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 0xfe6167aba0f271ab47de3896516a76ee0f1e2da20cebad6b26ad8d6a4230bcfa. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de430ac7-0c42-4ea1-97c3-d36202e23f0d.json and https://artists.proofprofile.net/proofs/artist/de430ac7-0c42-4ea1-97c3-d36202e23f0d.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 0x6fb115d206d1f1e307475a996f901478cf619ea12cba2e64c3af27076c49863f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE5BU2101551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa8b5bdaaea55afa42053cfd76610110f0e876b6edda26f7be650f60fe11126. 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/SE5BU2107298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f47e87ae5c06fcdab47d5da82a325b3c09e6753f9a55feed28f08c0f00d576b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:22:38Z), 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/SE5BU2105258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905489b12526f6b6128f2c4042c95d45f6ade9481773fb41f9fbfa6ce23fd932. 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/SE5BU2105195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e264ef5f9acf10482f8a31957d5c2199c88a7645a60296ea1ef0c9276652f0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:27:31Z), 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/SE6TI2001312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a478bd7ca12c13190a9571313fb028f5b2fad67238e0f1e21ecb2484aa8867b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SE6TI2039360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19e0d50706576f0b9787a8fb8e1e0dc7cc1732c4a651cfacbff808716878a91. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:37:10Z), 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/SE6SA2175982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb419f717849759553f50898da6e7b817d5dc36ed02f3b7203e18bb8fad3d989f. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:43:01Z), 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/SE6XW2103543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e88dde45cdd5781cc6daa1f53c5cbace40370ae9a526467b821167e02b4866. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SE6XW2115338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d589949a8803fe1c9417e4d7571660c74344d50de96d740bb6d6b78c0976c99. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/SE6I32264516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3205c630fc9ea6d74f3aa2e5e1232c372c5785737d4a5a693720211c70210d8. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/SE6QE2233036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7de8e4d7b5abee931fa1e68f78834c209ab02d81ceb291470b1fc6dac3e65c. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:30:52Z), 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/SE6SA2204461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b6a82f9de164e6c23cf6c52d270753df166ee51ec751322f654bd44607430f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE6XW2232867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e582789ca21a4459805a35e0f8e170388f7eeb8a54838247ab0577d2732b0a2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SE6XY2515489.