bdda91e3978f4f96017bb9d1e344fdd2490. 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/KRA381703066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8a972cc7ac79f21068f70d5bc65bbb02f464e7ebb84015b7cb20864e88bf11. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/KRA381704910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff2170d4af783039fcc4666eaffa6695caf22b868de95b2d025f87e462de684. 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/KRA381704911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dde2857ba642ce34a7aa1d21d84cfe0075b5318b533c96ea20ef9e6dde3a58f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/KRA381702395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3210694d4c1e6d5d2254235a67b0a17ac9560fb707671b613126a650a081afca. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/KRA381702396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1618d290b2c526e749297667909ae6182daa67c0b61aa0f26a8b9ceb2cdd52ed. 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/KRA381702397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad20818f78e82eae020186a303e495118600c7fbb670a8e1aec5cb6a996e7cf. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:45Z), 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/KRA381703061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53681863705b24bc4109fcff069c43e11af224d7398b40594dbb00957b7d4c2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/KRA381703064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310dc5b03396a38ef1f458a89eb671dd5bf68d8bf783f7d2ded117f1ebe6a065. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/KRA381703065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9393f77f3f3680e5e5f2fdf80fe68bdda91e3978f4f96017bb9d1e344fdd2490. 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/KRA381703066.