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 0x3b4f31820593e2cf8677023d15a0802b992caee31dda31a68f0de108338c295a. 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/d5cb651c-75d5-4abd-8054-fda2ef0fb91a.json and https://artists.proofprofile.net/proofs/artist/d5cb651c-75d5-4abd-8054-fda2ef0fb91a.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 0xd7f03b427dba169b33ee8845da1d7189229efa1432645dbda59137f24afc7024. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAJE2556551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f509f657f79f1370dd6209a4f368c6ac710efe05ea19c83a5890bb0e5d38022. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCAJE2556567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb759f714211b208801206420c9b25afc0840f13fa654cb3e256f0b2f1ff2ded. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/TCAJE2556577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad4ef1b2ab041d03c6a64935c3acffc4b72fbea8a1ef9678b3b438a21603d57. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/TCAJE2556590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3bb3fbc3a28b84a10d25e48e10043282021583d119457237e790b209a49954. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAJE2556596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888e781430680f0cab57dc6c70acb62de8a071aef1e363612ac38587951fb60d. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAJE2556919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7b86dfefba3003fbfd97c113444f2bb81eb407cb3e786038af55f151426d34. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJE2556932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44535582528b481384dba5d02e9e28a6f60b5eadff27660fa99df55aa24afb8. 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/TCAJE2556943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed90267e90d8aa6ece9d25dad41b4a24f1cf20d8c0cee75aa18222d720e56031. 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/TCAJE2556953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8125420ba898261fb3c9f28bb90ee36e75787e374dbb393a75098fbe050d5ef8. 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/TCAJE2556959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a959349eb77c39ae40017f6df0373acb08af11a8a5d855a2c0ee43225c3afdb. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAJE2556966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1672f967da7b0d61d81591ab24b2c5e859c045abee223c634abe37f9a9d3d6f. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/TCAJE2556973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67020b32c1388ea3372a2e8412c702cb40218e87135d349bab6f185609ac564c. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAJE2556979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88141bd506cf7bf328ac71e40aee3252c2ad4f3edf46d7f27fe937b2b627267f. 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/TCAJE2556985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa208781f1ddeb1710bd10adf5c2bf5d4a4643f11ddadc52b0c94f8f7b40c2a. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAJE2556988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c553fd70d4c1622dc2c79b01a61c299f76b54ce60d0cee7955448bc33357e5. 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/TCAJG2534175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecf787d4de640f61d17959d478841f890e7af44c2d25414f31fab9738081d09. 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/TCAJG2534189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf336ef2af67ea54070b8186b12e664a56e56313131a59d1e5e8168105cd90175. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:52:05Z), 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/TCAJG2534197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8960ee1885780d39d3163a0dc736d65dcc5809dd51de363bd0bf15ce9469609. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAJG2534205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab16cc8fddf81b8d74bffc6a2d2dd68597f8edbe7cf9c297a9156ad957c0b1c6. 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/TCAJG2534208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3293653e76b064749f5af7940b8c1d51fe1a78b28886b107b01179b731aca812. 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/TCAJG2534211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efc8478b1ab86a944016e6c070bb75838abf253824c415b3826d99e5249deb3. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCAJG2534214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f97d94c978865162118918c9a4dbba5e836b0e93b29490abeedef8abfc500f4. 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/TCAJG2534219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8922ef6f3564b8f594aa2401a485992991b14b17e91ab9e3d871c48170550863. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/TCAJG2534223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d354f143a7d741d15fcdb54c32b3c40ea33fe15ea74bd7aa58e7af8b7ca3580. 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/TCAJG2534226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a59fe9e345782b5fd9828e5007b13f92cefaff3d9290da608624350411e8c14. 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/TCAJG2534232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75a474163e97bca4677a46bb5afe20bddc328b9e1cfd7d33e324489d429269a. 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/TCAJG2534238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91208960722ad5fe51a13e84a34d7c9a49daf0379c19387118c1afcc747d796f. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCAJG2534243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d26f48dba35dc63012a7264578a89e70f27087eb1937f58ed99aeb4b83a73c1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAJH2534248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61055a5e70e0e41110fbd8d1c3ec033de50c54497f6a88ae72985ce899e5bd0f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJG2534253.